Conditions for Running the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The ignition switch is in the RUN or CRANK position.
- DTC B1422 is not set.
- The ignition 0 voltage circuit input is within 8 to 16 volts.