2004 Pontiac Grand Prix Automatic Locks Cycle Repeatedly

2004 PONTIAC GRAND PRIX
70,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
ANDORUN
  • MEMBER
  • 1 POST
I have a 2004 Grand Prix and about a week ago when I would unlock my car using the keyless remote the car would continue to unlock itself, lock itself, pop the trunk, and would cycle through these multiple times. After driving for a few minutes this would stop, but it will do it again the next time the car is unlocked.

I switched out my keyless entry remote with the spare, and it still did it. I pulled the fuse on the keyless and just used the key manually, and it still did it. I finally pulled the fuse on the automatic locks, and although the locks and trunk have stopped cycling, I can still hear clicks/noises coming from the driver side automatic lock/window switch area.
Oct 26, 2009 at 6:40 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
SERVICE WRITER
  • CAR REPAIR CONTRIBUTOR
  • 9,123 POSTS
Sounds like a malfuntion in the body control module.


https://images.2carpros.com/forum/automotive_pictures/30961_gp_2.jpg

I would start by getting the codes from the bcm, then a test procedure can be done. May need to reprgram or replace the BCM, but I wouldn't jump to that conclusion until testing is done through the codes.
Oct 27, 2009 at 5:49 AM
Advertisement