Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the X5 harness connector at the BCM.
- Test for greater than infinite resistance between the BCM ignition circuit terminal 13 and ground.
- If less than specified, test for a short to ground.
- If the circuit tests normal, test or replace the BCM.