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SUVs Chevrolet TrailBlazer Chevy TrailBlazer Transmission Problems
416 messages, Last post on Nov 07, 2009 at 6:41 AM
You are in the Chevrolet TrailBlazer Forum. Your Hosts are steve_ & tidester
I have a 2002 Trailblazer 4WD. I'm having a problem with the transmission starting off in the wrong gear. This problem is very intermittent, and occurs usually on a cold start. When I start the car it revs extremely loud and fast, and even if I allow the car to warm up for over one minute, the revving goes on higher than normal. Then, when I put the vehicle in drive, it bogs down in a higher gear than first, and I can't get any power. I usually have to stop, put the car in park, and then back in drive once or twice to get first gear to engage. Also, when passing or accelerating on the freeway, I am losing power. When I first bought the vehicle it had lots of pep, now it is pretty much a dog. I've had it at the dealer four times, and they changed the transmission fluid pressure valve once. The service manager told us that this is a problem that GM is aware of, even though they will deny it, and they are trying to determine if the problem is one that they should recall or not. Has anyone else had this problem, and if so, did you get it resolved? I am so frustrated I'm ready to call a lawyer and envoke the lemon law. I feel like the dealers and GM want me to believe this problem is all in my head, so I'll just go away. Overall, I really like my Trailblazer, but I feel this problem is a real safety hazard. HELP......
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You might ask about the problem in 02 Trailblazer AWD problem and Chevy Trailblazer, GMC Envoy, Oldsmobile Bravada. tidester, host |
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Are you sure the car revs loud and fast? Many have posted that the cooling fan starts when the car is started. This loud noise can be confused with high rpm's, but the engine is not racing fast. It usually takes about a minute or two for the fan to shut off and then everything is normal. One or two have posted that when the fan is on, the power is reduced but this may be a different problem. Look at the tachometer the next time this happens to determine if the engine is indeed racing. If it is at approx. 800 to 1000 rpm, this is normal. If you start to drive off while this is happening, it will FEEL like you are in a higher gear than first gear, but you are not. Let the dealer mechanic know this. Good luck let us know what happens. Frank |
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| What jnshell describes is exactly what is happening on my '03 Trailblazer. Took it in this a.m. and service just called to say they can't find anything wrong! It has only happened 4 or 5 times in 13000 miles (6 months). But it could be a safety hazard. Hope someone out there has the answer. At least I know I'm not imagining things! | |
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I have had this happen on my silverado truck. It has 35K miles and is 3 yrs old. It happens every few thousand miles. I will come to a stop like at a light it will turn green i will hit the gas its like the truck is in neutral it will rev up (rpms go up) then kick into gear. I have even squealed the wheels once in a dunkin donuts lot. Now when i feel it kick in i let off the gas and reapply and its fine. When you feel it lock up let off the gas as fast as possible then hit the gas again it should be ok. It isnt a major problem but there is a fix. I will look for the exact part and reply once i find it Ryan |
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check this out http://www.gm-trucks.com/forums/index.php?act=ST&f=3&t=17- 831&hl=transmission&s=40190f4c60df10059f6ed10318168ce0 Its the valve body that needs to be replaced Hope this helps you out |
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The problem that I am having with my transmission is that when I get up to 50mph, the transmission stalls out, not changing to the next gear. The first time I took it back to the dealer, I was told that my transmission needed to be reset. About a month later, I had the same problem again. This time, was told that they did not know what was the causing my transmission to do this and that when they hooked it up the computer, no codes were displayed. But they said that the valve body cover needed replacing. So, they repaired it. A couple of days later, I returned it again for the same problem,(5/20/03) this time I contacted GM. This time the dealer tried to make me feel like the problem was in my head. As a result, the service manager and I went for a test drive, with the manager driving, experienced the problem for herself, what I was talking about. For the past week, my representative from GM has been in direct contact with the dealer. As of 5/22/03, they still have not determined the cause. Around 2:30p EST, my service advisor at the dealer informed my that my car was ready and that they rebuilt my transmission. My question is how long does it take to do a complete over haul on a transmission? Should I trade the car in? I only have 39,325 miles. Also, the first time I took it back, I had about 34,000 miles. P.S As of 5/23/03, the dealer has not been responsive to GM.
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| how long did it take them to rebuild the trans??? It should only take a few days usually (max) | |
| Hi I just wanted to say I too have been having problems with my car not down shifting correctly. I took it to the dealer and they had it for 15 days and I was told there was a clog in the transmission line. Well I am returning the blazer to the dealer again tonight for the same problem. They changed everything the first time including the value cover and then when that did not help they came up with the clogged line. The blazer does not do it all the time, it does do it when it is cold and also when it has been on the road for a long period of time. I am also having problems with A/C not working all the time, it will run for a long time and then if you stop and shut the car off, when you start it back up, the A/C no longer works. This too they have no cure for it. | |
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I have been having the same problems with my 2002 Trailblazer since around 20,000 miles. I was also told by the dealer that there was nothing wrong with it. Last week (at 33,000 miles) my transmission went out leaving my daughter and I stranded on the side of the road. We were only going about 30 miles per hour when it happened and my rear tires just locked up and truck started skidding. I am so thankful that I was going at a slow speed, otherwise I could have had a serious accident. The dealer changed a part in the transmission called a Sun Gear. It runs fine now, but I am not convinced that nothing else will go wrong with it because it has been in the shop four other times and one being the rear end. I hope this info. helps!
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