K 1500 Truck 4WD V8-4.8L VIN V (1999)
![background image](/gmc/k_1500_truck_4wd/v8-4.8l_vin_v/Page-2022003.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.