Conditions For Setting The DTC
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC will set under the following conditions:
- TCM detects that temperature change is under a set limit when compared to samples taken of the minimum and maximum temperature values.
- TCM detects noise in the temperature signal received.
- TCM detects a temperature decrease greater then a set limit from start-up.