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Electric door locks do not lock or unlock

Tiny
DAVIDTERRY1958
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
The electric door locks do not work. I have to manually lock the doors. I checked the fuses and found one blown but that did not solve any problem. Power windows and mirrors work fine from the controls on the driver side. But, the door locks do not work on either side. I am not sure which wires go to the door lock and unlock. If I can get some assistance with troubleshooting it would be greatly appreciated
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Friday, March 31st, 2017 AT 2:41 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

It looks like there are a few relays that run the system, also I would check the main switch becasue all of the locks run through it. Here are the door lock wiring diagrams so you can do some testing.

Here is a guide to help you do the testing.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

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

Please run some tests and get back to us so we can continue helping you.

Best, Ken
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Monday, April 3rd, 2017 AT 12:18 PM

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