Installation Procedure
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Obtain a new SS 2 (1), SS 3 (4), TCC PCS (7), or modulated main pressure solenoid. Install O-rings (2 and 3) and lubricate with clean transmission fluid. Push the new solenoid into the control valve assembly (5) with the wiring harness connector in the correct position.
- Install the solenoid retainer (6). Connect the internal wiring harness to the solenoids replaced.
- For a new TCC PCS (7), install O-rings and lubricate with clean transmission fluid. Push the new TCC PCS (7) into the control valve assembly with the wiring harness connector in the correct position.
- Install the TCC PCS retainer and bolt.
Tighten: Tighten the bolt to 12 N.m (108 lb in).
- For a new SS 1 (5), install O-rings (3 and 4) and lubricate with clean transmission fluid. Push the new SS 1 (5) into the control valve assembly with the wiring harness connector in the correct position. Install the solenoid retainer (2).
- Install the oil pan and transmission internal oil filter. Refer to Oil Pan Replacement .
- Perform the FastLearn procedure. Refer to FastLearn Procedure .
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.