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

Transmission Connections:Depending on whether your transmission is a 4L65E, 4L70E, 4L80E or 4L85E then thesolenoid pack connector is located on the passenger or driver side of the transmission.4L65-70E has it located on the passenger side and the 4L80-85E is on the driver side.Locate the connector on your transmission and plug the corresponding harnessconnector into it. The 4L65-70E vehicle speed sensor is located in the tail shafthousing of the transmission. Locate the vehicle speed sensor in your transmission andplug the corresponding connector labeled VSS into it. If you have a 4L80-85E see notebelow.Note: Converting the 4L65-70E Transmission Connector to a 4L80E-4L85EConnector. All harnesses have the transmission connector pre terminated to allow useof the 4L65E/4L70E transmission. In applications where a 4L80E-4L85E is to be usedfollow this procedure to change your transmission connector to ensure all functions ofthe transmission work properly.• With the terminal end of the connector and the arrow on top pointing towardsyou, carefully remove the white retaining lock located in the center of theconnector.• Locate the white wire located in terminal location S. Using a paper clip or smallscrewdriver, gently lift the locking tab inside the connector and pull the wire fromits location.• Now locate the brown wire located in terminal location U. Using the samemethod, remove the brown wire from its location• Gently insert the brown wire into terminal location S.• The white wire has no function with the 4L80E transmission; it needs to be tapedup and stowed in the harness in case a 4L65E is ever to be used.30