I've been having a problem with my 1999 Pontiac Trans Sport, I'm hoping for some suggestions.
Problem:
Both front power windows will "die" every once in a while, sometimes it is weeks between failures, sometimes it will start and stop working a few times within a 20 minute trip. Usually this happens with the windows half down, which is a pain in the #$@! Neither window will function either up or down, from either the driver's side or passengers side control. Occasionally if I push the drivers side window control hard to the second "down" postition (the "auto down" feature) the windows will suddenly function again. When the power windows fail, all other electrics in the car continue to function
What I've done so far:
Replaced the driver's side power window switch module, no change.
Removed the power window circuit breaker in the fuse box and temporarily swapped in a normal fuse of the same rating to see if the breaker was being tripped. No change. Also checked voltage on this breaker/fuse while windows were not functioning and got 13.9 volts with the engine running.
Any ideas? Is there a relay somewhere that is failing? A half broken power or ground wire in the harness? (If so, could someone give me the wire color coding for the connector so I can try and run a new wire?)