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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