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Old 11-18-2012, 09:55 PM   #1
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Default Need Electrical Diagram Help-Driver Door Module

Help Need electrical diagram for PA 97 drivers door module and associated wiring diagram -as problem below:
Second time this has happened in a year. I temporarily lose all drivers door functions. No power windows, no locks, no mirrors, switches not illuminated.
Passenger door also does not work for locks/window at time of fault.
Remote does allow only drivers door to lock but not paaenger side at time of fault.
So I look at owners manual find fuse is 15 for drivers door module, fuse is good.
No mention of separate fuse for locks/windows..eh ah not sure what to think on that one.
Anyways I let car sit for 20 minutes re-start it and whatcha know everything works again??
Ok so can someone point me onto a direction on this? I am sure once I see a wiring diagram I will know more about what is actually controlling system.
Last time this happened it was a day before the re-start fixed itself....not fun.
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Old 11-19-2012, 08:28 AM   #2
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im sorry i dont have a diagram for that. its likely in the door or part of the door switches.

kinda sounds like a comm bus issue, i remember a thread on the comm buss had a connection under the driver seat and that went bad not allowing the other doors to work.
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Old 11-19-2012, 08:36 AM   #3
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Old 11-19-2012, 08:38 AM   #4
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Thanks for that Justin. I am not sure it would be the bus based on restarting the vehicle and then it works again. To me it is more like a module or even the BCM gone 2 sleep or on a holiday! Wonder if there is a relay in there or something else cant see without diagram..
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Old 11-19-2012, 08:54 AM   #5
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the bus is the common thing, between the other doors and bcm
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Old 11-19-2012, 11:56 PM   #6
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Wonder if the bus is in the rear seat harness location on the PA as the post on the aurora?
Wonder if it could be the door module itself?
Would there be any fault codes when this happens that could be scanned or read?"
I hate electrical problems. I will pull the rear seat and have a look...
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Old 11-20-2012, 07:34 AM   #7
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if your scanner reads body codes, but likely all it would say is comm error and you would still have to find the problem. one other thing i think your car would have the ground bus same as my bonnie and that was causing crazy intermittent faults have you ever inspected that for corrosion?

https://www.gmforum.com/electrical-1...1999-a-303224/
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Old 11-20-2012, 08:30 AM   #8
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Yup have had a comm error before stored.
I will have to take the moldings off and try and find & clean that critter soon.
Everything seems to be working fine right now. Will re-scan it when it fails again to see if I can get more data retrieved.
Thanks Justin.
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