Door Locks

1999 CHEVROLET SUBURBAN
198,654 MILES • 7.4L • V8 • 4WD • AUTOMATIC
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SUNDOWN.57
  • MEMBER
  • 2 POSTS
All of a sudden with the switches there is no response. With the remote, it works fine. Back window, notta, needs key.
Sep 3, 2016 at 9:24 PM
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HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
check tosee if switches are getting and sending power if not they may be bad, then get scanned for codes by a mechanic.
Sep 4, 2016 at 8:14 AM
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SUNDOWN.57
  • MEMBER
  • 2 POSTS
It is a 99. Scanner is not any help.
Sep 4, 2016 at 2:01 PM
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HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
there is a door lock module at rear of truck to operate door locks. check fuse 13 in passenger area and door lock relay in center of dash if all that stuff is good along with first reply get scanned by a mechanic auto parts scanner are unable to pick up anything other than eng/trans codes. very few will pick up some abs codes.
Sep 4, 2016 at 3:31 PM