Power locks not working properly

2004 CHEVROLET ASTRO
127,000 MILES • 4.3L • 6 CYL • 4WD
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012352
  • MEMBER
  • 1 POST
The door power locks work for the back doors and the back passenger sliding door, but not for the two front doors. Thanks
Apr 22, 2022 at 11:22 PM
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KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,907 POSTS
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
Apr 23, 2022 at 7:07 PM
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