Question about 2000 Pontiac Montana
Manual window crank changeover would mean a different regulator and door panel for each door. It's very common for the wire harness between the A-pillar and the door frame have damaged wires, particularly the system ground wire.Really need to check that circuit! You can supply your own ground to the switch and recheck the operation just to verify and eliminate the harness as an issue.
If you have full battery voltage and a good ground circuit to the pin connector on the master window switch, then it's probably just the switch and the dismantler near you should have one for less than $20.
Posted on May 06, 2014
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Posted on Jan 02, 2017
the sliding doors on montana assuming there power have a electrical harness on the bottom track that break and jam the doors but unlikly both have this problem do the doors lock @ unlock if not check switch at drivers door
Posted on May 27, 2009
Verify the wiring harness which passes under plastic step & carpet at front passenger side. This wiring harness goes from the firewall to the pillar on the right side and some have crimped connectors in them to act as junction between two or more wires (ususlly the 12volt feed), which deteriorate with time, especially with Salt & Water. Then the electric sliding door stops working and even driver the electric seat can loose power.
Posted on Jun 07, 2009
I had a 99 with the same problem, and suggest you check under the passenger side front carpet. Remove the flat door kick plate, lift up the carpet on the front passenger side floor and you will see a large wiring harness running along the floor, wrapped in black tape. Water and salt gets into this harness and will rot out several wire splices that you will see. Look for wires that run from 2 wires down into one (under black tape.) These are spliced together, and rot out. There was several large gauge wires/splices(windows up and down) and I think 2 very thin wires/splices (lock/unlock) . Even if the wires look connected, give them a good tug, they will come apart and be green with corrosion. This is a very common problem and worth the effort to check out. Repairing these splices fixed both the power windows and locks at the same time. Good luck
Posted on Aug 15, 2009
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