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SUVs GMC Jimmy GMC Jimmy 4WD Problems
203 messages, Last post on Dec 02, 2009 at 6:53 PM
You are in the GMC Jimmy Forum. Your Hosts are steve_ & tidester
| I have to replace transfer case vacuum switch on my 99 jimmy which is located on the transfer case under the vehicle but do not know where it is located. Anyone have any idea where it is located or where I can get a diagram of the transfer case? Was told by someone they believed it was on top of transfer case. Haynes repair manual does not give diagram. | |
| My GMC Jimmy is a 4 button system with Autotrac. I just noticed that the front driveshaft is still turning in 2wd. I have checked the front axle and it is disengaged. I even put the transfer case into Neutral and the front and rear drive shafts are still attached? I've checked all functionalities of the transfer case motor and it seems to be working fine. Also, no flashing on buttons, everything seems to be operating normally. I'm just wondering if this is normal. I checked with a '98 Jimmy 3 button 4wd and the transfer case detaches the front drive shaft. I know this is a different transfer case so I'm wondering if this is normal? | |
i recently bought a 75 Jimmy 4x4.. it has a couple leaks here and there but i continue to make sure i have fluid in everything.. the issue im having started about 3 days ago- ive been driving it for the last month and everything was fine, drove very smooth, but now wen im going about 15-40mph it starts to vibrate and gets worse the more i get on the gas. but wen i get past 35-40mph it stops vibrating and drives great like before.. i have no clue what it can be..if you have any tips for me i would love to here them, please email me at whyteboijon yahoo.com thanks for reading and replying, Jon |
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Hi, Any info would be greatly appreciated on this scenario I have. Just had a bunch of stuff done to the 4x4 on my 94. Just had the transfer case swapped out known good one,transfer case switch, vaccum actuator. Did this because the actuator ( I believe it was this one) was sucking tranny fluid from the trans any putting in transfer case. My bro in law has been a mechanic for 20 years and never seen this before. Removed acuator on transfer case and tranny fluid literally shot out like it was over filled by 2qts or more. So everything was replace except the switch on the dash. Coming home from picking it it was fine,2w was no problem. I went back out a few minutes later and go to the top of my street to pull out and you can here a small click kinda noise come from underneath near the transfer case when I was almost completely stopped. I go to pull out and it like its in 4wheel hi by itself. Takes up to 2000 rpms to get out of the street to the main street but drives fine when up and rolling but still at like 2000 rpm's to take off from a stop light. This was happening before everything else was replaced. If you turn it off and wait say a hour or less and come back out to drive its in 2 wheel drive again without touching anything. Main question is is it possible the switch on the dash is falty and able to engage 4w when the jimmy slows down, only does this after you are at a stop like a traffic light. Kinda annoying and don't want to ruin anything. 4wheel low works now with the newer transfer case. 4w hi I'm not sure being it won't go into it with the greenlight showing from a nuetral position while stopped. Does it have to be rolling to engage hi? Thanks for any help, Dan
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Replying to: dan94jimmy (Feb 21, 2009 12:57 pm) |
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Replying to: kbzook (Jan 10, 2009 4:15 pm) I have the exact same issue. Did you ever find out what it was? Ryan |
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| I have a 98 Jimmy that is stuck in 4wd Hi, although the front tires are not engaged. My problem is stated exactly in a previous question #172 & 174. The dash 4wd Hi light blinks when attemting to go into anything else but then just stays in 4wd Hi. Without stating the same issue over and over please read question #172 and if any one is able to pass on some advise that would be greatly appreciated. | |
| I have a 99 Jimmy was working fine and now 4wd won't engage. 4wd service idiot light came on. One min all lights are on the dash switch, next time none, and then maybe just the 2wd light. Changed the dash switch (with auto button), change actuator and actuator switch and hoses to actuator. Don't know if it is tccm. Does anyone know if the tccm switch is suppose to make a clicking sound when vehicle first starts? Mine does. Is there anyway to test the tccm switch? Any help is appreciated. | |
| i have a 96 jimmy, when you push the 4hi or 4lo the transfer case will lock in, but the front wheels will not pull. the vac. thing under the batt. always pulls on the cable even in 2hi it never release unless you pull off the vac hose. i have tried to pull more on the cable but it seems to be as far as it goes. im lost on this one this is the first 4wd i have had like this one. plz help thax | |
| My Gmc Jimmy keeps cutting off on me, I can be crusing on the hwy, road and it will just shut down. I will let it sit apprx 30 sec - 1 min and it will start back just fine, but will cut off on me again, seems like when I press on the gas pedal it acts as if the gas is not getting to where it needs to go (when the truck cuts off the signal I get is the battery light comes on) it did this also before I bought a new battery. I have a also replaced the fuel filters and the multi fuel port injectors. Can someone please advise this woman on her vehicle before I spend another dime on it. | |
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