Diagnostic Aids
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.
- A slight resistance of 20-30 ohms on the 5-volt reference or low reference circuits may cause this DTC to set.
- Verify that any electrical aftermarket devices are properly connected and grounded. Refer to Checking Aftermarket Accessories .