Question about 2001 GMC Jimmy

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2001 gmc jimmy 4wd

I have a 2001 gmc jimmy 4wd It was stuck in 4lo so i took it to a shop and bought a used 4wd motor mine was fried from a pinch wired now it stays in 2hi and occasionally the 4lo light flashes today i attempted to shift to 4hi but it wouldnt shift it would shift to auto hi and from auto 4hi to 4lo then it would shift from 4lo to auto but not to 4h then it took several attempt to get back to 2hi it wouldnt go to 4hi at all whats up with this 4wd.

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  • jiansaltar May 17, 2009

    I dont think so all i know is that i change the motor that attaches to the transfer case.

    Thanks for the info what do I need to do from here to rule the module out.

  • jiansaltar May 19, 2009

    Thanks carhob Ill give it a try Ill let you know how it turns out

    thanks again.

  • carhob May 11, 2010

    let me know! regards

  • carhob May 11, 2010

    undo kick panel unbolt module unplug connector look for corrossion in plug and module pins,if corrosion is mild clean corrosion off,it should work ok,if corrosion is bad and board is damaged may need new 1,

  • carhob May 11, 2010

    did u check control module on passenger side behind kick panel,the elect. connector becomes corroded and will start making weird problems.



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Posted on Jan 02, 2017

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SOURCE: jimmy wont lock in four wheel drive.

You need to see if the transfer case engagement motor is defective.

Posted on Nov 21, 2008

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SOURCE: My 98 chevy blazer won't shift into 4wd.

Most common problem is the vacuum diaphragm that is so inconviently mounted UNDER the battery tray.The cable that locks in the front diff is attached to it and vacuum pulls it in/out.

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SOURCE: service 4wd light

what causes the 4wd to kick in when you have it in 2wd

Posted on Apr 05, 2009

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I dont know how familar you are with 4wd but have you tried to put it in 2wh and put the truck in reverse for about 15 to 25 feet?Try that and let me know what happens and sounds you hear.Ill also need to know if you have push button or on the floor.

Posted on Apr 27, 2009

  • 1 Answer

SOURCE: My 1996 full size chevrolet tahoe will not go into 4wd

check the solenoid on the front differential. i had a similar problem. when i would start to engage 4wd low/high and it would blow the fuse. i replaced the front solenoid and fixed my problem.

the solenoid can be found in the right side of the front differential. costs about $100 at local part store and takes 5-10 to changeout with an adjustable wrench.

Posted on Nov 12, 2009

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