I have a 2001 GMC Jimmy, 4WD with 4.3 6cyl engine. It only stays in 4WD Lo.

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When you press the 2WD button, it will only blink and then stop blinking. The 4WD light stays lit all the time and won't shift out of 4WD period. I have replaced the 4WD actuator to no avail. What else could be the problme? (At first, it would do this intermitantly and always go into 2WD after a couple of minutes, not it won't.)

hdstonemeister in Richmond KY

Aug 17, 2011

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What is your question?

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I have a 2001 GMC Jimmy, 4WD with 4.3 6cyl engine. It only stays in 4WD Lo.

What is your question?

hdstonemeister in Richmond KY

Aug 17, 2011

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danddon Aug 18, 2011

You have to make sure that the the switch is telling the actuator to change modes. Then if the actuator is getting the correct signal and you have installed a new factory actuator, then the transfer case needs to be torn down,inspected and repaired.

hdstonemeisteron Aug 18, 2011

I have checked the switch, (inside the cab), and it is working correctly. Someone told me that the transfer case motor may also be the problem, but I am unable to get to it, so I am not sure. Thanks for the help.

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Popular Answer

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2001 GMC Jimmy. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.