Power locks not working properly

Tiny
012352
  • MEMBER
  • 2004 CHEVROLET ASTRO
  • 4.3L
  • 6 CYL
  • 4WD
  • 127,000 MILES
The door power locks work for the back doors and the back passenger sliding door, but not for the two front doors. Thanks
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Friday, April 22nd, 2022 AT 11:22 PM

1 Reply

Tiny
KASEKENNY
  • EXPERT
More than likely this is a relay issue as you have a relay for the front and rear doors, so we need to check the voltage coming out of the relay.

Here is a guide that will help with testing the relay:

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

Also, here is a guide that will help with doing some wiring testing:

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

I am attaching the wiring diagram below which will help with this.

The easiest way to check this is to see if you have power at the actuator or leaving the relay so let me know if you have questions on this and then we can go from there depending on what you find.

Thanks
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Saturday, April 23rd, 2022 AT 7:07 PM

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