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Thanks - Dave
Edit : I did another site search - and it looks like I may have to replace a relay board... will see if my mechanic will do this for me.
No surprise at all! Common problem which has been discussed several times on this site.
Basically.....tail light(s) plugs (Pig Tails) were sub-standard and cannot stand the heat of the bulbs. Pull out hear tail light fixtures, remove bulbs from recepticals and check for melting plastic, usually between the black wire (hot wire) and one or more colored wires. If so, cut out old Pig Tail, get a replacement Pig Tail, soder it in (I think about 6 wires), and use electrical shrink wrap around sodered joint, install new bulbs using Di-electric grease in the socket. Test before reinstalling light fixture.
Jack
I forgot to mention.......................the plug short can cause electrical feedback...might show up as turn signal lights, ABS, Air-bag, and TCS errors!
Jack
Charlie
Alabama
Jack in Colorado
For all of you who have had problems with DEX COOL (including me) in Pontiac Montana engines (and the other 2 GM sister mini-vans, and several other GM cars and trucks Buick, Chevy, Olds, Pontiac), there is a proposed CLASS ACTION SETTLEMENT. GM does not admit any problems, but it looks like they will have to reimburse effected owners.
See this web-site:
http://www.dexcoolsettlement.com/
Jack ....in Colorado
Jack
Your problem lies with one of the two window switches. Most likely, the drivers side.
I have had to replace the switch twice. Approx: $80
The switch alternates the 12v and ground signals to the passenger switch, then the passenger switch alternates the signals to the motor.
I had to get electrical drawings to figure the wiring out.
The enclosure gasket fails & moisture gets in and contaminates the board.
Corrosion between the cicuits causes all kinds of wiper symptoms.
I removed the enclosure cover & circuit board, flushed both sides with a mixture of baking soda, scraped any noticable corrosion away then rinsed the board well with isopropal alcohol. That fixed it!
On my 1998 Pontiac Montana Transport I found that they ran the electrical harness from the drivers side rear interior panel (near the rear A/C unit), down into the steel frame support beams. They are hollow and when your vehicle develops leaks near the rear hatch, water collects inside the beams and never leaves. The harness ground and +12v wires have soldered wire junctions that are located inside the beams and the connections begin to rot away due to the collected water.
Soon all forms of electrical problems develop because devices are no longer getting +12v or ground from the battery. I had to pull the harness out of the beam and rewire the +12v & ground connections.
One other thing you can do to make sure this doesn't happen again. is spray the board after cleaning with clear acrylic paint. This will seal the board from the elements. This is a good thing fro all other componets you have in you car. BCM, door locks, ECM everything.
My new Montana problem this week is a rear windshield wiper that starts and stops, clicks, moans and sputters. Perhaps another electrical short? The NTSB web-site lists this as a known problem....caused by electrical shorts.
Has anyone else had this problem?
Jack
Nothing surprises me about this vehicle...
Jack
Jack
Jack
David :mad:
https://msofs.mssociety.ca/2009walk/SponsorTeam.aspx?PID=1072373&L=2
Cheers, Kennie
Jack
(no current going to pump) no spark on the spark plugs and when I connect my OBD2
scanner to check on any codes I get a "Link Error" message on my scanner.
I checked the pump by jumping a positive wire to it and it'll work.
I have a new spare computer and installed it only to get the same results.
I have never gotten the "LINK ERROR" until now and I would like to know how can I fix it. Could it be a bad wire? Bad ground?
I need to try to fix it and would appreciate any advice and/or assistance
Any help would be greatly appreciated.
Patrick
Sorry, but I deleted all that stuff when I sold the Montana 3 months ago.
Jack
I have a 2004 Pontiac Montana and am having serious problems and wondering if someone can help....I had a mechanic trace all the wiring harness and has not found the source of the problems. First thing to happen was the passenger power window stopped working (worked intermitt, now stopped completely), then the chime (as if you had key left in the ignition) would come on even when there was no key in the iginition but when you started the van it would go away so I was not too worried about it.... Well for the last week, the interior lights will stay on unless I use the override switch, none of the power windows or locks are working, when you turn on the turn signals the power locks start clicking to the beat of the turn signals and the key chime is constantly on....it will not go off even though all doors are closed and key is out of the ignition.....Thanks for your help
Zelda
Thanks for all your help... the mechanic is going to check the wires from the computer today and if that fails I am going to bring her into the pontiac dealership and see if hooking it up to the scanner can show anything.....It could very well be the ignition because thats what the problem started with (the passenger window) and then the key chime.... I will let you know what they find so hopefully if anyone else has the same problem in the future they know what to do....on a positive note I know there is nothing wrong with the wiring harness...lol... ONce again, thanks again for your help......
Zel
I had the exact same symptoms as everyone else with what looked like a wiring problem. Speedo and Tach erratic, shifting problems, no engine power, driver information warnings. Checked out the Tail Light wiring...All like brand new!
Problem turned out to be a bad regulator in the alternator. Instead of NOT charging, the system was driving battery voltage past 21 volts causing systems to shut down to to over voltage. Easy check for this is to monitor the battery voltage while revving up the engine. Voltage should NOT exceed 16 volts. Mine was 19 volts at idle and went up from there with engine RPM. Replaced alternator and all systems now work perfectly! Don't get yourselves off on a wild goose chase!
Just an FYI...
Ken
I see from your post that you've had power window problems. Both front windows on our 99 Montana no longer operate. The dealer quoted us over $300/window to have the motor replaced--that's w/o even looking into it. How did you repair yours? I see that you can buy window motors on A1 Auto.com. What would you recommend. Is it necessarily the motor?
Thanks for your help!
Susan
If you take it apart yourself, do some electrical testing to see if it's the motor or the switch.
Good luck.
Jack
My problems are all intermittent - seems that everything is working better than ever now for the last 3 weeks or so... tested the battery but all seems to be fine..the only thing that won;t work is the power window on the passenger side and that I am not too worried about... everything else seemed to start working after I noticed that the rear tail light had burnt out and I removed the bulb and then things started working again - so I have yet to replace the bulb,,,lol...afraid that it will stop working again.. its a wait and see process - gonna wait until everything decides to stop working again and then I am gonna test the battery again because someone mentioned that maybe its a bad regulator in the alternator... as for now I am gonna keep my fingers crossed that everything keeps working.