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 in a forward gear range and shifting is completed, the transmission will fail to another forward gear range, unless the transmission is compromised by overspeeding or direction change, then the transmission will shift to Neutral.
- When in a forward gear range and the shift is in process, the transmission will return to a previous gear range, except for 1-2 shifts and 2-1 shifts where the shifts will be completed.
- When in Neutral or Reverse, the transmission will fail to Neutral.
- While diagnostic response is active, when the gearshift lever is moved from a forward gear range to Neutral or from a forward gear range to Reverse, then the transmission will shift to Neutral.
- DTC will be stored in the TCM history.
- The TCM freezes shift adapts.
- Illuminates the MIL when active.
- TCM inhibits TCC engagement.