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Replacing the electric 4wd actuator on a 2001 gmc jimmy?

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Remove the fastener bolts pull out . sometimes you have to twist easy job

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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2004 envoy 4 wd quit working


I had TONS of issues with my 2001 Jimmy 4wd. A few things to check; the 4wd actuator switch, the vacuum switch, hub assembly, and the electronic 4wd dash switch.

Apr 19, 2014 | 2004 GMC Envoy

1 Answer

My 4wd doesn't engage at the front axle


on my 2001 jimmy i had the same problem i fixed by changing the actuator on the front diff very simple and inexpensive

Feb 23, 2012 | 2000 GMC Jimmy

1 Answer

2001 GMC Jimmy 4WD. It wants to kick out of 2wd Hi and sounds like the gears are grinding. I have to put it into four hi to get it to pop in and then stop and put it back into two. Changed the actuator and...


These somtimes have problems with wirering at connection for 4wd modual. It should be located in pass. side kick panel. Wiggle wires and connector and see if problem occures. Problem sometimes located in connector.

Apr 08, 2011 | 2001 GMC Jimmy

1 Answer

I just bought a 95 gmc jimmy 4.3 vortec with 4wd and underneather on the frontend differential there is a bar sticking out that is welded to stay out and my jimmy will not go into 4wd at all why and how do...


I don't know what the bar is for, but I can help you troubleshoot the 4wd. I have a 1996 4wd Jimmy. The 4wd didn't work when I bought it. Here is what I found. The vacuum lines at the rear of the engine compartment were soft and gummy and some were rotted. I replaced every vacuum line I could find. Hidden underneath the battery tray is a vacuum operated actuator that engages the front axle. This line was not connected at all. I popped the push button assembly out of the dash to make sure everything was connected and replaced the light bulbs. Installed the switch back in the dash and went for a test drive. Everything is now working as it should. Did the testing on a dirt drive. Never on dry pavement. There are also electrical connectors underneath the vehicle that must be checked. They are attached to switches on the transmission and the transfer case. Let me know if this helps you get your 4wd working again.

Dec 25, 2010 | 1995 GMC Jimmy

1 Answer

4wd will not engage on my 2001 gmc jimmy


Try listening to the transfer case try to engage.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.

Dec 23, 2010 | 2001 GMC Jimmy

3 Answers

2001 jimmy stuck in 4wd low


Usually when a truck gets stuck in 4 low you need to put it in reverse, start backing up very slowly, put it in neutral (or push in the clutch on manual trans models) and stop the truck with the brakes. this will release the load on the gearing which should allow you to shift out of 4 low.

Feb 15, 2009 | 2000 GMC Jimmy

1 Answer

Unable to put my 2001 GMC Jimmy in 4wd


fuse! I bet it is the fuse.does it flash and try to switch?

Dec 17, 2008 | 2001 GMC Jimmy

2 Answers

2000 GMC Jimmy Transmission Whine


Does it sound like a loud winding sound coming from the front right side? I have a 2001 Jimmy and the 4wd tries to engage when driving up steep hills and going at highway speeds. The actuator vacuum switch engaged when the transfer case vacuum switch sends the vacuumed air to the actuator. What is happening is their is either a leak in the vacuum lines, a faulty actuator switch, or a faulty transfer case vacuum switch. When the jimmy has enough air pulling in, the extra vacuum is trying to push the actuator switch in when it is not supposed to. It is a much cheaper fix than a transmission. GMC should have recalled the whole 4wd system on any of the S10's, the JImmy's, and Blazers.

Jul 30, 2008 | 2000 GMC Jimmy

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