It's electronic, check all fuses, also check the connection to the transfer case.
Try listening to the transfer case try to engage. Mine did not engage after an engine wash. The vacuum actuater on the firewall above the distributor was not allowing vacuum to the front axle actator. You can put the truck on jackstands (all 4 wheels) and check to see if the front drive shaft engages. If so, then it's probably the vacuum actuator or the axle actuator.
My 2000 GMC jimmy had 4x4 issues. Were it would intermittently work. After numerous attempts to fix it. I found out that the control module has a metal shell which create a lot of moisture and causes corrosion which lead to the heart of the problem. Here is some home made steps I took which ended up fixing the problem.
1) check that your vacume lines are not dry and brittle, if so replace...cheap fix
2) check the vacume actuator under the battery case. If free and working its OK
3) there is a sensor on the front axle that tells the TCM if it is engaged or not . Make sure it is tightened properly. Mine wasn't.
4) the TCM on the passenger side has a connector issue. With a second person switching it in and out, wiggle the connection to see if it is loose. If so zip tie it . You will hear it engage and disengage.
5)check and clean the vacume valve on the transfer case. This. Should be part of the vacume lines.
no it wont hurt the jimmy
It could either be a problem with your 4x4 switch in the cab, the actuator that connects the front right axle shaft to the drivetrain, or the transfer case itself not sending power to the front driveshaft.
The transmission lines on a 2000 GMC Jimmy 4x4 are replaced by disconnecting the lines at the radiator and then the side of the transmission. They are then removed from the bottom of the vehicle and new lines put in place.
If they are vacuum operated then it could be the hubs.
You just ask a redneck how!!
2000 jimmy 4.3ltr v6. were is the o2 sensor bank 1, sensor 3
YOU GOTTA PUT IT IN PARK THEN HIT YOUR 4X4 SWITCH TO EITHER 4 HI OR 4 LO
the freeze plugs on the side of the motor could be done.
a temporary fix is to disconnect the positive battery pole from the battery for a few seconds. then reconnect, it and try to engage 4x4 again. this used to happen to 2000 ranger 4x4 that i drove for work. only thing was that it would hardly ever go into 4x4 LOW. good luck
place car in neutral , then bring lever down to 4hi position , then put car in drive.
How do you change a 1998 jimmy 4X4 front wheel bearing ?
To engage the 4x4 manually (VTM-4), you would need to be in 1st, 2nd, or reverse gear. In those gears and while stopped, you can then press the VTM-4 button, and will engage 4x4. It will only be engaged when around 18mph or lower. Above that, and it will disengage. It will re-engage when it dips down to that speed again. To turn it off, you can just press the button, or shift to a higher gear Keep in mind that even with the button off, VTM-4 will engage occasionally when there's slippage.
Your 4x4 fuse probably blew out.
Lock your hubs and put the car in neutral, then push the 4X4 button, same thing with low range
Drop down to lower gear G2 or 3 and then press 4x4 button
Are you in neutral ? No in reverse.
turn on the engine, shift into neutral, engage the 4x4, shift into drive.
To engage the wheel for 4x4 operation, the selector should be set to the "Lock" position.j3h.
You pull handle back into 4wd.
Vacuum hose disabled.
You pull handle back into 4wd.
The gear ratio of a 2001 GMC Jimmy 4x4 is probably 3.73. The ratio is listed on a plate in the glove compartment on most models.