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Chevrolet Blazer GMC Jimmy Transmission Problems

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  • duntovduntov Posts: 133
    I had a auto repair shop remove, rebuild and replace the transmission in my 1998 F-150 Ford pick up and it cost $1600 including a new torque converter and I thought that was a little high. I paid it anyway because the shop was recommended by a person who had a transmission replaced there. The cost of removing, rebuilding and replacing any model of passenger car or pick up transmission is about the same price. A price of $3,000 is far too high. You can do better than that at neary any repair shop. I have never heard of a rebuilt transmission costing more than $1800 including a new torque converter. The additional labor cost for removing and replacing a transmission is from $200 to $250.
  • i have a 1987 gmc jimmy full size that i was driving down the road and will not shift out of first gear.have checked the fluid, changed the filter and unhooked the battery to see if i could get the computer to reset.can anyone give me some advice on where to start to fix the problem.
  • was wondering if you found out what was wrong with your jimmy,i have an 1987 jimmy doing the same thing.i read on here to disconnect the battery for about 10 to 15 minutes sometimes its in the computer.let me know if you found out what your problem was. thanks.
  • mkc716mkc716 Posts: 2
    As it was explained to me by a mechanic, there are stainless steel rollers in the transmission that roll up and down on a 'track'. The 'track' is made of aluminum, the rollers have carved out a groove and are now stuck in this. I had to trade mine in, he said I would have to replace the transmission. Which I didn't have the money for. This is also a common 'problem' with GMC and Chevy Blazers.
  • I HAVE A 2000 BLAZER 4X4 2 DOOR ZR2. I JUST REPLACED THE TRANSMISSION. IT WORKED GOOD FOR ABOUT AN HOUR. WAS DRIVING IT DOWN THE ROAD PUSHED ON THE GAS TO PASS SOMEONE AND IT JUST STOPPED. THE TRANSMISSION WONT GO INTO GEAR NOW. POSSIBLE PROBLEMS?
    2 hours ago - 4 days left to answer.
    Additional Details
    ITS THE AUTOMATIC 4L60E
    2 hours ago

    WHEN I SHIFT IT THE LEVER MOVES INTO ALL THE GEARS BUT WHEN ITS IN GEAR IT DOESNT GO ANYWHERE.
    2 hours ago

    AFTER I INSTALLED THE TRANSMISSION, I DROVE IT FOR ABOUT 20 MILES, IT SHIFTED REALLY GOOD, SMOOTH. AND THEN I STOPPED, AND DROVE ABOUT A BLOCK WENT TO PASS SOMEONE, AND THE TRANSMISSION JUST STOPPED. I PARKED, TRIED ALL THE GEARS BUT NOTHING. I LOOKED UNDERNEATH, I SEE THE FLYWHEEL AND TORGUE CONVERTER TURNING CHECKED FLUID LEVEL, SHIFTS INTO ALL THE GEARS BUT NOTHING HAPPENS.
    1 hour ago

    WENT OUT DISCONNECTED BATTERY FOR TEN MINUTES STIL DOES SAME THING, ALSO CHECKED TO SEE IF FLUID IS GOING THROUGH THE TOP LINE INTO THE RADIATOR, NO FLUID BEING PUMPED... ANY IDEAS???? PLEASE HELP
  • I have a 1997 Blazer the started shifting weird about 2 weeks ago and had a weird vibration starting off and slowing down and finally wouldn't move past 2nd gear. I have up to aprox. 25MPH and then it just slips can keep it barely moving if you run at a high rpm. If I stop and start again I can get up to 25 mph and then it goes again. After this started transmission fluid was really low but there is no leak anywhere on the ground. Reverse is fine. Prior to this happening (for a few months before) we heard a hissing noise but we find no leaks of vacuum or fluid. Any help is really appreciated. Thank you

    TCC was replaced still no luck.

    It is the 4L60E transmission.
  • I have a 98 Blazer and it was parked for about 8 months when I parked it everything was fine. Now when I drive it, the transmission shifts through all of the gears and when it gets to overdrive it shifts in and out constantly and the tachometer jumps all over the place from 1400-2100 RPM at 50-55 mph. I checked the tranny fluid it is full I don't know if this tranny, 4L60E has an electrical lockup converter or what, or am I looking at replacing the tranny. the Blazer has 163,000 and runs great. any help or ideas would really be appreciated, thanks.
  • i have a 1997 s-10 blazer one night after work i got in it and it wouldnt start i got it to start but now i have no radio and my air bag light is on ,my speedo dont work and its hard shifting out of first gear itll shift if u stick it to the floor. i found a blow fuse that fixed the airbag light but still have no speedo or radio or any go power
  • I have a 97 blazer for four year and have had no major problems til now.It started when it would rain it would idle high and not shift.Ive put new cap rotor wires and plugs.She ran fine but today I got in and she runs great but now when you come to a stop and take off she doesnt want to move.After she gets moving she runs fine but doesnt do it all the time just once in awhile.Is that the tranny going out or what could it be.Thanks for any input.Dont know what to do next.
  • Hello, I have a 1997 S-10 blazer, 4.3 v/6. I have had it a couple of months, the mileage is just over 163,000. The tranny has been shifting fine but this morning the check engine light came on and the tranny did not want to down shift back into first gear. I could manually shift fine. I talked to the guy I got it from and he said it had done the same thing. He changed the fluid and filter less than 1500 miles ago. It then sat for about 6 months and the battery was dead when I bought it from him. I read the other forums and disconnected the battery and let set for about 30 minutes. The check engine light is gone and it shifts great. I would like to know what I can do to prevent this happening again. Thanks, Ricky
  • My 1996 Chevy Blazer's check engine light came on and read for the shift solenoids. So i dropped the pan and replaced all of the solenoids along with the Manifold Pressure Switch, Internal Wire Harness, all Check balls, and put a new transmission filter kit and now it will not shift into any gear at all. If anyone has any idea on what i could of hooked up wrong can you let me know. And i am pretty sure i hooked up the shift linkage right and never touched the clutch
  • If you changed the torque converter lock-up solenoid too then you possible installed it 180deg out or you put one of the check balls in the wrong place.
  • OK thanks i will have to try the torque converter lock up solenoid i am sure all the check balls are in the right place have a map of the vavle body that shows where they go
  • I dont know if you received an answer yet but i had this same problem with my blazer... mine was parked for about 3 months because the motor blew up. Anyways there is a SPS shift position sensor on the transmission that goes bad and cause it to do this. Mine did the same exact thing yours is doing.
  • Engine, Transmission, Transfer Case, and PCM from a Totaled (rolled a few times) 1997 (red) Blazer, have been swapped over to another 1997 (brown) Blazer. The Transmission had a remanufactured sticker on it, so I suspect it was lower mileage and in good condition. It certainly had clean fluid in it, when pulled. The truck was driving on the highway when rolled.

