Fuel Pump Service - ACDelco TechConnect
Fuel Pump Service - ACDelco TechConnect
Fuel Pump Service - ACDelco TechConnect
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May/June2009 Volume 16, No. 3 (TS-PU-0008-09)<br />
<strong>Fuel</strong> <strong>Pump</strong> <strong>Service</strong><br />
Ever since it was discovered during WWI that<br />
adding tetraethyl lead to gasoline significantly<br />
increased its octane rating (typical mid-1920s<br />
gasolines had a 40–60 octane rating), more<br />
and more additives have been added to gasoline<br />
during the refining process to improve the<br />
fuel’s performance, emissions and economy.<br />
Common additives in gasoline today include:<br />
detergents, corrosion inhibitors, anti-icers, de -<br />
mulsifiers (to break up water particles), deposit<br />
controls (to prevent carbon buildup), antioxidants<br />
(to prevent gum formation) and metal deactivators<br />
(to inhibit oxidation and gum formation catalyzed by<br />
certain metals, especially copper).<br />
<strong>Fuel</strong> changes to meet tighter emission standards have<br />
lead to the use of oxygenated fuels such as ethanol,<br />
methanol, ETBE and MTBE. In the past, alcohols and<br />
ethers were used primarily as octane enhancers. Now,<br />
the focus is on emissions reduction. Gasoline additives are<br />
regulated to ensure that the finished fuel will not contribute<br />
to fuel system failure. Additive breakdown or excessive<br />
amounts of additives in gasoline can result in fuel system<br />
contamination and lead to pump failure. In fact, fuel contamination is the main cause<br />
of electric fuel pump failure by clogging the pickup strainer or inlet filter as well as<br />
causing internal pump damage.<br />
Diagnosis<br />
During fuel pump diagnosis, keep in mind these key items:<br />
Start with the basics<br />
– Is fuel pressure within specifications? (check the <strong>Service</strong> Information)<br />
– Does the fuel pressure hold with the key off? (if applicable)<br />
– On return systems with a vacuum operated regulator, does the fuel pressure<br />
increase during acceleration?<br />
– Has the in-line fuel filter been changed? (if applicable)<br />
Measure amperage<br />
– If amperage is low, it may be due to bad connections<br />
– If amperage is high, check for possible restrictions or a bad fuel pump<br />
If a burned, loose terminal is connected to a new fuel pump connector, the new<br />
fuel pump will be ruined<br />
Use the illustrated pigtail search feature on www.acdelcotechconnect.com when<br />
replacing a fuel pump connector<br />
Low fuel level in the fuel tank can shorten fuel pump life. Inform the customer<br />
that fuel level affects the life of the fuel pump (gasoline is used for both cooling<br />
and lubrication), and fuel with an octane rating specified in the vehicle owner<br />
manual should be used.<br />
1<br />
continued on page 2<br />
IN THIS ISSUE<br />
<strong>Fuel</strong> <strong>Pump</strong> <strong>Service</strong> . . . . . . . . . . . . . . . . . . . .1<br />
Cool Technology Covered<br />
in Latest A/C Seminar . . . . . . . . . . . . . . . . . .3<br />
A/C Compressor <strong>Service</strong> Tips . . . . . . . . . . .3<br />
Overlooked Maintenance Items:<br />
Wipers and More . . . . . . . . . . . . . . . . . . . . .4<br />
Improper Use of Conductance Testing<br />
on New Batteries . . . . . . . . . . . . . . . . . . . . .4<br />
Labor Times Now Available on WIP . . . . .5<br />
Expanded Wiring Sockets<br />
and Pigtails Search Tool . . . . . . . . . . . . . . .5<br />
GM New Vehicle Supplier Discount . . . . .6<br />
TSS Q&A . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6<br />
Tech Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7<br />
Training Update . . . . . . . . . . . . . . . . . . . . . . .8<br />
Readers Show Off Their Rides . . . . . . . . . .8<br />
ON THE WEB<br />
– www.acdelcotechconnect.com, click on<br />
the <strong>TechConnect</strong> Magazine link, or<br />
– Log on to the <strong>ACDelco</strong> LMS, click on the<br />
Resources link
<strong>Fuel</strong> <strong>Pump</strong> <strong>Service</strong> –<br />
continued from page 1<br />
Check for fuel contamination. It’s<br />
the number one reason for fuel<br />
pump failure. Dirty fuel, additive<br />
breakdown, rust and fuel tank<br />
delamination all work to<br />
clog the fuel pump strainer and<br />
cause premature pump failure.<br />
<strong>Pump</strong> Replacement<br />
When proper diagnosis leads to the<br />
need to replace the fuel pump, be sure<br />
to follow these guidelines:<br />
Check for contamination<br />
and flush the fuel tank<br />
– Clean the top of the<br />
fuel tank before re -<br />
moving the fuel pump<br />
– Use hot water<br />
– Install a new in-line<br />
filter and sock filter<br />
Always install a new<br />
strainer (never re-use)<br />
Replace the fuel tank<br />
O-ring when installing a<br />
new fuel pump<br />
Always follow the directions<br />
provided with the<br />
new fuel pump<br />
Inform the customer about not<br />
using fuel additives, except for<br />
manufacturer-recommended products,<br />
such as <strong>ACDelco</strong> <strong>Fuel</strong> System<br />
Treatment Plus. Remember that any<br />
additive that is put into the fuel<br />
tank, such as to clean the fuel<br />
injectors, must first go through the<br />
