Component Testing
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Door Lock Switch
- Ignition OFF, disconnect the harness connector at the appropriate door lock switch.
- Test for infinite resistance between the signal terminals D and E and the ground terminal B with the switch in the open position.
- If not the specified value, replace the door lock switch.
- Test for less than 2 Ω between the signal terminal D and the ground terminal B with the switch in the LOCK or UNLOCK position.
- If greater than the specified range, replace the door lock switch.
- Test for less than 2 Ω between the signal terminal E and the ground terminal B with the switch in the LOCK or UNLOCK position.
- If greater than the specified range, replace the door lock switch.
Door Lock
- Ignition OFF, disconnect the harness connector at the appropriate door latch.
- Install a 15A fused jumper wire between one of the control terminals and 12V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the door latch should perform the LOCK and UNLOCK functions.
- If it does not perform as specified, replace the door latch