Circuit/System Verification
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.
Verify that the current sensor is mounted correctly on the battery cable. Refer to Battery Current Sensor Replacement (4.3L) or Battery Current Sensor Replacement (4.8L, 5.3L, 6.0L, and 6.2L) .