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Suburban Door Locks and Windows
My husband and I just bought a 99 Tahoe. We assumed that the rear cargo doors could be opened using the master door lock at the driver's door, but they won't. Is that switch supposed lock and unlock that back door or do you always have to use the key to do it? Also, the two windows in the back seat will only go down a fraction of the way. I found a child safety switch on each door jam and slid it over to disable the switch thinking that would make a difference, but the windows still lowered to the same height. Is there anything else I can do about it? And, while I'm on the subject, the master door lock at the driver's door seems to have some problems locking and unlocking the front passenger door and also the driver's door. Sometimes it works just fine and sometimes the lever will only go part of the way up or part of the way down. The two back passenger doors seem to work fine from that switch. Do I need to replace the switch, the motor for the locking mechanism, or just try to clean the contacts? Any suggestions would be appreciated since we didn't get an owner's manual with the car and have no idea what to do.
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The master door lock at the driver's door should control the rear cargo doors.
Your reply stated that the master door lock at the driver's door SHOULD lock and unlock the rear cargo doors, so since ours won't, do you have any suggestions as to what we need to do? Someone said to try cleaning the small square brass contacts on the door frame of the cargo doors, so my husband did that last night and was able to get the master door lock to LOCK the rear door, but it wouldn't UNLOCK it, so I assume the contacts are still a little dirty. Another person suggested that we buy some electronic contact cleaner, the kind they use on computers, and spray some of that on all the contacts. The master door lock also seems to have problems locking and unlocking the driver's door sometimes, so maybe all the contacts in the driver's door locking system need to be cleaned. What do you think?
The reason the rear windows don't go down far is the wheel cut out not allowing full travel of the glass.
Regarding the manual, I recommend you visit: https://www.mygmlink.com
There you can register your vehicle and download a pdf copy of the manual for free. Go to 'vehicle home' then go to 'glovebox'. There's also lots of other useful info on your vehicle such as maintenance schedules, recalls, etc.
In regards to the rear cargo door locks, my husband tried cleaning the contacts on the door frame and jam again last night, and he got the door to LOCK using the master door lock at the driver's door, but it wouldn't UNLOCK. To me, if it locks that way, it should unlock that way. Anybody know why it didn't?
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Almost every manufacturer of goods that require manuals has the information available on their company website. Cars, musical equipment, TV, whatever, you should be able to get that info for free. Regarding your rear door lock not opening....just keep checking out the wiring and contacts and pump that cleaning spray on all the electrical connections.
Push Unlock twice to unlock the passenger doors
Puch unlock 4 times quickly to unlock the rear doors
It seems the problem is somewhat intermittent, I've tried trouble shooting it myself by using different remotes and changing the lock settings on the driver information center, all to no avail. I can get the rear doors to unlock while sitting in the drivers seat, start the vehicle, close the drivers door, activate the lock button on the drivers door and repeat the lock, unlock sequence a couple of times and finally the rear doors and hatch will unlock. Anyone else out there equally frustrated?
i am also experiencing this problem, did you find a fix?
how do you take off the door and window switch panel on the drivers side door?
Thanks
The remote control door lock receiver is back in the rear corner garnish molding, but I suspect you're going to need the dealer to diagnose this problem with their diagnostic controller. And they may need to reboot your computer. Take all your keyfobs.
Is your vehicle still under warranty?
I guess the one thing you could/should check, is that the vehicle battery is at full voltage and clean corrosion free connectors.
thanks, John
jwhite@mediatechinc.com