PAL LED Indicator Malfunction
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.
- Ignition OFF, disconnect the PAL harness connector.
- Ignition ON, verify that a test lamp illuminates between the PAL B+ circuit terminal and ground.
- If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
- Verify that a test lamp illuminates at both PAL ground circuit terminals and B+.
- If the test lamp does not illuminate, test the ground circuits for an open/high resistance.
- If all circuits test normal, replace the PAL.