    The engine would not start on the Brown Blazer and was found having low compression on a couple cylinders, which is why the swap was performed. After several headaches and setbacks, I was able to get the engine started yesterday. However, the truck will not move in forward, or reverse. Another (minor) setback; the shifter will not shift out of Park, without depressing the bypass switch physically located on the shifter assembly (thanks to whomever identified that in a previous post).

    So, I can; start the engine, run up to 4000, or so, rpms, bypass the shift lock and enter all gears. The truck goes no where, the engine doesn’t seem affected by any gear shifting. I can tach 3500 rpm and shift thru all gears with absolutely no movement of the truck, or hesistation of engine rpms. It feels like the engine isn’t even connected to the tranny. I suspect the tranny, torque converter, wiring harness to the -transmission, or –PCM, Vacuum Issue, or perhaps something else to be the culprit. Anyone know what causes this tranny to engage in gear?

    Yes, there is plenty of tranny fluid and it looks good. Yes my brake lights illuminate when depressing the brake pedal, I hear a relay under the dash or console, when I step on the brake and try to get out of park, but the button won’t fully depress. I don’t think this and the lack of tranny movement are related, but not sure if there’s some switch in there that could cause this to happen. No relevent PCM codes. (I think one was for an O2 sensor, the other was engine related, but I'll have to double check).

    It's to my understanding, to get a transmission trouble code, it must complete a bunch of requirements, such as send 12v, and ground, and so forth. If not all these requirements are met, then no trouble code will be issued. If I have a broken wire, I suspect all the requirements might not be met, and the truck will not throw a code. I'm not sure though. I've had very little luck accessing any diagrams. (free, via link, or whatever). I have a Chilton, but that's sorta helpless at this stage.

    A previous set-back, was a pinched wire harness going down to the transmission. I reconnected all those wires with butt connectors and that fixed one of my problems (couldn’t crank engine; neutral safety switch wire was pinched). Tranny also, has a new neutral safety switch.

    Also have a mystery wire off the PCM that’s been cut (brown blazer), with speaker wire spliced into it. Not sure what it was, were it went, or anything else about it, but it’s been disconnected. I’ve reconnected it, but still that helps nothing. The truck was like that when I purchased it, so I don't know if this could be a preexisting problem.

    Does anyone have a diagram available, of the PCM wiring? Transmission Wiring? Can a wiring issue prevent my transmission from locking up (if that’s the technical term)? Does anyone know what wires coming off the PCM go to the tranny?

    Suggestions anyone? Thanks
  • HI I have the same problem can you tell what fixet your blazer.

    Thank You
  • HI Can you tell me what was wrong what your blazer my blazer is doing the same thing.

    Thank You
  • I just posted that today. I'm not in a hurry, but I'll get it fixed sooner or later. If you get yours figured out, holler back. let me know.
    :o)
  • Still haven't fixed it yet, but I got some additional info. Not sure, but I hope I'm on the right track.

    I suspect my shifter, or at least a switch on the shifter has gone bad. I suspect it is, or is part of, the BTSI switch (brake transmission shift interlock). I believe, but am not certain, that a signal from this switch, goes to the PCM, which then sends a signal to a solenoid in the transmission. This solenoid operates an exhaust valve, which is normally open. While open, tranny fluid pressure is bled off, maybe back to the tranny pan, and prevents the transmission from engaging in any gears, other than park.

    I believe this was an electronic safety feature installed because some mid 90's dodge vans were launching forward, or backwards, while in park. So, if my shifter switch is bad, and not registering anything other than park, the transmission will not engage in any gear other than park.

    I brought home another parts truck two days ago. When I get some free time (maybe next year), I'll try swapping out the shifters and go from there.

    In the meantime, if anyone has any useful knowledge to share, ideas, or what not, feel free to contribute to this conversation.

    If anyone needs any parts, I just parted out one blazer, have a bunch of parts lying around still, and have another one to piece out. Anyways, I'll keep this thread updated as work progresses along.

    :o)
  • Did you ever find out what was causing this? My blazer is doing the same thing. thanks..
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