fuel pump.<br />
Corrosion and Contamination<br />
The sulfur contaminants found in<br />
some of today’s gasoline can have<br />
corrosive effects on the fuel system<br />
sending unit, disrupting electrical<br />
continuity and leading to erratic or<br />
false fuel gauge readings.<br />
<strong>ACDelco</strong> <strong>Fuel</strong> System Treatment Plus<br />
— 20 ounce bottle part number 10-3003<br />
(88861013); 12 ounce bottle part number<br />
10-3004 (88861262) — has a filmer<br />
additive that, when used regularly, helps<br />
protect the sending unit by cleaning<br />
sulfur corrosion and coating the metallic<br />
surfaces of the fuel system. It’s recommended<br />
to use <strong>ACDelco</strong> <strong>Fuel</strong> System<br />
Treatment Plus at each oil change.<br />
Hybrid Technology<br />
<strong>ACDelco</strong>’s Hybrid Modular Reservoir<br />
Assembly (MRA) features new<br />
technology that is designed to increase<br />
fuel pump performance and durability.<br />
During service, technicians will notice<br />
some differences between the MRA and<br />
the fuel pump being replaced.<br />
All hybrid MRAs have the latest fuel<br />
level sensor technology to reduce failures<br />
due to worn fingers on the sensor<br />
wiper arm, sulfur contamination, wire<br />
wound sensors and lead sensor kits.<br />
The hybrid MRA also has an enhanced<br />
electrical connection to help eliminate<br />
above- and<br />
below-cover<br />
burning due to<br />
vehicle vibration.<br />
The connector is<br />
upgraded from a<br />
MetriPack 150 to<br />
GT280.<br />
Hybrid MRA enhancements:<br />
A. GT280 connector<br />
B. Gerotor pump<br />
C. Ceramic card sensor<br />
The MRAs<br />
have an improved<br />
pump design to<br />
increase pump<br />
life and reduce<br />
pump noise. The<br />
pump is changed<br />
from a roller vane<br />
design to a gerotor<br />
design.<br />
<strong>Fuel</strong> <strong>Pump</strong> Control Module<br />
With electronic returnless fuel<br />
systems, the <strong>Fuel</strong> <strong>Pump</strong> Control Module<br />
(FPCM) controls the voltage supplied<br />
to the fuel pump (located within the<br />
fuel tank) to achieve the desired fuel<br />
pressure requested by the Engine<br />
Control Module (ECM). There is also a<br />
fuel line pressure sensor, which sends a<br />
feedback signal to the FPCM, so the<br />
FPCM can determine whether the<br />
desired pressure is being achieved.<br />
Examples of vehicles first equipped with<br />
the new FPCM include 2008 full-size<br />
Chevy and GMC pickups.<br />
DTCs stored in the FPCM may be<br />
due to issues with the electrical wiring<br />
or connectors in the FPCM circuit; or<br />
due to performance issues within the<br />
FPCM module, the fuel line pressure<br />
sensor, fuel pump MRA, or communications<br />
with the ECM.<br />
Using a scan tool to check the FPCM<br />
for DTCs could lead to more accurate<br />
diagnosis of a condition, faster determination<br />
of root cause, and shorter vehicle<br />
repair times.<br />
– Thanks to Mike Militello, Alan Lustre<br />
and George Nagrant<br />
2<br />
<strong>ACDelco</strong> <strong>TechConnect</strong> is published bi-monthly<br />
and online for technicians of Total <strong>Service</strong><br />
Support (TSS) and Key Fleet accounts to<br />
provide timely service information, increase<br />
knowledge and improve the performance of<br />
the service center.<br />
Publisher:<br />
Mike DeSander<br />
<strong>ACDelco</strong><br />
E-mail /<br />
mike.desander@gm.com<br />
Editor:<br />
Mike Militello<br />
<strong>ACDelco</strong><br />
E-mail /<br />
michael.militello@gm.com<br />
Technical Editors:<br />
Mark Spencer<br />
E-mail /<br />
mspencer@gpworldwide.com<br />
Jim Horner<br />
E-mail /<br />
jhorner@gpworldwide.com<br />
Production Manager:<br />
Marie Meredith<br />
Desktop Publishing:<br />
5by5 Design<br />
E-mail /<br />
dkelly@5by5dzign.com<br />
Write to: *<br />
<strong>ACDelco</strong> <strong>TechConnect</strong><br />
P.O. Box 500<br />
Troy, MI 48007-0500<br />
On the Web::<br />
To read and search recent issues of<br />
<strong>TechConnect</strong> online:<br />
– www.acdelcotechconnect.com,<br />
click on the <strong>TechConnect</strong> Magazine<br />
link, or<br />
– Log on to the <strong>ACDelco</strong> LMS, click<br />
on the Resources link<br />
<strong>ACDelco</strong> service tips are intended for use by<br />
professional technicians, not a “do-it-yourselfer.”<br />
They are written to inform those technicians of conditions<br />
that may occur on some vehicles, or to provide<br />
information that could assist in the proper service<br />
of a vehicle. Properly trained technicians have<br />
the equipment, tools, safety instructions and knowhow<br />
to do a job properly and safely. If a condition is<br />
described, it cannot be assumed that the information<br />
applies to all vehicles or that all vehicles will<br />
have that condition.<br />
All materials and programs described in this<br />
magazine are subject to change. Submission of<br />
materials implies the right to edit and publish.<br />
Inclusion in the publication is not necessarily an<br />
endorsement of the individual or the company.<br />
<strong>TechConnect</strong> is published for <strong>ACDelco</strong> by Sandy<br />
Corporation, Troy, MI.<br />
©2009 <strong>ACDelco</strong>. All rights reserved.
