Component Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

X88/Z88

Ignition OFF, disconnect the harness connector at the adjustable pedal switch.
Test for infinite resistance between the 12-volt reference terminal 11 and the signal terminals listed below:
- Terminal 10
- Terminal 12
- If not the specified value, replace the adjustable pedal switch.
Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 12.
- If greater than the specified range, replace the adjustable pedal switch.
Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 10.
- If greater than the specified range, replace the adjustable pedal switch.

Z75

Ignition OFF, disconnect the harness connector at the adjustable pedal switch.
Test for infinite resistance between the 12-volt reference terminal 5 and the signal terminals listed below:
- Terminal 4
- Terminal 6
- If not the specified value, replace the adjustable pedal switch.
Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 6.
- If greater than the specified range, replace the adjustable pedal switch.
Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 4.
- If greater than the specified range, replace the adjustable pedal switch.