Action Taken When The DTC Sets
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
TCM performs the following actions if DTC is set:
- When failure occurs in a forward gear range and shifting is complete, the transmission remains in the current gear range. When failure occurs while in a forward gear range and the shift is in process, the transmission returns to the previous range, except in post-shift state, where the transmission will continue to the commanded gear range. When failure occurs in other conditions, the transmission shifts to 1st, 3rd, or 5th gear. While diagnostic response is active, if the gearshift lever is moved to Neutral or Reverse or any other forward gear range, then the transmission will lock in Neutral.
- DTC will be stored in the TCM history.
- The TCM freezes shift adapts.
- Illuminates the MIL when active.
- TCM inhibits TCC engagement.