- #411 of 420
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Re: 04 chevy tb [dunn03]
by trail03
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Nov 05, 2009 (2:00 am)
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Replying to: dunn03 (Nov 01, 2009 6:58 pm)
replace the fan clutch i did on mine and it works better now read my post on that same problem trail03 I also had that problem
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- #412 of 420
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03 TB Overdrive Problem
by clutch_artist
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Nov 05, 2009 (8:31 pm)
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My 03 Trailblazer has 201k on it with no problems. Tranny had first flush at 164k. Recently it started acting a little funny in overdrive. At cruising speed (50mph and up) it acts like it is searching for a gear. It doesn't actually drop down to third but at 60mph for example, it bounces between about 1600rpm and 1900 rpm about every 5 - 10 seconds. Ever heard of this? Any suggestions? I'll be going about 3k miles over Thanksgiving towing a trailer and want to prevent any problems. Thanks in advance!!
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- #413 of 420
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Re: 03 TB Overdrive Problem [clutch_artist]
by burdawg
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Nov 06, 2009 (7:58 pm)
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Replying to: clutch_artist (Nov 05, 2009 8:31 pm)
It could be the torque converter locking and unlocking. With that many miles the pump in the transmission is probably worn and the internal fluid pressure may be low. You may want to have it checked. When it was flushed was the filter changed?
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- #414 of 420
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Re: 03 TB Overdrive Problem [burdawg]
by clutch_artist
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Nov 07, 2009 (5:07 am)
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Replying to: burdawg (Nov 06, 2009 7:58 pm)
I did have the filter changed at the time it was flushed. Can a tranny shop diagnose this with any confidence? I really don't think the tranny is slipping. It shifts firm in all gears. I don't want them to tell me it needs a rebuild if it really doesn't. What kind of repair bill can I expect?
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- #415 of 420
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Re: tb 2003 transmission problem [trail03]
by KUQUE
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Nov 07, 2009 (6:36 am)
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Replying to: trail03 (Nov 05, 2009 1:52 am)
happy to hear that your truck is running great now. wish I had me to guide me when I first encountered problem...lol. I replaced mine over 3 yrs ago, and it's still running great. t/c 
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- #416 of 420
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Re: 03 TB Overdrive Problem [clutch_artist]
by KUQUE
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Nov 07, 2009 (6:41 am)
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Replying to: clutch_artist (Nov 07, 2009 5:07 am)
you can take it to any mechanic with a diagnostic computer and it will give them a code. take that code and call dealership and ask what that code means. if it refers to fan clutch, you don't need trans rebuilt. most diagnostics cost about 30-50 bucks. good luck.
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- #417 of 420
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Re: 03 TB Overdrive Problem [KUQUE]
by clutch_artist
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Nov 13, 2009 (6:52 am)
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Replying to: KUQUE (Nov 07, 2009 6:41 am)
Well I had it hooked up to the computer and there were no codes, so I didn't figure it was the fan clutch, but I ordered one and put it in anyway. It really wasn't too bad to change. Unfortunately, but not surprisingly, it didn't change anything. I guess I'll have to take it to a tranny shop. I'm running out of time here before I take it on vacation. I like to put a few miles on a vehicle locally, before I take it on a trip to make sure everything is functioning properly. Do you think if the tranny needs repair, I can be confident that it will work properly and not leave me stranded? The shop I plan on taking it too seems pretty reputable.
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- #418 of 420
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Re: 03 TB Overdrive Problem [clutch_artist]
by dws2k
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Nov 13, 2009 (6:59 am)
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Replying to: clutch_artist (Nov 13, 2009 6:52 am)
I will take my truck to the trans shop and get the flush. I hope that works. They need to have a recall on these trans, if there are so many people having problems.
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- #419 of 420
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2002 Chevy Trailblazer Tranny Problem
by timb2
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Nov 21, 2009 (5:16 pm)
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I have an 02 Trailblazer with 160k miles. For the past year when I step on the gas from park or being stopped it goes well up til 25 to 30 mph, then it does not seem to shift into second gear until the rpms get up to about 3500 to 4000, The past month it has not wanted to shift at all into 2nd gear
My mechanic said there are shifting solenoids that may be bad The tranny shop said 1800 dollars and I will rebuild it
I just replaced the spark plugs and the problem has seemed to have gone away where it wont shift into 2nd gear at all and back to the first situation
My question is what is going on with the transmission
Two local dealers of G M Vehicles say the transmission is verry tough and they have not heard of this happening any Ideas???
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- #420 of 420
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Re: 2002 Chevy Trailblazer Tranny Problem [timb2]
by trail03
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Nov 23, 2009 (2:37 am)
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Replying to: timb2 (Nov 21, 2009 5:16 pm)
replace the fan clutch my trailblazer was doing the same thing the fan clutch has a sensor in it and it some how tells the trans to shift gear aslo yoiu can read my post on that same problem on #394 and the answer is on 395
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