Problems with power door locks?

CHEVROLET

LESS_THAN_CLUELESS

MEMBER
1 POST

1994 Chevy 1500 Extended Cab/185,000 miles

A few months ago the power locks stopped working in my truck. What is strange is that the power windows still work fine. I have changed all the fuses without any success. Also, the passenger side button will unlock both doors, but will not lock them. The driver side will not do anything. Any suggestions?

Jun 13, 2006 at 8:59 PM

WILDTHING

MEMBER
9 POSTS

hey i would start with switchs for both sides there priced decent and could just be that simple. If that dosent work you basically need manuals from the dealer and a mutimeter,testlight,and jumper wire to diagnose further.I just repaired my locks on a 94 camaro.good luck to you.

Jul 3, 2006 at 12:26 AM

MIKEYBDMAN

✓ASE Certified Mechanic
623 POSTS

If the passengers side works it means the switch on the drivers door has gone bad but to be sure here is a guide to help you check for power and I have included the door lock wiring diagrams so you can see how the system works and which wires to test. Also check the ground under the left side of the instrument cluster.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the images below. Please let us know what happens.

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Jul 8, 2006 at 5:35 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.