windows won't go down, radio stays on, keyless entry not functioning - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-11-2013, 11:27 PM   #1
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Default windows won't go down, radio stays on, keyless entry not functioning

So it'* not the wiring under the drivers seat, it'* not the circuit breaker, strangly enough the seat memory button doesn't change the seat, but the mirrors change....
Radio stays on regardless of which door opens, had to remove it'* fuse to keep the clock from staying on
Dome lights do not turn on when the keyless entry is pushed or when the doors are opened.

I need some help boys.... BCM?? DCM? Door jam switch?

If it is the switch, where is it?

As always thanks guys....
2004 GXP, HIT 164K MILES TODAY.......
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Old 05-13-2013, 10:12 AM   #2
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Do you still have the factory radio in your car?
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Old 05-13-2013, 11:29 AM   #3
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yeah, factory radio.....

ordered a BCM today from Rock, should solve the issue.
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Old 05-13-2013, 12:43 PM   #4
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Everything is tied in through the same harness that passes through the radio (which is why I asked if you were still running stock). Let us know if the BCM doesn't solve your problem.
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Old 05-13-2013, 01:08 PM   #5
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please elaborate on everything running through the radio. Did I miss something when I researched the wiring diagrams and schematic.
The radio is on it'* own fuse, while the power Windows are on a 30amp circuit breaker.
I couldn't find a fuse for the power locks or seat memory.
The kicker is if I hit button 2 on the seat memory, the mirrors move from the button one setting, but not the power seats. This is why several people locally told me it is the BCM.
To elaborate further, the radio was the issue before anything else went out. The radio would stay on when I opened the door. If I closed it and reopened it 9 times our of ten the radio when off.
It wasnt until Saturday that everything pooped out all at one.
I yanked the front seat and checked for water damage, or frayed wires grounding out or shorting.
no dice. Swapped the Rim since I have extras, and no dice.
Pulled the window switch from the door, and the seat memory/door handle cover and made sure I had good connections etc

1 day last week the windows wouldnt go back up, I grabbed the harness in the door that is covered by the rubber hose and shook it, windows went right back up.

If you can think of anything else other than the PCM and BCM that could be my causes I welcome the suggestions.
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Old 05-13-2013, 03:20 PM   #6
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if you can grab wires and shake them and fix it, theres loose connections in the door or bcm or a wire chafing to ground. might have multiple issues
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Old 05-13-2013, 04:25 PM   #7
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What I meant is that there is a "data" wire that passes through the radio harness and if that connection gets broken it can affect other things in the car. If you have a factory radio then this is not your issue.

On the other hand, if your BCM was malfunctioning or the wire was damaged/loose elsewhere it could cause the symptoms you are experiencing. When you open your door the BCM should send a signal telling the car to turn off acc power. With a damaged BCM or Data wire this won't happen, along with other functions in the car. If you already ordered the BCM then the easiest first test will be to replace it and see if that solves your problem. The wiring under the driver seat also tends to get loose. I just had to go wiggle and tighten my wires to get the airbag light to stop flashing. You might try re-seating the harnesses under the seat and making sure none of the connections are loose or wires damaged.
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Old 05-13-2013, 04:38 PM   #8
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Also, I seem to remember that the BCM needs to be programmed at a dealership, I don't think you can just swap them.
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Old 05-13-2013, 06:36 PM   #9
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Tom is correct, unless you have a Tech 2 scanner, you are not going to be able to do the programming yourself.
If you get the BCM, and install it without programming it, then I am pretty sure your car is not going to start at all, due to the Passlock Learn Procedure not being performed.
So if you install it yourself you are probably going to have to have it towed somewhere that can do the programming, then have the Passlock Learn Procedure performed.
There is an Auto Learn Passlock Procedure, but you may as well have whoever does the BCM programming do it on the Tech 2.
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Old 05-18-2013, 03:50 PM   #10
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yep BCM did not fix problem, and I was aware of it needing programmed guys.

Took the seat out last week and that wasn't it.

What color is the data wire that runs through the radio?
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