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2004 Pontiac Grand Prix Doors won't lock

Tiny
STEVE GRONKJAER
  • MEMBER
  • 2004 PONTIAC GRAND PRIX
Electrical problem
2004 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic

My doors won't lock when using the key fob. The horn will sound and lights flash as if they were locking and the alarm is set but the doors don't lock. All other functions from the fob are working such as trunk unlock alarm set and doors unlock. Any suggestions?

Thanx
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Monday, January 26th, 2009 AT 9:20 AM

3 Replies

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Start simple, replace battery in key fob.

If you can lock/unlock doors using key in door, and buttons inside, then you will probably have to go to GM and have a dealer look at it.

Also check fuses.
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Thursday, January 29th, 2009 AT 10:58 AM
Tiny
STEVE GRONKJAER
  • MEMBER
  • 2 POSTS
Thanx for the reply.I did replace the batteries in the fob and also went to a Gm dealer who siad they would replace a computer part for $650.00 but wouldn't gauranty it would solve the problem. Any help is apreciated!
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Friday, January 30th, 2009 AT 6:01 AM
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
Try finding the part GM said needed to be replaced at a junk yard. Only problem with this is that it will probably have to be flashed to your VIN, by GM.
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Saturday, January 31st, 2009 AT 9:44 AM

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