Cool Technology Covered<br />
in Latest A/C Seminar<br />
<strong>ACDelco</strong>’s updated air conditioning<br />
system seminar, Emerging<br />
A/C Technology and <strong>Service</strong><br />
(S-AC07-03.01SEM), provides an<br />
overview of the latest issues<br />
affecting current and future A/C<br />
system service.<br />
A/C systems have changed<br />
dramatically over the past years,<br />
becoming smaller, increasingly<br />
efficient and more complex.<br />
Refrigerant capacity, for example,<br />
has dropped from nearly four<br />
pounds of refrigerant in older R-12<br />
systems to 16 ounces or less on<br />
newer R-134a systems. A very<br />
small leak can significantly reduce<br />
performance or cause noise in a<br />
modern A/C system.<br />
In the seminar, technicians will<br />
learn about:<br />
Various A/C systems and their<br />
operation and service<br />
Scan tools, <strong>Service</strong><br />
Programming and CAN data<br />
and how they involve A/C<br />
diagnostics and repair<br />
Various service items such as oil<br />
balancing, flushing, filters, line<br />
repair, dyes and leak detection<br />
Various sealants and their affect<br />
on the A/C system<br />
New SAE regulations for leak<br />
detection, refrigerant purity and<br />
R/R/R machines<br />
Clutchless and high voltage<br />
hybrid compressors<br />
Possible future refrigerants and<br />
their systems, such as R-152a,<br />
R744 (CO2) and HFO-1234YF<br />
Virtual Networks<br />
Vehicle networks and programming<br />
have grown to control a<br />
variety of A/C system operation,<br />
taking information sharing of the<br />
climate control system as well as<br />
other vehicle systems to a higher<br />
level of communication. In the<br />
seminar, the use of a virtual<br />
network in modern vehicle communication<br />
systems is covered.<br />
A virtual network is supported by<br />
virtual devices, which represents a<br />
collection of signals owned by a<br />
single physical device (control<br />
module). A virtual network is triggered<br />
by activated switches, such<br />
as an A/C request or a change in a<br />
sensor. The benefit of a virtual<br />
network is a reduction in power<br />
consumption because control<br />
modules are only powered when a<br />
provided functionality is required.<br />
Virtual network of an A/C system<br />
New Regulations<br />
The seminar also covers a<br />
number of emerging topics that<br />
are making news in the A/C<br />
industry. This includes the following<br />
new SAE regulations:<br />
J2788 Standards for<br />
Recovery/Recycle/Recharge<br />
machines<br />
J2810 Standards for recovery<br />
only machines<br />
J2670 A/C Additives<br />
J2791 Enhanced Leak Detection<br />
J2776 Purity Standards for<br />
R134a<br />
A/C refrigerants discussed in<br />
the seminar include several new<br />
refrigerants that are potential<br />
replacements for R-134a. R-134a<br />
has a Global Warming Potential<br />
(GWP) of 1410. Worldwide efforts<br />
to reduce greenhouse gases have<br />
led to an agreement that any<br />
replacement refrigerant must have<br />
a GWP of 150 or less. Currently,<br />
the EPA does not identify any<br />
replacement refrigerant for R-134a<br />
systems and has not evaluated any<br />
alternative refrigerants.<br />
Learn More<br />
For more information about<br />
<strong>ACDelco</strong> training courses on A/C<br />
systems and other systems and<br />
components available at training<br />
centers and online, go to<br />
www.acdelcotechconnect.com<br />
and click on the Training tab.<br />
Contact your local <strong>ACDelco</strong><br />
distributor to learn when the<br />
Emerging A/C Technology and<br />
<strong>Service</strong> seminar and other seminars<br />
will be held in your area.<br />
– Thanks to Mike Militello<br />
3<br />
A/C Compressor<br />
<strong>Service</strong> Tips<br />
<strong>ACDelco</strong> studies have shown replacement air<br />
conditioning compressors fail four times more<br />
often than original compressors because of a failure<br />
to properly restore the system. <strong>ACDelco</strong> has<br />
disassembled, reviewed, and analyzed hundreds<br />
of air conditioning compressors returned under<br />
warranty. The failure of these compressors can<br />
be grouped into three major categories:<br />
Lubrication<br />
Refrigerant<br />
Debris<br />
When repairing A/C conditions, performing the<br />
necessary service to protect replaced parts is<br />
important to avoid replacement failures and<br />
comebacks. Prior to and after compressor failure,<br />
debris particles from a failure flow throughout<br />
the refrigerant system in both directions. These<br />
particles imbed themselves in various internal<br />
components and cannot be completely flushed<br />
from the system.<br />
The most cost-effective service method for<br />
protecting the compressor and other new<br />
components is to install a suction screen ahead<br />
of the compressor and an in-line filter ahead of<br />
the control valves. These protection devices have<br />
virtually no effect on overall A/C system performance<br />
but they greatly improve the protection of<br />
a compressor from any residual failure debris.<br />
A quick visual inspection<br />
may prevent needless<br />
compressor replacement<br />
caused by other conditions,<br />
such as a low charge,<br />
Diagnostic Trouble Codes<br />
(DTC), electrical connections,<br />
or loose fasteners.<br />
Check for proper charge<br />
levels and purity as well<br />
as confirmation of clutch<br />
Fragment<br />
contamination<br />
engagement. Compressors with a low charge<br />
make noise. A proper charge may silence a noisy<br />
compressor.<br />
Job Aids Online<br />
For more information about A/C compressor<br />
installation, a printable .pdf file is available<br />
on <strong>TechConnect</strong> Magazine Online. Go to<br />
www.acdelcotechconnect.com and click on the<br />
<strong>TechConnect</strong> Magazine tab. The A/C compressor<br />
job aid and several other job aids are available<br />
under the Troubleshooting PDF Job Aids link<br />
in the Resources section on the right side of<br />
the page.<br />
The job aid includes a number of tips to follow<br />
when installing an A/C compressor. The job aid<br />
also provides a list of related components that<br />
should be inspected when troubleshooting the<br />
A/C system. The operation of many of these<br />
components will affect the performance of the<br />
compressor. Finally, there are several tips to<br />
verify proper installation and operation to help<br />
ensure customer satisfaction.
