Question about 2001 GMC Jimmy

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4 wheel drive lights

When I turn the 4 wheel drive on in any of the areas other than 2 wheel drive the lights blink and I dont think it is going into 4 wheel drive.

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  • Bozartan Dec 01, 2008

    This morning it was snowy. Every time I put it in the auto 4 wheel the light would blink awhile and then it would go back to 2 wheel. (I don't think it was ever in 4 wheel) Does anybody know about this?

  • Anonymous Mar 21, 2014

    4 wheel drive will not stay in 4 wheel, goes back to 2 wheel, was told it mar be a fuse, where is fuse box

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Vacuum lines my friend. There is one under the battery that pulls a cable to lock the front differentials in. But also check to make sure each line is getting vacuum.

Posted on Nov 09, 2008

I have tried 4 wheel high both ways and low 4 wheel sitting still, I can hear what sounds like the rear gear box locking in low but I dont hear the front, and again the auto 4 wheel drive the 4 wheel high and 4 wheel low just blink.

Thanks Barry

Posted on Oct 27, 2008

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Are you setting still or driving when ingaugeing the 4 wheel drive if you are setting still try putting it in with vehicle moving if it does not light up steady in 4wd then it is not going in 4wd

Posted on Oct 24, 2008

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1 Answer

Service 4_wheel drive light periodically comes on and 4-wheel drive system will not engage or disengage. What could the problem be?


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I had this problem on my 1995 Montero. The 4-wheel-drive indicator lights wouldn't stop blinking when I switched from 4-wheel drive to 2-wheel drive. It turns out that I had a slow leak in one of the front tires. After I fixed the leak and made sure the pressure was the same in both front tires, the problem went away. 
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You could try checking your tire pressures and see if that makes a difference. Hope this helps. 

Sep 06, 2008 | 1999 Mitsubishi Montero Sport

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