Door locks making weird noise?
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Joined: Jul 2008
Posts: 55
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From: Tacoma WA
Door locks making weird noise?
Today I accidentally hit the lock button on my remote before my passenger shut the door. When I did it made a weird buzzing noise. It continued to make the noise once the door was close, but still locked and unlocked fine. It only makes the noise when I hit the lock button via remote or door lock. It even makes the noise once it locks after the car is started. Any idea what this is and how to fix it? Thanks
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
Thats unusual.
The door lock modules are notoriously unreliable on this car. GM used some pretty cheap relays and they often seize up causing problems.
The strange thing is it shouldn't make a difference if you operate the door lock on the fob or the door switch. Either way just commands the module to lock or unlock so the noise should be the same. Operating the doors open or closed shouldn't make any difference and there shouldn't be any noise.
One thing you can check easily is the gaiter in the door. There's an accordian type tube that protects the wires funning into the door. Pull it back and take a look at the wire bundles and connectors inside. Check carefully for any chafing or the wiring. Its been known to cause failures or relay chattering.
Other than that I think I'd be pulling the door panel to take a good look at what is causing the noise. If its the module its easily changed.
The door lock modules are notoriously unreliable on this car. GM used some pretty cheap relays and they often seize up causing problems.
The strange thing is it shouldn't make a difference if you operate the door lock on the fob or the door switch. Either way just commands the module to lock or unlock so the noise should be the same. Operating the doors open or closed shouldn't make any difference and there shouldn't be any noise.
One thing you can check easily is the gaiter in the door. There's an accordian type tube that protects the wires funning into the door. Pull it back and take a look at the wire bundles and connectors inside. Check carefully for any chafing or the wiring. Its been known to cause failures or relay chattering.
Other than that I think I'd be pulling the door panel to take a good look at what is causing the noise. If its the module its easily changed.
Last edited by DeeGee; Aug 14, 2008 at 12:27 AM.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
I'd guess that the door lock module is giving up the ghost.
Search for the post by Bakersfield. I'll try to find the link. It explains all you need to know about door lock problems.
Search for the post by Bakersfield. I'll try to find the link. It explains all you need to know about door lock problems.
Burning Brakes
Joined: Jun 2005
Posts: 896
Likes: 1
From: Ewing NJ
Thats unusual.
The door lock modules are notoriously unreliable on this car. GM used some pretty cheap relays and they often seize up causing problems.
The strange thing is it shouldn't make a difference if you operate the door lock on the fob or the door switch. Either way just commands the module to lock or unlock so the noise should be the same. Operating the doors open or closed shouldn't make any difference and there shouldn't be any noise.
One thing you can check easily is the gaiter in the door. There's an accordian type tube that protects the wires funning into the door. Pull it back and take a look at the wire bundles and connectors inside. Check carefully for any chafing or the wiring. Its been known to cause failures or relay chattering.
Other than that I think I'd be pulling the door panel to take a good look at what is causing the noise. If its the module its easily changed.
The door lock modules are notoriously unreliable on this car. GM used some pretty cheap relays and they often seize up causing problems.
The strange thing is it shouldn't make a difference if you operate the door lock on the fob or the door switch. Either way just commands the module to lock or unlock so the noise should be the same. Operating the doors open or closed shouldn't make any difference and there shouldn't be any noise.
One thing you can check easily is the gaiter in the door. There's an accordian type tube that protects the wires funning into the door. Pull it back and take a look at the wire bundles and connectors inside. Check carefully for any chafing or the wiring. Its been known to cause failures or relay chattering.
Other than that I think I'd be pulling the door panel to take a good look at what is causing the noise. If its the module its easily changed.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
This is Bakersfields post which is about the best there is on this topc. The pics explain everything
http://forums.corvetteforum.com/show...highlight=door
Drifting
Joined: Jan 2005
Posts: 1,650
Likes: 2
From: Bakersfield Ca
Hey guys, I would suggest you replace the lock and unlock relays in the passenger side door control module. Your only talking about $10 to $12 and most of that is the shipping costs. Use the link DeeGee provided and it will explain how to do it. If you don't feel comfortable doing it, send the door control module to me and I can fix it for you. Just shoot me a PM and we can work out the details. Good luck. 
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