Overlooked Maintenance Items: Wipers and More<br />
More than 80 percent of the vehicles<br />
that have been inspected at community<br />
car care events across the country over<br />
the past year were in need of service<br />
or parts, reports the Car Care Council.<br />
This reinforces the need for consumer<br />
education about the benefits of regular<br />
vehicle care and maintenance, especially<br />
as the number of years owners keep<br />
their vehicles continues to increase.<br />
Top problem areas typically found<br />
include the need for oil changes, windshield<br />
wipers, air filters, and improperly<br />
inflated or worn tires.<br />
Forgotten Wipers<br />
Wipers appear to be one of those<br />
items that drivers forget about when<br />
they are not in use. However, once the<br />
rain starts to fall, the need to replace<br />
worn wipers becomes evident rather<br />
quickly, and good visibility has a major<br />
impact on driver safety.<br />
The replacement interval of wipers is<br />
based on several factors, including<br />
operating conditions (winter conditions<br />
are tough on wiper blades, yet wiper<br />
blades can deteriorate faster and need<br />
more frequent replacement in sunsoaked<br />
desert states), frequency of use,<br />
and the material and type of wipers.<br />
Wiper blades should be inspected<br />
A new battery does not develop its<br />
full performance capabilities until it has<br />
been through several discharge/charge<br />
cycles. This means a new battery may<br />
not be capable of producing its optimum<br />
current and cold cranking amps (CCA).<br />
If a new battery that has not gone<br />
through a cycling period is tested using<br />
a conductance-type battery tester,<br />
the resulting CCA may be lower than<br />
indicated on the battery’s rating label.<br />
This could lead to condemning an<br />
otherwise good battery.<br />
Conductance is a measurement of a<br />
battery’s current producing capability.<br />
Conductance testers can accurately<br />
identify batteries that have reduced<br />
performance after being in service, but<br />
should never be used to determine the<br />
state of health, state of charge or CCA<br />
rating of a new, never installed battery.<br />
Also, conductance testing of new<br />
batteries should never be used to<br />
determine the warrantable condition.<br />
every six months. Streaking or chattering<br />
blades as well as worn or split<br />
rubber are signs that it’s time to replace<br />
the wiper blades.<br />
<strong>ACDelco</strong> wiper products feature:<br />
– Beam wiper blades — the latest in<br />
wiper technology<br />
– Performance blades that feature<br />
pre-installed adapters that match<br />
a vehicle’s arm type for quick<br />
installation<br />
– Aerodynamic designs that help<br />
prevent windlift<br />
– Broad range of sizes and types of<br />
blades, including low profile and<br />
hard-to-find applications<br />
– Materials and finishes (polymer or<br />
carbon steel) that are designed to<br />
resist rusting, chipping and bending<br />
– Coatings on rubber parts that help<br />
reduce streaking, friction and noise<br />
– Virtually all-makes and all-models<br />
coverage<br />
Maintenance Recommendations<br />
To help ensure the reliability and<br />
safety of a vehicle, as well as to extend<br />
vehicle life, the Car Care Council<br />
suggests these preventive maintenance<br />
To check<br />
the condition<br />
of a battery<br />
prior to installation<br />
to be<br />
sure there<br />
is adequate<br />
voltage to<br />
start the vehicle,<br />
measure<br />
open circuit<br />
voltage (OCV)<br />
using a digital<br />
voltmeter<br />
(DVOM).<br />
An OCV of<br />
12.24V is<br />
adequate<br />
to provide<br />
the power<br />
requirements<br />
for starting most vehicles under most<br />
conditions. The battery should be in<br />
service for several days before performing<br />
a conductance test.<br />
4<br />
steps — many of which are put off<br />
or overlooked by drivers — be recommended<br />
to service customers. Checking<br />
these items is especially timely after a<br />
harsh winter’s worth of driving:<br />
– Change the oil and filter regularly<br />
according to the owner’s manual<br />
maintenance schedule.<br />
– Inspect the tires for proper wear<br />
and check the tire pressure at least<br />
monthly, including the spare.<br />
– Have the alignment checked at<br />
least annually. Potholes and other<br />
road conditions can take their toll<br />
on a vehicle’s steering and suspension.<br />
– Check the hoses and belts — which<br />
are critical to the proper functioning<br />
of the electrical system, air conditioning,<br />
power steering and the<br />
cooling system — for cracks,<br />
brittleness or other signs of<br />
excessive wear.<br />
– Inspect the windshield wipers and<br />
lights on the vehicle.<br />
All of these components are<br />
often neglected wear items that are<br />
needed for safe and reliable vehicle<br />
performance.<br />
– Thanks to Chris Vermette<br />
Improper Use of Conductance Testing on<br />
New Batteries<br />
Don’t use a<br />
conductance tester to<br />
measure the performance<br />
of a new battery.<br />
Battery Testing Procedures<br />
