C 2500 Yukon XL 2WD V8-8.1L VIN G (2002)
![background image](/gmc/c_2500_yukon_xl_2wd/v8-8.1l_vin_g/Page-1571003.png)
Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for a faulty tow/haul switch.
3. This step tests for voltage input from the BCM to the tow/haul switch.
6. This step tests for voltage through the body wiring harness junction block.
7. This step tests for ground integrity at the splice pack.