Back door will not open with key remote

Tiny
JAMES4629
  • MEMBER
  • 2007 CHEVROLET EXPRESS
  • 4.0L
  • V8
  • 2WD
  • 200,000 MILES
Hi, my back door locks with the key fob but will not open with the key fob. I installed a brand new actuator assembly and the problem remains the same.
Friday, November 15th, 2019 AT 7:24 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,602 POSTS
Hello,

It sounds like you have a cargo unlock relay that is out. To be sure here is a guide to help test it with the relay location and I have included the lock system wiring diagrams so you can see how the system works:

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

Can you please shoot a quick video with your phone so we can see what's going on, that would be great. You can upload it here with your response.Check out the diagrams (below). Please let us know what happens.
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Saturday, November 16th, 2019 AT 12:59 PM

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