Follow these tips when using a<br />
conductance tester to ensure accurate<br />
test results. Using non-approved<br />
adapters or improper test procedures<br />
can lead to failing test results for<br />
batteries that are not defective.<br />
Be sure the battery in the tester is<br />
good or you may get inaccurate results.<br />
To check the conductance tester, be<br />
sure OCV on the tester matches the<br />
OCV measured with a known-good<br />
DVOM (may vary slightly due to<br />
different internal resistance).<br />
Be sure to get good connections<br />
between the battery terminals and the<br />
tester clamps. Each tester clamp has<br />
two jaws. Each jaw is wired to a different<br />
part of the tester, and it is essential<br />
that both jaws make good contact.<br />
If the connections to the battery<br />
terminals in the vehicle are in doubt or<br />
continued on page 5
Labor Times Now Available on WIP<br />
Why use two sources to check<br />
mechanical labor times and parts<br />
pricing and availability? <strong>ACDelco</strong>’s<br />
WISE Internet Parts (WIP) now offers<br />
users the ability to do both in one<br />
application, at no additional charge.<br />
WIP, <strong>ACDelco</strong>’s Web-based parts<br />
catalog application, provides fast<br />
parts inventory access and compre -<br />
hensive parts ordering. <strong>ACDelco</strong><br />
WIP subscribers can check inventory<br />
and order parts online anytime from<br />
WISE-enabled <strong>ACDelco</strong> Warehouse<br />
Distributors. Now, labor times also<br />
are only one click away. Using the<br />
labor time feature will help subscribing<br />
service centers to quickly create<br />
parts and labor estimates. This new<br />
feature does not apply to TurboPart<br />
WIP users.<br />
Parts and labor or labor only can be displayed in WIP.<br />
the tester displays REPLACE BATTERY or BAD CELL -<br />
REPLACE, disconnect the battery being tested from the<br />
vehicle. Retest the battery with both of the vehicle’s battery<br />
cables disconnected from the battery.<br />
When using an adapter, be sure the adapter makes good<br />
contact with the lead terminal surface on the battery.<br />
Never use steel bolts, nuts, washers, etc., when testing<br />
a side terminal battery. Only use the adaptors included with<br />
the conductance tester. The coating on other adapters may<br />
affect the tester’s accuracy.<br />
Battery Warranty<br />
<strong>ACDelco</strong> batteries are covered by a comprehensive<br />
warranty program. Any independent service center can accept<br />
an <strong>ACDelco</strong> battery that is under warranty and not functioning<br />
properly from a customer for return, even if the battery was<br />
purchased from another retailer or service center. <strong>ACDelco</strong><br />
will warrant the battery, and in the process, the service<br />
center may earn some additional service business and<br />
customer loyalty.<br />
– Thanks to Mike DeSander and Brad Busboom<br />
To display labor times, users will<br />
identify and search for parts as<br />
they have in WIP previously. Build<br />
the vehicle for which the parts are<br />
needed by selecting the year, make,<br />
model and engine, or enter the VIN.<br />
Next, select the parts group and<br />
subgroup.<br />
Once users have identified the vehicle<br />
and parts they are interested in, click on<br />
the Display Parts & Labor button or the<br />
Display Labor Only button. Labor times<br />
for the selected parts will be displayed<br />
below the parts information.<br />
The labor multiplier value used<br />
to calculate the labor times also can<br />
be changed. Click the Edit Labor<br />
Multiplier button to increase or<br />
decrease the multiplier.<br />
5<br />
The addition of listing labor times<br />
in WIP is just one of many benefits.<br />
WIP also provides:<br />
– The ability to place parts orders<br />
anytime 24/7 with local warehouse<br />
distributors<br />
– A direct link to local warehouse<br />
distributors using your PC and<br />
Internet connection, no additional<br />
hardware or software is required<br />
– Access to the inventory of local<br />
warehouse distributors to check<br />
parts pricing and availability<br />
To learn more about WIP, visit<br />
www.acdelcotechconnect.com, call<br />
1-800-825-5886, prompt #3, or contact<br />
your local <strong>ACDelco</strong> representative.<br />
– Thanks to Bob Stewart<br />
Labor times for parts searched in WIP.<br />
Expanded Wiring<br />
Sockets and Pigtails<br />
Search Tool<br />
The wiring sockets and pigtails search tool on<br />
www.acdelcotechconnect.com has been expanded.<br />
This on-line reference source offers a menudriven<br />
search feature that can narrow the search according<br />
to brand, number of cavities and gender. With<br />
photos of each pigtail and wiring socket, you also can<br />
visually match the part you are replacing with the new<br />
part number. All of which makes it easier to identify<br />
wiring sockets and pigtails for GM and non-GM vehicles.<br />
To access the wiring sockets and pigtails search tool,<br />
go to www.acdelcotechconnect.com and click on the<br />
Automotive Systems tab and the Product Information<br />
link.<br />
