Diagnostic Aids
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic trouble code may set due to low system voltage. Ensure that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test . Verify charging system is operating correctly. Refer to Charging System Test . Verify there is no parasitic drain on the battery. Refer to Battery Electrical Drain/Parasitic Load Test .