My back doors do not lock or unlock.

Tiny
MIKEFLA
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • 120 MILES
When I push the switch to lock my truck the only doors that lock are the two front ones. The back doors do not lock or unlock. Is this a relay problem? I am assuming the relay is under the dash. I did not see it in the electric center under the hood. Thanks. MikeFLA.
Monday, February 6th, 2012 AT 2:14 PM

2 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
The driver unlock relay is in the instrument panel fuse block. It looks like the other doors are controlled by the body control module.

See if you can hear the solenoid moving inside the doors. If so, pull the panels and reconnect the linkage. Check the wiring to the solenoids. See images/schematics attached. There are 2 models. I sent schematics for both.
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Monday, February 6th, 2012 AT 7:46 PM
Tiny
KENMCGOWAN
  • MEMBER
  • 1 POST
I'm having the same issue. I can't read the schematics. Could you email those to me?

Thanks, Ken
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Tuesday, December 4th, 2012 AT 3:47 PM

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