– Thanks to Bob Stewart
GM New Vehicle<br />
Supplier Discount<br />
plus Other Incentives<br />
Add Up<br />
There are several money-saving regional consumer<br />
incentives available right now on most 2009 GM cars and<br />
trucks. TSS service center owners and employees who add<br />
those to the thousands in savings available through the GM<br />
New Vehicle Supplier Discount will find that the amount of<br />
money off really adds up.<br />
The GM supplier discount is available on most new 2009<br />
GM vehicles at participating GM dealerships. Vehicles may<br />
be taken from dealer stock or ordered. (Eligibility may change<br />
at any time without notice and some models may have<br />
limited availability). All that’s needed to get your supplier<br />
discount savings is a GM New Vehicle Supplier Discount<br />
authorization number.<br />
To get your authorization number, follow these steps:<br />
– Go to www.acdelcotechconnect.com<br />
– Click on the Total <strong>Service</strong> Support tab, and then the<br />
<strong>ACDelco</strong> TSS GM Vehicle Supplier Discount button on<br />
the right side of the page. (You will have to log in by<br />
entering your 6-digit TSS code [it begins with a 6] and<br />
your zip code.)<br />
– On the GM Vehicle Supplier Discount page, scroll down<br />
to the bottom of the page and click on the link<br />
www.gmsupplierdiscount.com to access the GM supplier<br />
discount website. Always access the GM supplier discount<br />
website through www.acdelcotechconnect.com.<br />
This loads the website with the correct company code<br />
for TSS service centers.<br />
– If you have used this website before, input your user<br />
name and password that you have used in the past. If you<br />
do not have a user name and password, click on New to<br />
Supplier Discount to register on the site.<br />
– Click “yes” when you are asked, “Are you a TSS/<strong>ACDelco</strong><br />
account?” This question will only appear if you have<br />
logged in using a previous user name and password.<br />
– If you are asked if you would like to use this new account<br />
number because it has changed, always respond “yes.”<br />
This is part of a recent change to improve the process.<br />
– Begin by selecting GM Supplier Discount on the top left<br />
side of the page. Next, click on Obtain Authorization to<br />
generate your GM Discount Certificate. You will be asked<br />
for your birth date, zip code, and other vehicle purchase<br />
information. Click on Step 2 and Step 3 after verifying the<br />
information.<br />
– You can print out the certificate number, write it down, or<br />
email it to a recipient. It’s that easy!<br />
For additional information about the GM supplier discount<br />
or if you have questions about the authorization number<br />
process, call 1-800-960-3375. When calling, please state<br />
that your company name is TSS/<strong>ACDelco</strong>, not your individual<br />
service center name.<br />
– Thanks to Staci Shelton<br />
6<br />
The TSS Q&A provides answers<br />
to common questions received<br />
by the <strong>ACDelco</strong> Customer<br />
Support Center.<br />
Q: How does the web-based <strong>ACDelco</strong> TSS<br />
Customer Satisfaction Index (CSI) Program<br />
track customer satisfaction?<br />
A: The new TSS CSI Program provides for<br />
immediate feedback from service customers.<br />
The system features hang tags with the service<br />
center’s <strong>ACDelco</strong> TSS account number that are<br />
given to customers after service has been<br />
performed. Customers can go online to<br />
http://survey.acdelcocrs.com, enter the TSS<br />
account number on the tag, and provide their<br />
comments about their service experience.<br />
Q: How is the customer information delivered to<br />
service centers?<br />
A: The data is compiled<br />
for the service center.<br />
All the service center<br />
has to do is hang the<br />
tag on a customer’s<br />
rearview mirror when<br />
service is finished.<br />
Once a customer<br />
answers the online<br />
survey, a link to where<br />
the survey results can<br />
be accessed is sent via<br />
e-mail to the service<br />
center. The service<br />
satisfaction comments<br />
and CSI scores are avail-<br />
Customers fill out the<br />
CSI survey online.<br />
able immediately, providing instant feedback.<br />
For more information about the TSS CSI Program,<br />
go to www.acdelcotechconnect.com, select the<br />
Total <strong>Service</strong> Support tab, and then click on the<br />
Marketplace link. After logging in with your sixdigit<br />
TSS account number and zip code, scroll<br />
down and select the Customer Satisfaction Index<br />
Program. You also can call 1-800-825-5886,<br />
prompt 4, for more program details.<br />
If you have any questions about the TSS program<br />
or any current <strong>ACDelco</strong> activities, contact the<br />
Customer Support Center at 1-800-825-5886,<br />
prompt 0.<br />
Correction<br />
In the last issue of <strong>TechConnect</strong>, an article about<br />
counterfeit tools stated that authentic CANdi modules<br />
have aluminum terminals. It should have stated that<br />
authentic CANdi module terminals may be either nickel<br />
or gold.
