Yukon/Denali XL 1500 4WD V8-6.0L VIN U (2004)
![background image](/gmc/yukon/denali_xl_1500_4wd/v8-6.0l_vin_u/Page-465002.png)
Steps 1-9
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 ground integrity.