Question about 1998 GMC Jimmy

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Fourwheel drive dont seem to engage on my 1997 jimmy

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The four wheel drive is controlled by a electric actuator that is located on the transfere case

Posted on Dec 10, 2012

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1 Answer

My fourwheel drive is not working, it makes a grinding noise when pressing on the accelerator and only the back wheels ingage?


do you have locking hubs in the front end? if not it could be your trnsfercase accuater not ingageing all the way.

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Switch for the 4x4 will not actuate the fourwheel drive.


IS IT THE 4X4 SHIFT ON THE FLOOR YOU PUSH THE BUTTON IN ON TOP OF THE SHIFTER AND ENGAGE YOUR 4 WHEEL DRIVE I NEED TO KNOW SO I CAN HELP HERE AND IT LIGHTS UP THE AX;E YOU HAVE ENGAGE POHLCAT

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Fourwheel drive works but when i take out of fourwheel drive i have a howling noise in front end but when i put it back in fourwheel drive it goes away


There is a TSB for replacing the IWE ( Integrated Wheel Ends ) solenoid, as the 1st design can ingest water and introduce it to the IWEs, causing low vacuum, and the gears for the IWE are grinding.

http://my.voyager.net/~sscully/file_tsb06_08_15.pdf

To cure this until you get the new IWE solenoid ordered and installed, pull the vacuum lines from the IWEs and plug them. This will leave the IWE gears engaged, so they are not trying round off the teeth.

There are 2 lines to the IWE, 1 is the vacuum line, the other is a vent line, that routes into the engine compartment, with an open end, make sure you pull and plug the correct line.

This will have the front hubs engaged to a dead axle, so it will decrease mpg, and you will feel a bit of loss of power, but better than ruining a set of IWEs that will cost ~500.00 to replace.

Jan 09, 2010 | 2005 Ford F-150

1 Answer

My 1997 jimmy will **** itself into 4wd and wont come out.


There is a vacuum switch on the top of the transfer-case on the driver's side that has gone bad. It's common on out jimmy's and will need to be replaced. Auto Zone or Parts Source will have that part and can give you the step by step instructions to replacing it and take about 15 min to replace. They go for around $25.00 at Auto Zone and $65.00 at the dealers and all you need is a 1 inch open end wrench i believe and patients. It's a tight fit to turn the wrench but you can do it and once loosen, just use your fingers. First disconnect the three vacuum line harness on the vacuum switch and then remove the switch. Once removed, install the new switch and vacuum lines and that's it. Good luck and buy and extra switch and keep it in the glove box. If you push the button for the 2wd, the transfer case will be on the 2wd selection and the front drive shaft will not have any torque to it but the front differential will still be engaged so you can drive it like that till you get a chance to replace the vacuum switch. Good luck and keep warm.

Dec 11, 2009 | 1997 GMC Jimmy

1 Answer

Loud airplane noise in GMC JIMMY


has the clutch fan been tested? was it a very hot day when this happened? if so the electric engaged engine clutch fan may have fully engaged, it will really roar when it does.

Oct 01, 2009 | 1997 GMC Jimmy

1 Answer

Four wheel drive computer clicks when i try to engage 4x4


tap on the 4wd motor on the transfer case while someone is pushing the button, if engages you need a new motor

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DONT SEEM LIKE HAS ANY POWER AT FIRST


You could have a bad cat, or a bad O2 sensor. Also check your intake temprature sensor. that could through off your engine.

Apr 02, 2009 | 1997 GMC Jimmy

1 Answer

97 JIMMY,PUSH 4X4 BUTTON,NOTHING HAPPENS


I had the same problem with my 99 Jimmy. try to disconnect your battery for about 5 minutes and see what happen. it fixed mine by doing it.

Feb 05, 2009 | 1997 GMC Jimmy

1 Answer

Front end pops in and out of fourwheel drive


check for leaks in the vacuum, Jeep used a vacuum switch for the front axle during that time on the dana 30, it may have a leak or just worn where its not fully engaging and lockign all the way. It may not be holding the air as well to keep it engaged. Its a small tube.

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