C 1500 Yukon 2WD V8-5.3L VIN Z Flex Fuel (2003)
![background image](/gmc/c_1500_yukon_2wd/v8-5.3l_vin_z_flex_fuel/Page-2081002.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.