Sierra 1500 4WD V8-6.0L (2007)
12. Install a new 1-2 accumulator piston seal (1) to the 1-2 accumulator piston.
Important: RPO M33 transmissions do not use a 1-2 accumulator spring inner (104).
13. Assemble the 1-2 accumulator assembly (54, 56, 57, 104). Ensure that the piston legs face the accumulator cover.
14. Install the 1-2 accumulator cover (57) and pin.
15. Install the 1-2 accumulator cover and the accumulator cover bolts.
Tighten the bolts to 11 N.m (97 lb in).
16. Remove the J 25025-B from the transmission case.
17. Install the valve body.
18. Install the transmission filter.
Important: It is recommended that transmission adaptive pressure (TAP) information be reset.
Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM),
powertrain control module (PCM) or transmission control module (TCM) will need to relearn TAP values. Transmission performance
may be affected as new TAP values are learned.
