Question about 1999 GMC Jimmy

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I have a 1999 gmc jimmy 2 wheel drive i can take off with tow haul on drive up to 35 mph then the motor revs like the transmission disengaged what would cause this problem ?

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  • Robert sapien May 16, 2015

    I've taken it to autozone and oreillys had them put it on the code scanner. It came back with a few things that we discussed built it hasn't fixed the problem. . So how wild we know if it's in limp home mode? And what can be done to fix that?

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It's a 99. It's old and tired. You don't have limp mode on this. Your cheapest bet is that the TCC lock up or the temp sensor is bad. Other wise it is a rebuild.

Posted on May 16, 2015

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  • GMC Master
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Have you checked the computer to see if a code is set. It sounds like maybe the computer has it in limp home mode.

Posted on May 09, 2015

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Molson02536
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SOURCE: What type of transmission in a 1999 Jimmy 4x4

4L60E is the type of transmission.

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SOURCE: Check Engine Light came on

get a scanner check code sound like vechicle speed sensor.

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SOURCE: 1999 GMC JIMMY 4X4

2000 jeep classic 4 wheel is not disengaging and has a smell when in 4 wheel

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SOURCE: How to uninstall a blower motor on a 1999 GMC JIMMY

Yeah if you have to tap on it, then that means the brushes in the motor are worn out and you need to replace it. The blower motor is behind the PCM and Coolant Overflow bottle. If you remove these then it will give you better access to motor. You'll have to cut around housing. There should be a groove already there for you, just make sure you don't cut all the way around it. Once you open it and get the new one installed, you'll have to use caulk to seal where you cut it at.

Posted on Dec 20, 2009

  • 1 Answer

SOURCE: transmission tow/haul mode

Hi, the problem is when you are tilting the steering wheel all the way up it's putting to much tenstion on the wires that come outof your shifter that run to the tow/haul button. i am 99% sure your wires are disconected. rewire them and add some extra wire so next time there will be more slack in your wires.

Posted on Jun 09, 2010

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