Last post on Mar 21, 2013 at 11:14 AM
You are in the GMC Jimmy
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GMC Jimmy, Transmission, SUV
#10 of 71 1997 GMC Transmission Problems
Mar 10, 2008 (10:45 am)
Like so many other people on this board, I am having transmission problems with my Jimmy.
I have searched high and low to find the culprit to what is going on...
Mine is a 1997 Jimmy 4x4. When it is cold outside, the transmission shift hard from 1-2 and takes quite awhile (as well as a low speed) to shift from 2-3-4.
The RPM needle shakes violently back and forth thus preventing the vehicle to obtain speed.
The vehicle WILL shift eventually, but this make going up a slight hill very slow and time consuming.
However, when the vehicle is warm or the weather is even warm outside, the transmission shifts great and doesn't seem to hesitate at all.
Could this be something as easy at the TPS, Ignition related, or perhaps bad plugs?
Help me out here as I am growing tired with this vehicle.
#11 of 71 95 Jimmy trans problem
Apr 05, 2008 (8:36 am)
IF SOMEONE CAN HELP IT WOULD BE GREAT. MY JIMMY WILL GO INTO GEAR WHEN I FIRST START IT UP, BUT WHEN IT WARMS UP I GOT NOTHING. SO COULD IT BE THE TRANSFER CASE OR THE TRANS. ANY HELP WOULD BE THANKFUL.
#12 of 71 Re: 95 Jimmy trans problem [mikeymade]
Apr 12, 2008 (10:03 am)
need just a little more info on your jimmy year is important and fluid condition. normally transfer case will not cause this problem as the t-case is basically a mechanical link converting power to the front driveline consisting of a chain and 2 sprockets and 2 shift forks 1 for 4 wheel drive and the other for high range low range and if your vehicle moves at all you can basically eliminate the t-case as being the problem
#13 of 71 95 Jimmy transmisson
Apr 26, 2008 (9:10 am)
My95 jimmy auotmatic shift from 1st to 3rd gear skipping second .It does the same thing on down shift . It wont work manualy either ,what would be causing this to happen ? The transmisson was working ,it happen all at once.
#14 of 71 Transmission/ Torque Converter Issues :(
May 27, 2008 (6:30 am)
OK guys - bear with me, Im a girl, but not a mechanic and Ive got mechanical issues and need some great advice! Got a 2000 GMC Jimmy 4x4 automatic. Transmission felt like it was slipping or surging. My old mechanic checked it out and said it wasnt slipping, but he thought it wasnt shifting when it was supposed to. He said it was waiting too long to shift gears and would jump in and out of overdrive several times before locking in. He sent me to a transmission specialist who checked it with a computer and the code P1870 popped up. He said it was the torque converter and would charge $700 to replace it. Went to a new mechanic who said to try flushing out the transmission first (146,000 miles and was probably way past due). We tried that - didnt flush out the converter though - they said very little metal in the fluid, it worked great for 2 weeks. They also put some sealant in there that is supposed to seal any leaks. Two weeks later, the same surging occurred and it started shifting harder some, but it doesnt do it all the time. Some times it drive great, no problems. We tried pulling a pontoon boat with it and it doesnt surge then, but it did overheat - no coolant left in it but its disappearing with no apparent leaks. Not sure if the problems are related. Now the check engine light is on. I was planning on replacing the torque converter since that was what was told to me what was wrong with it, but after reading some of these posts on how something small and simple can cause major symptoms, Im hoping I wont have to drop that much money into fixing it, as Im on a budget now and was hoping someone could give me a better idea of what else to look for that may fix it before I spend all that money and my problem still may not be solved. Any help is appreciated : ) Thanks guys Cattt >^..^<
#16 of 71 S15 Jimmy - What tranny do I have & rebuild kit?
Jun 04, 2008 (9:03 am)
Hi. I have a 1990 S15 4x4 Jimmy with a manual 5 speed transmission that went out. If I rock the car in 1st it makes cranky noises like some scraping a bar across gears.
I love this truck! Mechanic says not worth fixing at 187k. I agree ($890) but, If i can find good used or rebuild for under 300 I'm going for it!
What tranny or rebuild kit do I need? Will a 4 speed work? Are there any special tools I need for a rebuild?
#17 of 71 Trany Slippin
Jun 23, 2008 (12:14 pm)
I got a 96 Jimmy 4.3L 4wD Auto, everytime I go on the highway after a good 45 mins my check engine light pops up,but everything checks out and when I stop my truck at a light or something and start to go my first gear roughly goes into second and jolts my truck then after I get rollin it runs smoothly but its just that first gear that sounds bad, but my Check engine light remains on for the whole trip and stays on for about a week then turns it self off. Can anyone tell me whats going on?
#18 of 71 Re: Transmission/ Torque Converter Issues :( [hellcattt]
Jul 30, 2008 (6:08 pm)
there are lots of issues with these transmissions my 2000 jimmy trans failed about 140000 mi which coded p1870 trans slippage.. torque converter usely take care of the trouble but sometimes in the valve body you can have sticking piston.you can fix this without taking tranny out. by the time you pay for the parts and labor and might not fix trouble.. you can go on ebay an buy a rebuilt tranny for about 500 to 600 + shipping. that what i did my jimmy run great pulls hard shifts great. cost me around 800 dollars. but i am a mechanic done the work my self . it would cost around 2100 at a trans repair shop. hope this helps..
#19 of 71 99 Jimmy trans problem
Oct 04, 2008 (5:34 pm)
I have a 99 GMC Jimmy that will just barely take off in drive (whining noise) but it will go just fine if you start out in 1st, shift manually to second then to drive. I changed the filter and fluid. The fluid wasn’t burnt and very little debris in the pan. Still have the same problem! What’s the most likely fix?