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Door locks, passenger side switch only unlocked?

Tiny
HAWAUKEY3
  • MEMBER
  • 1992 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 168 MILES
The driver's side door lock switch both locks and unlocks passenger side switch only unlocked. Grounds are good it's getting power.
Sunday, October 23rd, 2022 AT 3:27 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,320 POSTS
This happens when the door lock switch on the passenger's side goes out, but to be sure you can test the connection by following this guide and I have included the door lock wiring diagrams in the images below so you can see how it works and which wires to test.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Monday, October 24th, 2022 AT 11:34 AM
Tiny
HAWAUKEY3
  • MEMBER
  • 2 POSTS
It's not the switch. I have two brand new switches that work on the driver's side for both lock and unlock and soon as I put them on the passenger side it only unlocks.
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Tuesday, October 25th, 2022 AT 12:39 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,320 POSTS
It sounds like a broken wire at the door jamb which is common. Use the wiring diagrams above to test the connections and repair the wire as needed.
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Wednesday, October 26th, 2022 AT 10:16 AM

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