Shift shock while accelerating from A stop

Bulletin number

05-010-16

Component

Power train: automatic transmission: control module (TCM/PCM/tecm)

Summary

Shift shock while accelerating from A stop. Some customers may complain about a slight shift shock while accelerating from a stop and no A/T related DTC's are stored. The shift shock actually occurs intermittently at lock-up transition with the A/C on. Improperly learned values in the TCM for the lock-up slip control may cause excessive pressure for the lock-up clutch. To avoid improper learning, the control logic of the TCM has been changed. Customers having this concern should have their vehicle repaired using the following repair procedure.

Owners of these vehicles have filed 9 complaints in the transmission category.