UP LS2 LS3 L99 w/4L65E 4L70E 4L80E 4L85E Fuel Injection ...

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Introduction:This stand-a-lone fuel injection harness operates any 2006-UP Gen IV LS2/LS3/L99engine with 4L65/70E or 4L80/85E transmissions. Fuel injection/transmission wires arecolor coded as a 2007-2009 Chevrolet full size truck. With this harness fitting such awide range of vehicles, these instructions should be considered general installationprocedures. Please do not attempt to modify this Painless harness to function as yourfactory harness did. We have developed this harness to function as this manualinstructs you to connect it.Contents of this Painless wire harness kit:Make sure that you have everything you’re intended to have in this kit. If you find thatanything is missing or damaged, please contact the dealer where you obtained the kit orPainless Performance at (800) 423-9696.This Painless Wire Harness Kit should contain the following:• One fuel injection wire harness that looks like the front page picture.• A large parts bags containing heat shrink, 4 inch zip ties, 7 inch zip ties, rubberalternator wire boot, a rubber grommet, terminals, and a 40 Amp circuit breaker.• This installation manual.• Warranty card. Please fill this out and send it in.Things to know about the Delphi Engine Control Module (ECM) andTransmission Control Module (TCM) utilized with this Painlessharness and why you should send them to Painless to be flashed witha proper base calibration.• The ECM & TCM required for this harness was factory installed in many differentmakes and models of General Motors vehicles. Both V6 and V8 engines can beoperated by these controllers. When procuring an ECM & TCM from a salvageyard, for use with this harness, be sure to specify it be from a 2007-2009Chevrolet V8 truck/suv. If you have an ECM & TCM but do not know for a factwhat the calibration is in it or need the calibration modified please visit ourwebsite www.painlessperformance.com and sign up for our ECM re-flashprogram. We can program your ECM and TCM with the correct base calibrationsfor your specific application of this harness.• The factory calibration on an ECM & TCM from a Chevrolet truck will not properlyoperate the engine/transmission without several modifications.o Pass-Key anti-theft system must be turned off or otherwise the engine willcontinuously start for two seconds and then die, when cranked.o Factory installed emission devices include: fuel tank pressure sensor, tankvent solenoid, tank purge solenoid, air pump, air pump solenoid, andexhaust gas recirculation solenoid. The calibration installed at the GMfactory onto your ECM tells it to look for all of these emissionscomponents. This Painless harness does not include any supportingwiring or connectors for these.3
o Gear ratios and tire diameters are most likely different when comparingthose from a late model truck and your project vehicle.o Fuel, spark, idle and shift strategies need to be calibrated. Painless canprovide a base calibration for these in order to get your vehicle up andrunning. Optimal fuel economy and power will require the vehicle to betuned by a professional tuner or do it yourself with any number ofaftermarket software available to the public.Non-electrical parts and other things you should consider whentransplanting a Gen IV engine and transmission include:• If your engine has not ran for several months or more you will probablyexperience the joy of clogged injectors when you go to fire it up for the first time.Do yourself a favor and have the injectors cleaned, or purchase new fuelinjectors. If you do not, your engine will probably not start due to clogged fuelinjectors.• Fuel system requirements include a high pressure, 56-60 PSI, fuel pump. Thefuel feed line to fuel rail must be at least -6AN or 3/8” in size for stock engine,400-450HP, setups. If your engine’s output is more than 450HP you should use -8AN or ½” fuel rail feed line. Walbro manufactures a wide variety of highpressure fuel pumps and installation kits. They have many internet distributorsincluding www.aztpi.com.If your vehicle’s fuel tank is one with the early small 1 & 13/16” hole sending unityou have several options of how to upgrade it. One option is to modify thesending unit yourself by adding a fuel return line. Another option is to replace thesending unit with an aftermarket one from a company such aswww.robbmcperformance.com. They offer drop in units with a variety of tubesizes and adapter fittings. The other option is to have a company such aswww.rockvalleyantiqueautoparts.com cut out the old flange and weld in a largeflange from a later model 1984 & up GM vehicle. The larger flange will allow foran in tank mounted fuel pump.Gen IV engines have dead headed fuel rails. They require 58 pounds of fuelpressure. GF-822 is a Delco return type fuel filter/regulator that can be plumbedin between the fuel pump and fuel rail. It will filter the fuel and maintain 58 PSI atthe fuel rail. Another option is to mount an external bypass regulator such as onefrom Aeromotive. Just be sure to purchase a regulator that can handle 58 PSIand the amount of fuel volume that you need.• Gen IV engine cooling systems have some specific requirements. First, thelower radiator hose connects to the water neck with the thermostat behind it. Iflooking at the front of the engine it is the water neck to the lower left of the waterpump. The upper radiator hose connects to the water neck at the top of thewater pump. Second, the factory coolant thermostat only starts to open at 195 o Fand is fully open at 210 o F. Aftermarket thermostats are available that will open at4
Page 1 and 2: Wire Harness InstallationManual #90
Page 3: TABLE OF CONTENTSINTRODUCTION ….
Page 7 and 8: alternator and power steering pumps
Page 9 and 10: Disconnect battery cables from theb
Page 11 and 12: Alternators and Charge Wires:Built
Page 13 and 14: Electronics and Heat Don’t Get Al
Page 15 and 16: Mounting the Fuse Block:This fuse b
Page 17 and 18: Harness Routing:Now that the ECM, T
Page 19 and 20: Making the Harness Connections:At t
Page 21 and 22: In the parts kit you should find se
Page 23 and 24: On the driver side of the engine bl
Page 25 and 26: NOTE: Don’t forget about the inli
Page 27 and 28: Route the throttle body connector o
Page 29 and 30: Electric Cooling Fans:This 60524 ha
Page 31 and 32: Transmission Connections:Depending
Page 33 and 34: Oxygen Sensors:This harness utilize
Page 35: Accelerator pedal: Pictured below i
Page 38: Fuse block through hole template:Cu

UP LS2 LS3 L99 w/4L65E 4L70E 4L80E 4L85E Fuel Injection ...

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