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Chevy TrailBlazer Transmission Problems

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  • I am having trouble shifting my 2002 GMC Envoy out of park. The selenoid is firing (thanks msg #14638 and #16932). When I turn the vehicle off the key does not go into the lock position and the shift button still operates. In order to get my key out I have to turn the key to the on position and back again. It then goes into lock, my key comes out and the shift button is locked. However, when I start the vehicle the shift button will not release, even though selenoid is firing. If I push forward and up on the shifter, the button will depress. Any ideas? Anyone else having this problem?
  • I have a '04 Trailblazer that has just been declared a lemon by the TX Dept of Transportation. They have ordered GM to repurchase it. I know of the problem that GM says is Normal . I had 2 drive shafts replaced. The driveshaft is an aluminum tube and resonates every noise from the drive line. I tried to tell them there was more wrong than that. They insisted it was normal. I won my Lemon Law case on a different issue though.
  • I have a 2004 Trailblazer EXT LT V8 model, and am having some issues with the transmission. Yesterday when I started up the car, it was reving higher than it should have, and it really didnt have much torque. On the highway I had problems getting enough power to pass people. It was towed yesterday by the chevy dealer to the dealership, and at the dealership the battery died, and the computer completely reset, any idea what is with that? And the dealership called and said they found a black box that when driving when u move it, the transmission goes either back to normal or goes to reving high, like the bands are slipping, and also they have no idea what it is. Our trailblazer only has 28000 miles on it. Any ideas about

    A. The mysterious black box
    B. The not enough power
    C. The battery dying and the computer resetting

    Thanks
    All I can say is thank god that its still under full warrenty.
  • our whole trailblazer issue is solved, it was a bad ignition switch, that was the whole problem...I hope that helps some people with the same problems
  • I PURCHESED A 2005 TB IN JULY I HAVE NOW BROGHT MY TRUCK IN FOR THE SECOND TIME... WHEN DRIVING A SHORT DISTANCE THE TRUCK WOULD FAIL TO UPSHIFT AND THE CHECK ENGINE LIGHT WOULD COME ON.. THE FIRST TIME I BROUGHT IT IN THEY SAID NOTHING WAS WRONG W IT NOW THE ARE FINALLY SAYING THE SHIFTER IS FAILING TO UPSHIFT DOESN ANYONE KNOW IF THEY ARE DOING ANYTHING ABOUT THIS SICE I SEE IM NOT THE ONLY ONE W THIS PROBLEM?? :lemon:
  • I have a 95 chevy blazer s/10 model. The transmission is bad. I am living in Germany and am wondering if someone could help me cross reference the transmision. Is there another chevy vehicle that would use this same tranmission? It is a 95 Chevy Blazer S/10 model v/6 with an automatic transmission.

    Thanks
  • I think someone in a past post had asked this question, but I didn't see any direct answer in reviewing the posts. Is there any preventitive measures to help prolong or avoid this component failure? If you change the trans fluid does the "better lubrication" of new fluid help or no? I am not familiar with this part, what exactly does it do/function? My wife told me a few days ago that she was going up a hill and she thought she was pressing the gas a good amount but "it wasn't going anywhere...like it lost power". Happened twice. It hasn't reoccurred recently to my knowledge and when I drive the truck I have not experienced any slippage or high rpm spurts, but I suspect the problem could be starting...has 50K on it. The vehicle is leased for 60k and wondering if it will hold out till then or anything helpful I can do (like new fluid) until return time.
    Thanks. :confuse:
  • hardhawkhardhawk Posts: 702
    Great Question! I will be anxious to hear any responses too. I still have the shudder & bump when at a stop light when the car is cold. I have almost 51,000 miles on my 2002 Envoy in 4 yrs and 4 months. Other than this issue, which is intermittant, still love the vehicle.
  • tomg3tomg3 Posts: 1
    When I tried to use AWD nothing happened. Simultaneously, the "Check AWD" warning lite came on. On Star couldn't provide any insight. I have not experienced any trans issues prior to this occurance. After reading several postings I have not noticed any that mention a failure to shift into AWD (or 4WD). Any insights as to what I might be in for when it gets into the shop?
  • I have a 2003 Trailblazer EXT that nearly ran me over yesterday when it began rolling backwards down my driveway while in park. I was able to open the front door and turn the steering wheel to avoid a collision with another vehicle across the street. I haven't a clue why it rolled or why I was able to steer the truck. I thought the steering wheel should have locked. Anyone else out there ever hear of that before...thanx.
  • I am having a similar problem with my 2002 Envoy. Sometimes when I am in 2WD, it will shift into neutral without me shifting. I have to pull over and either turn the car off and restart or put the car into 4HI. I have an appt at the dealership next week but my local mechanic says it might be one of the following- a problem with the transfer case motor, a problem with the switch on the dash, or the computer may need to be reprogramed. I do a lot of highway driving and I have to drive in 4HI to ensure nothing shifts while I am driving.
  • hardhawkhardhawk Posts: 702
    My switch had a mind of its own some time back. Replaced the switch and no further problems.
  • burdawgburdawg Posts: 1,521
    I don't know what happened in your specific case to cause it not to lock in park, but this is a good example of why you should always set the parking brake for safety.
  • I have a 2005 chevy trailblazer and at around 40,000 miles it startted making a "whining" noise in the front driver side. someone said it could be the wheal bearing but it doesnt seem like it is since it still runs and i think the bearing would have seized up by now. does any one thinnk it could be the cv axle? any help!!?? thanks
  • could the addition of an after market transmission cooler help solve the problems . seems like most of the problems are caused by heat .. i just bought a o5 tb new and have 600 miles on it with no problems yet . and after reading this i am going to add a after market cooler and extend my warranity
  • I have a 2002 Trail blazer LS. Just recently it started a high pitch whine and we could not get it to drive over 50 mph. no longer has any umph any suggestions???
  • I brought my Envoy to the dealership and they found the problem. It was the encoder motor censor. He said it wasnt reading the way it should and it would hang up. Hopefully the problem is fixed!
  • gmfangmfan Posts: 188
    Wow, you are putting the miles on yours. I thought I was putting a lot of miles on mine (2002 TB with 85,000 mi). In my experinces, bearings will not "whine", they will make a "growling" noise that gets worse over time. Have you hit a curb or colvert very hard recently? Try wiggling your tires when in parked on a level service. If the right front has more play than the others, then it could be the bearing. Or you could try driving near a wall or have a friend drive next to you with the windows rolled down to see if it is making noise outside the vehicle. Let us know.

    If your bearing seized your wheel will probably have fallen off!
  • I received a recall from GM for this speific problem with my 02TB. At the dealer, they told me they needed to calibrate the transmission?
  • I miss typed, its a 2004 but i do have a lot of miles on it (70,000)! The noise is coming from the front by the wheel and its not a high pitch noise but rather a low tone groan. It starts faint and then as I pick up speed, it gets louder. I just took off the wheels and gave everything a visual check and it seems fine, theres no metal shavings from anything grinding and things seem greased up. The noise changes as i turn the wheel so that makes me think that it has something to do with a joint in the front end and not the bearing because the bearing is always still.
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