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2004 Chevrolet Silverado 1500 Question: Crew Cab Left Rear Window

 

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4Wolfman, V8, Elkview, WV, February 26, 2009, 14:16
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The left rear window goes down on its own. Took to dealer and they changed left rear switch, but did not fix. Anyone seen similar problems?

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    February 26, 2009, 15:00
     Master

    I am a little unsure of your problem. I read it as your l/r window rolls down by itself whenever it feels like it - how often does this happen? I am assuming the window rolls back up normally. There are three modules involved in your l/r window. The drivers window switch, the body control module, and the l/r window switch. The l/r switch has already been replaced so that leaves only two. A stray signal from either the drivers switch or the BCM is probably causing your problem. Viewing BCM data with a scan tool while the fault is occurring may be the only way to determine the exact cause of the problem.

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    4Wolfman, February 26, 2009, 15:18
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    Sorry Russ, I wasn't entirely clear. The l/r window went down 3 times on its own and would not go back up. We tried both switches and nothing happened. It finally went back up some time later. The thing that caught my attention was the fact that it happened every time we backed the truck into the driveway. Several days later, my dad told me that he had had a seat problem previously, but wasn't sure what was done to fix it. I am not exactly sure when the seat problem occurred or even what the problem was.

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    Russ, March 04, 2009, 20:00
     Master

    Interesting - Sounds like the BCM or the Dirvers master window switch is commanding the l/r window down and holding it there. What backing up the driveway has to do with it I don't know. Perhaps there is some sort of electircal interference in your driveway that is affecting one of the modules.

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