Sierra 2500 Denali 2WD V8-6.0L (2011)
7. Install the detent spring assembly (2) onto the control valve assembly. Confirm that the roller of the detent spring assembly rests on the detent
lever (1).
8. Attach the IMS connector on the internal harness to the IMS.
9. Install 2 detent spring bolts (3).
Tighten the bolts to 12 Nm (108 lb in).
10. Install the oil pan and transmission internal oil filter. Refer to Oil Pan Replacement (See: Fluid Pan/Service and Repair/Allison - Automatic
Transmission).
11. Connect the external wiring harness to the transmission main connector.
Note: 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.
12. Perform the FastLearn procedure. Refer to FastLearn Procedure (See: Testing and Inspection/Programming and Relearning/Allison - Automatic
Transmission).
