Question about 2004 Pontiac Montana

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Bad ground on dash cluster 2004 montana

I think I have a bad ground on my dash cluster. My heat gauge is over the top, fuel gauge is all over the place and my speedo sometimes climbs over the top. I also get shocks exiting the vehicle. I need to know where to start looking for the ground points. Thanks

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Under the left side slider door there are 2 plugs that go up through the floor. I removed and sprayed them with contact cleaner. Problem solved

Posted on Jan 05, 2009

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The dash lights and gauges in the dash are not working properly, gas gauge will say 1/8 and be empty. Periodically they will all fall to 0 on all gauges and stay there till you smack the top of the dash...


Hello it sounds like a ground or connection problem to you dash cluster. I would pull the front driver side dash board appart and unscrew the the instrument cluster check wiring for being loose or corroded at the plugin. if that checks out good no corrosion the instrument cluster itself might have a problem. I seen the instrument cluster go bad before that is probably it.

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It needs a tank meter I'ts in the fuel tank

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take to dealer have them do cluster sweep if fails replace some models are covered under campiagn recall check out at dealer to see if you qualify.

Jan 02, 2009 | 2004 Pontiac Montana

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Gas gauge on 2004 pontiac montana sticks


Before you start your van, and the key's are on accesory. Does your needle move? If it does, your gage is good and you have a bad ground or wire harness. Worst you could have a bad  sending unit and that is in the gas tank it self. Start with checking all the wire connection. Good luck.

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