Component Testing

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. 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.