Conditions for Running the DTC
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
C056D 33, C056D 34, C056D 35, C056D 36 or C056D 39
- Ignition ON.
- Runs once an ignition cycle.
C056E 41
- Ignition ON, engine OFF.
- Runs continuously.