Question about 2000 GMC Jimmy
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Posted on Jan 02, 2017
SOURCE: on my 2000 chevy S10
vacuum leak or vacuum locker solenoid problem. a great way to check for both is to remove both vacuum lines from the solenoid (located on firewall above destributor), and put a connector between them, push the button on the dash and see if it locks in.
Posted on Jan 21, 2009
I dont know how familar you are with 4wd but have you tried to put it in 2wh and put the truck in reverse for about 15 to 25 feet?Try that and let me know what happens and sounds you hear.Ill also need to know if you have push button or on the floor.
Posted on Apr 27, 2009
I'm not a mechanic, but I recommend getting this in for fixing ASAP... Mine started doing the same thing, except going from 2wd to A4wd... now it is all over the place, I've spent $2000, and I'm still at square one... You don't want to wind up wrecking your transfer case (or the motor on it), as that gets costly!! :) Good luck
Posted on Jan 22, 2011
The problem your are speaking about could be a few things. All things that are somewhat common to go bad on Chevys/GMCs. Each one of the cars I worked on had a different problem. I have changed the switches, the 4wd solenoid, and TCM on different trucks. IMO the TCM location in the passenger kick panel is a poor location allowing water and other passenger debris to get into it. Once water gets in that area you can imagine already what occurs. One of the cars the TCM bracket was rusted by the ground and eventually the weak ground fried it. The weird thing is the TCM would allow it to shift sometimes and not other times or partially engaging causing the wonderful light to blink rapidly. What I have found of some time with these trucks is pushing the button to change the truck to two wheel drive and driving a few feet in reverse helps ease the change.
So you can start with a new switch that pops in and out of the dash in a few mins. Can get one on ebay for under 25 dollars. Although, I personally would take off the kick panel and take a look at the TCM. If you see any rust around it, my money would be on that.
Posted on May 26, 2011
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