The following technical tips provide repair information about specific conditions on a variety of vehicles. If you have a tough or unusual<br />
service repair, the TSS Technical Assistance Hot Line can help. Call 1-800-825-5886, prompt #2, to speak with a technical<br />
expert with the latest OEM information.<br />
Intermittent Vehicle No<br />
Crank/Dead Battery<br />
2004 Buick Rainier; 2000-2004<br />
Cadillac Escalade, 2002-2004 Cadillac<br />
Escalade EXT, 2003-2004 Cadillac<br />
Escalade ESV; 1998-2004 Chevrolet<br />
Blazer and S-10 Pickup, 1999-2004<br />
Chevrolet Silverado, 2000-2004<br />
Chevrolet Suburban and Tahoe,<br />
2002-2004 Chevrolet Avalanche,<br />
2002-2004 Chevrolet TrailBlazer and<br />
TrailBlazer EXT, 2003-2004 Chevrolet<br />
Express; 1998-2004 GMC Jimmy and<br />
Sonoma, 1999-2004 GMC Sierra,<br />
2000-2004 GMC Yukon and Yukon XL,<br />
2002-2004 GMC Envoy and Envoy XL,<br />
2003-2004 GMC Savana, 2004 GMC<br />
Envoy XUV; 1998-2004 Oldsmobile<br />
Bravada; 2003-2004 HUMMER H2<br />
When diagnosing an intermittent<br />
vehicle no crank or dead battery<br />
condition, remove and reinstall the<br />
ignition switch following the appropriate<br />
procedure in the <strong>Service</strong> Information.<br />
The ignition switch may have been<br />
misindexed in the steering column<br />
during a previous replacement.<br />
If the ignition switch is misindexed<br />
in one direction, the ignition switch<br />
circuits will not be completely open<br />
when the ignition switch is in the Off<br />
position with the key removed. This may<br />
result in the lights remaining on and will<br />
drain the battery.<br />
If the ignition switch is misindexed<br />
in the opposite direction, the ignition<br />
circuits will open correctly, but the<br />
ignition switch may not close the crank<br />
circuit properly when the ignition key is<br />
turned to the crank position. This will<br />
result in a no crank condition.<br />
Refer to GM bulletin 04-06-03-002 for<br />
more information.<br />
Low Voltage Display<br />
1998-2008 GM Passenger Cars<br />
and Light Duty Trucks, including Saturn;<br />
2003-2008 HUMMER H2, H3;<br />
2005-2008 Saab 9-7X<br />
These vehicles may have a low<br />
voltage display, lights that dim at stop<br />
lights, slow cranking, no start, low<br />
generator output at idle or dim lights at<br />
idle when electrical loads are heavy at<br />
idle or under slow driving or infrequent<br />
usage conditions. These characteristics<br />
Low voltage display<br />
may be more noticeable with customeradded<br />
electrical accessories or with a<br />
discharged battery.<br />
These are normal operating char -<br />
acteristics of a vehicle electrical system<br />
unless a proven fault has been<br />
diagnosed.<br />
Non-usage of the vehicle for<br />
ex tended periods of time and extended<br />
periods of engine idling with high<br />
electrical loads are two factors that<br />
may affect generator and battery performance.<br />
For complete diagnosis of the<br />
battery and/or generator, refer to the<br />
appropriate <strong>Service</strong> Information.<br />
Refer to GM bulletin 05-06-03-002B<br />
for more information.<br />
Starter Motor Continues to<br />
Run or Crank<br />
1995 Buick Riveria; 1995 Cadillac<br />
Eldorado, Eldorado Touring Coupe,<br />
Seville; 1995 Chevrolet Camaro; 1995<br />
Oldsmobile Aurora; 1995 Pontiac<br />
Firebird – with 3800, 4.0L, 4.6L, 5.7L<br />
engines (RPOs L47, L36, LT1, LD8, L67,<br />
L37); 1994-95 Chevrolet and GMC Truck<br />
C/K, G, P models – with 5.7L, 7.4L<br />
engines (RPOs L05, L19)<br />
The starter motor may continue to<br />
run or crank after the vehicle is started<br />
or turned off. The starter motor solenoid<br />
will not disengage because of a ground<br />
to the #6 circuit. With the #6 circuit<br />
ground to a resistive ground, current is<br />
fed back through the windings to the<br />
ground, holding in the plunger and<br />
causing the starter to continue to run.<br />
7<br />
Disconnect the #6 circuit lead at the<br />
starter “S” terminal. With the ignition<br />
Off or in Run, use an Ohm meter to<br />
check for any electrical path between<br />
the ring terminal on the #6 circuit lead<br />
and ground.<br />
If found, eliminate the grounding<br />
condition. Reroute any wires as<br />
necessary.<br />
Alternator Bolt Tightening<br />
2001-2004 Honda Civic<br />
Conditions such as an engine<br />
crank/no start, MIL on, immobilizer<br />
blinking, or no communication with the<br />
ECM/PCM may be caused by loose<br />
alternator bolts. If these bolts are loose<br />
for any reason, the alternator can<br />
overcharge and damage the ECM/PCM.<br />
