Question about 1997 GMC Jimmy
I WAS DRIVING IT AT ABOUT 38 MPH AND PUSHED THE BUTTON TO TAKE MY FORD F 150 OUT OF 4 WHEEL DRIVE. I HEARD A GRINDING THEN A BANG NOW THE 4 WHEEL DRIVE WILL NOT ENGAGE. IF I PUSH THE BUTTON FOR 4 LOW I CAN HEAR IT GO INTO LOW GEAR BUT IT WILL NOT BE IN 4 WHEEL DRIVE NO SHAFTS SEEM TO BE BROKEN. COULD THIS BE A CASE OF THE ACTUATOR BEING DAMAGED BY TAKEN IT OUT OF 4X4 AT TO HIGH OF A ROAD SPEED.
This sounds like the auto locking hubs have gone out. They will sometimes make a ratcheting noise and then seize up. This time of year especially with the colder weather they will lock up when the grease gets old and hardens. The best thing to do is to replace them with a nice set of Warn manual lock-out hubs. There are some special sockets you will need to do this repair so it might be best to take this one to a shop.
Posted on Dec 27, 2013
Changing it from any 4wd selection at high speeds is not a good idea in tyhe first place.. only speeds under 15 mph are good to shift on the fly..this damage will be expensive to repair..hard lesson learned..
Posted on Dec 27, 2013
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Posted on Jan 02, 2017
I just fixed a friend of mines 96 yukon...shift to neutral press 4H and u can hear the actuator make noise (we even replaced it with a new one his idea and the same thing happen as old one), so as he hit the switch for 4H i layed under it (on 4 jack stands) and I could hear the motor on the transfer case make a loud noise (well thats working) and before all this I asked him did u check all your fuses (he said guarnteed to be all good) one night it was bothering me so i looked through the owner manual for the yukon and in the fuse box on driver side by the door there are (2) fuse for the 4wheel drive unit,pull one of the fuses good...pulled the other one and it was blown put in a new fuse and it works like brand new..pull fuse for anything that has to do with 4 wheel drive componants,
Posted on May 03, 2009
Check the switch on the transfercase remove the vacume lines if there is oil in them the switch has to be replaced and the lines should be cleaned out you should also check under the battery tray to make sure the boot is not ripped that controls the leaver to engage the front axel
Posted on Feb 16, 2009
try going into reverse for 10 feet then go to drive for 10 feet that might help if not it is to the wiring to you 4x4 engage system (wires to your wheel hub)
Posted on Jul 04, 2009
I had the same problem with the shift on the fly push-button 4x4 on my 97 Suburban. GM Shop manual indicates that it could be due to an encoder error on the actuator motor. Try pulling the transfer case fuse to reset the transfer case control module. Wait at least one minute. Re-install fuse then re-try operation. Did it last week and that saved me a trip to the dealership and extensive troubleshooting.
Posted on Jan 03, 2011
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Dec 19, 2013 | Cars & Trucks
these issue, there are few solved help links for troubleshooting the
the link below: ---
control switch will not engage on 4WD High or Low
flashing and 4WD will engage after few minutes
details will help.
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