2004 Grand Prix GT airbag light flashes 6 times and then stays on - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-06-2011, 11:50 PM   #1
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Default 2004 Grand Prix GT airbag light flashes 6 times and then stays on

I tried replacing the battery since the one that was in it was completely dead and wouldn't hold a charge. I left it disconnected for 15+ mins and then hooked it up, it still comes back.

Anyone have this problem before? I couldn't find this specific problem in the archives.

Thanks,

lbrowne
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Old 02-06-2011, 11:57 PM   #2
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Have you had the car scanned? I do believe that is showing a problem with the air bag system. A scan should say what is wrong.
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Old 02-07-2011, 12:22 AM   #3
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Actually the problem is the light just stays on.

Is there a way to retrieve the code? The 6 times it blinks on startup is the initial system test I believe, and after the final blink it should stay off. Mine stays on.

Going to a local stealership here is really going to cost me. I would think there is some way for me to get a code myself...

I know it can come on from a bad battery not supplying enough voltage and the car had an absolute flat battery when I bought it. I would also think the system would reset itself after I replaced the battery, but maybe not?

I'll check fuses tomorrow.
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Old 02-07-2011, 11:35 PM   #4
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You would need a code reader that does enhanced codes.
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Old 02-08-2011, 01:42 AM   #5
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Quote:
Originally Posted by lbrowne View Post
Is there a way to retrieve the code? The 6 times it blinks on startup is the initial system test I believe, and after the final blink it should stay off. Mine stays on.
Most GM'* flash the airbag light seven times to indicate a successful power-on self-test, at which point the light is turned off.

Underneath the dashboard are two black hush panels (one on each side of the car). Remove the screws holding a panel in, and you'll find a yellow connector controlling the airbag. Make sure it is firmly connected. If both connectors are connected, that'* about all the airbag diagnostics that you can safely do on your own.

Last edited by SignOfZeta; 02-08-2011 at 01:42 AM. Reason: Grammar.
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Old 02-08-2011, 02:35 AM   #6
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Quote:
Originally Posted by SignOfZeta View Post
Most GM'* flash the airbag light seven times to indicate a successful power-on self-test, at which point the light is turned off.

Underneath the dashboard are two black hush panels (one on each side of the car). Remove the screws holding a panel in, and you'll find a yellow connector controlling the airbag. Make sure it is firmly connected. If both connectors are connected, that'* about all the airbag diagnostics that you can safely do on your own.
Yeah I figured out the initial blinks are normal.

I'll check those panels. I've done some pretty extensive airbag testing and troubleshooting on a late model focus to find out a front crash sensor had gone bad. Basically the connectors were oxidized etc. I've down safe power drains etc with the systems. But I understand working on these systems is not for everyone and there'* risks involved.

Are there any airbag modules or harnesses under the seats? The carpet is wet and I'm thinking maybe something got moisture damage.

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Old 02-08-2011, 02:39 AM   #7
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I can't speak for anything but my car, but if you just have two front airbags like me, I'd very highly doubt it. Airbag wiring is almost always yellow, tagged, or both.

If you're comfortable with airbag work, the site I got my information from says to check the connectors underneath the airbag modules themselves. Might just be oxidization like the Focus.
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Old 01-15-2012, 05:28 PM   #8
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I know this is an old post but I figured I'd follow up on what I've found.

This car when I bought it had the issue of water getting into the cabin because the weather stripping at the bottom of the windshield had fallen off. Needless to say the airbag SDM under the passenger seat took on some water damage and I believe it'* toast.

Heres a pic:



Now I just need to know what other GM cars have this exact unit, I have a pick n pull very close to me - it can't be only in Grand Prixs I would think...
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Old 01-15-2012, 06:05 PM   #9
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I would assume the other 3rd gen w-body (GP, Buick Lacrosse, 2006+ Impala and Monte Carlo) would have the same ones.. Maybe even the other platforms. You should probably try to get one from a GP like yours though, so you have a better chance of having one like it.
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