Thank you jackleg for those pictures!
For some reason I wasn't understanding what I was looking for until I found this thread!
rear windows don't work
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- Posts: 44
- Joined: Sun Jan 15, 2023 3:35 pm
Re: rear windows don't work
Bringing this one back from the dead. Both back windows do not operate from any switch. I checked the white plug with blue wire under the passenger front seat, and it was either never unplugged from the real plug, or the previous owner plugged it back in. The false plug was still taped to the wire harness. I checked for power on either side with key on, and any window switch from the driver to the back doors. There seems to be no power with the blue wire. Not sure if it is a power wire, or a ground. Where should I look next? I am sure it is something simple...... I hope
Phantom Black 2012 9C1 L77
Past cars
2009 Pontiac G8 GT
1995 Caprice 1A2 police wagon
3 1994 caprice 9C1s
4 Buick Roadmaster Wagons
2 1995 Cadillac Fleetwoods
2 1994 Impala SS
1 1996 Impala SS
1 1996 Roadmaster sedan
1 1995 Roadmaster Sedan
1 1992 caprice 9C6
1 1991Caprice
1 1987 Grand National
1 1986 Camaro IROC 5 speed
Past cars
2009 Pontiac G8 GT
1995 Caprice 1A2 police wagon
3 1994 caprice 9C1s
4 Buick Roadmaster Wagons
2 1995 Cadillac Fleetwoods
2 1994 Impala SS
1 1996 Impala SS
1 1996 Roadmaster sedan
1 1995 Roadmaster Sedan
1 1992 caprice 9C6
1 1991Caprice
1 1987 Grand National
1 1986 Camaro IROC 5 speed
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- Posts: 2305
- Joined: Sat Feb 07, 2015 2:31 pm
- Location: Pearland, Texas
Re: rear windows don't work
Did you check your SPID label for option 6N5? If you have that option, your rear windows will not work from any switch without a reprogram to disable it.
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2018 Tahoe PPV (her car)
1995 DGGM Impala SS
1985 Firebird - 310 LS1 C Prepared autocross car.
1980 Bluebird Wanderlodge
And some others
Do YOU have my SPID?
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2018 Tahoe PPV (her car)
1995 DGGM Impala SS
1985 Firebird - 310 LS1 C Prepared autocross car.
1980 Bluebird Wanderlodge
And some others
Do YOU have my SPID?
Re: rear windows don't work
I would check the wiring harness between the drivers side front door and the car body. I had the same issue with mine and there were multiple broken wires in this section. Once i replaced the harness, the rear windows worked from the drivers door switch as well as the switches in each of the rear door panels. New harness is expensive if still available. Hope this helps!
JRWolff
JRWolff
Twin 2012 9C1's
1991 R2500 Banks Turbo Diesel Suburban
1990 V2500 Banks Turbo Diesel Suburban
1991 GMC Syclone
1986 Buick Grand National
1991 R2500 Banks Turbo Diesel Suburban
1990 V2500 Banks Turbo Diesel Suburban
1991 GMC Syclone
1986 Buick Grand National
Re: rear windows don't work
Sorry to dig up this old post but has anyone with a 14 and newer head the BCM reprogrammed and what did it cost you? Thanks
Re: rear windows don't work
I reprogrammed my bcm about a year ago. I did it myself with a pass thru programmer, so the cost was around $50.00. It was a little bit of a pain in the butt though. GM didn't have a working calibration available for it, so I had to set an appointment for them to make the file available for me. I don't exactly remember the process, but it wasn't easy like most GM cars are. It did work though.
Joe
Joe