Beginning in 2001, the Civic has a<br />
different style alternator bracket that<br />
makes the bolt tightening sequence and<br />
bolt torque critical. Improper tightening<br />
will cause noise.<br />
Refer to the appropriate <strong>Service</strong><br />
Information for the proper bolt tightening<br />
sequence and bolt torque specifications.<br />
A belt tension gauge special tool<br />
also is required.<br />
After tightening the alternator bolts,<br />
restart the engine. If it won’t start,<br />
check the ECM/PCM connector for<br />
battery voltage and ground. If there is<br />
battery voltage and ground at the<br />
connector, replace the ECM/PCM.<br />
Diagnostic Assistance<br />
For free technical diagnostic<br />
assistance and product information<br />
regarding specific <strong>ACDelco</strong> products,<br />
contact these toll-free information<br />
hotlines staffed by ASE-certified<br />
technicians:<br />
Brakes – 1-888-701-6169 (prompt #1)<br />
Chassis – 1-888-701-6169 (prompt #2)<br />
Clutches – 1-888-725-8625<br />
Lift Supports – 1-800-790-5438<br />
Shocks – 1-877-466-7752<br />
Starters and Alternators –<br />
1-800-228-9672<br />
Steering – 1-866-833-5567<br />
Wiper Blades – 1-800-810-7096
Current Instructor-Led<br />
Training<br />
<strong>ACDelco</strong>’s Instructor-Led Training<br />
(ILT) courses provide hands-on<br />
instruction on the latest automotive<br />
systems. The following ILT<br />
courses are currently being held<br />
at training center locations around<br />
the country.<br />
How to Take<br />
<strong>ACDelco</strong> Training<br />
To log on to the <strong>ACDelco</strong> Learning<br />
Management System go to<br />
www.acdelcotechconnect.com<br />
and click on the Training tab.<br />
To enroll in an Instructor-Led<br />
Training (ILT) course, click on<br />
the Enrollment link or the<br />
Instructor-Led Courses link.<br />
To launch a Web-Based Training<br />
(WBT) course, click on the<br />
Web-Based Courses link to<br />
view the catalog and select a<br />
specific course.<br />
To launch a TechAssist (TAS)<br />
course, click on the TechAssists<br />
link to view the catalog and<br />
select a specific course.<br />
To launch a Simulation (SIM),<br />
click on the Simulations link to<br />
view the catalog and select a<br />
diagnostic challenge simulation.<br />
TS-PU-0008-09<br />
Course Number Course Name<br />
S-AC07-02.01ILT Automotive Air Conditioning: Advanced Refrigerant System Diagnostics<br />
S-AC07-03.01ILT HVAC Control System Operation and Diagnostics<br />
S-AC07-06.01ILT Toyota HVAC<br />
S-AC07-07.01ILT Chrysler HVAC<br />
S-BK05-01.01ILT Braking Systems<br />
S-EL06-04.01ILT Body Control Systems Diagnostics<br />
S-EL06-10.01ILT Battery, Charging, & Starting<br />
S-EL06-11.01ILT Automotive Electrical Circuit Diagnosis and Repair<br />
S-EL06-12.01ILT Hybrid Technology and <strong>Service</strong><br />
S-EP08-02.01ILT Engine Performance: Computer Controls and Ignition System Diagnostics<br />
S-EP08-03.01ILT Engine Performance: Air Induction and <strong>Fuel</strong> System Diagnostics<br />
S-EP08-04.01ILT Engine Performance: Fault Monitoring and Emission System Diagnostics<br />
S-EP08-05.01ILT Engine Performance: Advanced Drivability Diagnostics<br />
S-EP08-20.01ILT Toyota Engine Performance<br />
S-EP08-21.01ILT Chrysler Engine Performance<br />
S-EP08-81.01ILT Duramax 6600: Diesel Engine Performance<br />
S-SS04-01.01ILT Vibration Correction Diagnostics<br />
S-ST10-01.01ILT Supplemental Restraint Systems<br />
Readers Show Off Their Rides<br />
A few American classics are some of the rides <strong>TechConnect</strong><br />
readers have submitted for the Readers’ Rides gallery on<br />
<strong>TechConnect</strong> Magazine Online. To get the story behind the<br />
cars of fellow TSS shop owners and technicians and view a<br />
gallery of the cars, go to www.acdelcotechconnect.com and<br />
click on the <strong>TechConnect</strong> Magazine tab.<br />
To submit photos of your car or truck (include your name, TSS<br />
center, location and a few technical details about your vehicle):<br />
1976 Chevy Chevelle Laguna S-3,<br />
Scott Hamilton,<br />
Hamilton’s Car Care, Arlington, Texas<br />
1971 Dodge Dart Swinger,<br />
Bill Levine,<br />
Hamden Public Works, Hamden, Conn.<br />
8<br />
1. Go to the <strong>TechConnect</strong> Magazine Online website<br />
by clicking on the <strong>TechConnect</strong> Magazine tab on<br />
www.acdelcotechconnect.com<br />
2. Click on the Contact Us link<br />
3. Send an email with photos attached to technical<br />
editor Mark Spencer<br />
– Thanks to Mike DeSander<br />
1970 Chevy Chevelle SS,<br />
Ricky Stephenson,<br />
Car Concepts, Inc., Hurst, Texas