Sierra 1500 2WD V6-4.3L (2008)
4. Install the reverse signal pipe. Install the 2 bolts that fasten reverse signal pipe to the control valve assembly.
Tighten the bolts to 12 N.m (108 lb in).
5. Reconnect the internal wiring harness to the solenoid.
6. Install the oil pan and transmission internal oil filter. Refer to Oil Pan Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Fluid Pan/Service and Repair/Allison - Automatic Transmission) .
Important: The FastLearn, adapt, procedure must be performed. This can be done in 1 step using a scan tool. If this procedure is not
done, the TCM adaptive values will be at the settings that it learned for the old components and will be in slow adaptive mode. Under
these conditions, it will take an unacceptably long time for the adaptive values to converge to levels suitable for the new transmission.
7. Perform the FastLearn procedure. Refer to FastLearn Procedure (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing
and Inspection/Component Tests and General Diagnostics/Allison - Automatic Transmission/FastLearn Procedure) .
Control Valve Solenoid Replacement (SS1, SS2, SS3, TCC, and MAIN MOD)
Control Valve Solenoid Replacement (SS1, SS2, SS3, TCC, and MAIN MOD)
Removal Procedure
1. Remove the oil pan and the transmission internal oil filter. Refer to Oil Pan Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Fluid Pan/Service and Repair/Allison - Automatic Transmission) .
