Question about 2000 GMC Jimmy

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2000 GMC Jimmy will not start

My daughter's 2000 Jimmy has been having starting problems but if you tried several times it would start. It finally stopped starting. Even jumping it will not work. Now the battery is down to where it wouldn't start if it were working perfect. My son-in-law thinks it is the anti-theft lock but doesn't know which wire to cut to disable it. Fuel pump and transmission has been changed in the last 6 months.

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  • sbyrd44 Nov 20, 2008

    Thank you all for your help. I went and purchased a larger cranking battery and it started that night and my son-in-law drove it around the block several times, parked in their driveway, and turned it off. Then he tried to start it again but to no avail. My daughter was able to get it started the next morning and drove my youngest grandson to school so he didn't have to walk in the cold. But she couldn't pick him up after school because it wouldn't start again. He had to walk. We are giving up. We have heard nothing but horror stories since they bought it. We are going looking for a new (used) car this weekend. Hopefully if we find one we will be able to get it started long enough to trade it in. Thanks for all your help.

  • georgeny2000 Nov 28, 2008

    My jimmy 2000 wont star all the time gas pump has ben raplese twuise and thers no gas coming to the injectors batery new as well the starter

    do no what to do some times stars like nex time nop please help

  • molly87 Mar 24, 2009

    won't start when the engine gets cold but after 15 minutes of trying, it finally cranks ad runs fine until i cut it off and the engine gets cold again.

  • www_jmartin2 May 11, 2009

    electrical system is working but the engine will not start I have 96 Oldsmobile Cutlass Supreme

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You'll have to check the charging system, fuel system, or perhaps maybe a relay switch that may control the fuel because those including the fuel filter usually go out before a fuel pump is replaced. And also check the alternator and battery. Hope you fix it.

Posted on Nov 19, 2008

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Hi there,
I came to this forum for information when my Jimmy was acting up and not starting when it was cold, but when it was warm it would fire. After two misdiagnoses from my mechanic (he flashed the computer - didn't work; then he replaced the crank shaft sensor $$$) Third time was the charm: he changed the ingnition switch and ol' Jimmy has been starting on a dime in ALL our crazy Canadian winter temperatures ever since. Wanted to share my solution and possibly save others the search for the mystery problem.

Posted on Jan 30, 2013

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When the car started intermittently, did it run fine once started? There is a possibility since it is a fairly large engine that the battery is not powerful enough anymore to start the engine. If you are using a smaller car to jump-start it, the discharge on that battery could be too little. I can't find any information on the alarm system, but on my car there is a relay that triggers it. Check your fuse box for a relay that you can pull out, as cutting wires is never recommended, especially in these newer cars with their monstrous wiring harnesses. 3 things an engine need to run: spark, compression, fuel. Like stated above, make sure the fuel pump is still working, as there is a chance that is defective, or wasn't installed correctly. Who did the previous repairs on your car? If your mechanic is not trustworthy, they could have easily done something wrong in the installation of the fuel pump. I have a nasty horror story from midas that ended up in replacing the transmission linage cable they broke when installing the muffler, I had to fix the linkage twice once i got it back, once on each end. I took the money to invest in the factory service manual for my car, because the haynes manual did not cover throughly enough. It was 250 dollars, but i got it for 5 dollars on a CD off ebay. I have posted the only manual could find for your car, but it should include wiring diagrams that will help you if it is indeed an electrical problem. Keep us posted. I'm sorry to hear your car troubles with such a new car.
http://www2.partstrain.com/store/?Ntt=Repair%20Manual&N=1623%2010516+4294965606

Posted on Nov 19, 2008

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Don't just start to cut wires. slow charge the battery first. check any and all fuses. if you don't have one, you'll need to get a spark tester. you'll need two people for this test... put the spark tester between the number 1 (one) plug and the wire. turn the key so that the motor cranks and observe the spark tester, if there is no spark it is one of two things. the ignition module and/or the computer. hope this helps.

Posted on Nov 19, 2008

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In a nut shell it may be a good idea to join a auto club like bcaa or aaa they give you a yearly price at 125.00 a year gives you towing up to so many km then pro rated at low rate for extra kms ;they give you roadside assistanc e from flat tire change to jump start and lock keys in car and a whole lot more perks from travel discounts ,ect to house insurance deals,BASIC TEST KEY IN IGNITION DASH LIGHTS UP ENGINE TURN TO ACCESORYTURN TO START /STAR6TER MOTOR SHOULD WORK , CLICK BAD STARTER OR POOR CONNECTION AT BATTERY OR STARTER WIRE NOTHING THEN IF YOU HAVE BRIGHT HEAD LIGHTS AND ALOUD HORN THEN BATTERY IS GOOD , NOW IF YOU CAN START CAR WITH NEW BATTERY AND TURN ENGINE ON WITH ALL ELECTIRCS ON LETS SAY HEAD LIGHTS AND HEATER FAN THEN OFF AFTER 2O MINUTES AND IT WILL NOT START AGAIN FOR A FEW HOURS LATER MORE THAN LIKELY HAVE ALTERNATOR NOT WORKING

Posted on Nov 21, 2008

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