Question about 2001 GMC Jimmy

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Gas guage does not work. replaced fuel module in tank still stays on empty fuel lite on

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Three things to check
Pull the plug that goes to the sending unit there will be 3 or 4 wires in it, use a volt /ohm meter set it to dc volts, check and if you have power going to two of the wires, this will be the pump and sending unit power. then set to the lowest ohms setting and check the other wire/wires to see if they are grounded to the frame, you will have to find a good ground on the frame. if you find a bad wire you will trace it back to the short and repair it. If these all check out good then you have to go to the instrument panel. I have had very few guages go bad, usually the most of ar the whole instrument panel goes out instead of one guage. You will have to pull the instrument panel out. Remove the bezel in front of the panel, usually two screws above the panel and the rest pops out. then four screws to remove the panel. Alot/ most of the time I find that the plug is coming out of the panel. I suggest you remove it all the way then plug it back in, do both plugs. If the plugs are mounted on the frame then all you need to do is push the panel back in place. First make sure the plugs are not loose in the frame. If they are resecure them. then recheck the fuel guage. if it is not working you will have to take the panel apart, about a half dozen screws. then you can check the guage itself for continuity. if it is bad replace it. If you need any other help with this let me know.

Posted on Nov 10, 2010


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