- #395 of 422
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Re: trailblazer 2003 transmission problem [trail03]
by KUQUE
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Oct 24, 2009 (10:13 am)
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Replying to: trail03 (Oct 24, 2009 9:13 am)
I had the same problem with my 02 tb, took it to a mechanic(good honest one, which not too many around this days) and he told me it was the engine fan pulley. Seems that a circiut goes out and that the computer communicates with the trans via that circuitry. The trans is not getting the info to shift properly coz of that circuitry problem. Got a new pulley from an authorized AC/Delco parts store for under 80 bucks. Installed it myself. When I started my tb after installation, I could notice immediately the difference in rpms and idling of the engine. Took for test and ran as good as new. Dealership wanted about 500 bucks for pulley with fan. Stated that pulley was not guaranteed if bought separately. This happened to me over 2 yrs ago. TB has been running great since. You can install without removing fan cover, but it will be tight. You can bend both fan and cover just enough to get pulley in there. Intalling screws will also be tight, but a bit of patience, you can get it done. Hope this helps. Spend the 30-40 bucks to get it checked for pulley, it will be worth it if you save the hundreds of $ to get the trans worked on and not be the problem.
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- #396 of 422
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Re: trailblazer 2003 transmission problem [KUQUE]
by trail03
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Oct 24, 2009 (12:31 pm)
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Replying to: KUQUE (Oct 24, 2009 10:13 am)
Engine Fan Pulley it is the part in front of the tb is it under or next to what part.Also thanks for answering my question . A little 
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- #397 of 422
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Re: trailblazer 2003 transmission problem [KUQUE]
by trail03
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Oct 24, 2009 (5:31 pm)
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Replying to: KUQUE (Oct 24, 2009 10:13 am)
Engine fan pulley i can not find it is this what i call that part when i go to the part store and what does it look like.thanks
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- #398 of 422
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Re: trailblazer 2003 transmission problem [KUQUE]
by heezyjos
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Oct 26, 2009 (6:24 pm)
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Replying to: KUQUE (Oct 24, 2009 10:13 am)
my suv when i drive it i willl hit the gas pedal the rpm's will go up but the car seems as if its idoling like im revving the engine in drive is the best way to describe it and i cant get the car to go over 40mph it seems. autozone checked my check engine lite and they advised that there was a problem with the coolant sensor however would this causethis type of problem. i also just had the battery replaced and the battery is only a few weeks old we checked the connection on the battery an they were not tight but autozone tightened them for me and it is still doing the same thing.do you think this is similar enough to what you went through ?
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- #399 of 422
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Re: trailblazer 2003 transmission problem [trail03]
by KUQUE
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Oct 26, 2009 (7:30 pm)
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Replying to: trail03 (Oct 24, 2009 5:31 pm)
My apologies, it is not called a engine fan pulley, but the fan clutch. you can see a pic of it at
http://www.am-autoparts.com/AM/Fans/Chevrolet/Trailblazer/-/AM-18868449/?utm_sou- rce=google_base&utm_medium=cpc&utm_campaign=new_google_base_feed
where are you located? you might think of calling these guys(very repuatable) here in my area, outsells the dealerships in replacement parts for ac/delco parts.
Full Service Auto Parts
1518 Mid Cities Dr · Pharr
(956) 781-8983
see if they will ship to you. if not, contact me again and see what we can work out. if I am not mistaken, I got the part for a fraction of what the dealership was asking. good luck!
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- #400 of 422
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Re: trailblazer 2003 transmission problem [heezyjos]
by KUQUE
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Oct 26, 2009 (7:39 pm)
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Replying to: heezyjos (Oct 26, 2009 6:24 pm)
I think so. will it release gears after hitting certain rpms and you release the accel. a bit. will it shift ok if you start on d1 or d2 and manually upshift? if you said yes, I do believe you are having the same problem. see post 399 and 395. I even put a website address in 399 to where you can get an idea of what the part looks like and going price. call the guys I advice post 397 and try the same thing. they had the part for a hell lot less than those sites I found. also, if they can ship to you, come back here and let me know what we can work out. maybe have you pay them, i pick up and ship to you and you reimburse me via paypal or some other way. let me know.
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- #401 of 422
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Transmission problems
by dws2k
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Oct 28, 2009 (5:14 am)
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I have a 2003 trailblazer ext and when I take off, it starts from a low gear and is loud. I have not been to dealer yet. Someone said it could be a trans sensor that needs to be replaced. What's your thoughts on this?
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- #402 of 422
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Transfer case plug
by dws2k
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Oct 28, 2009 (5:59 am)
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I tried to change the oilin the transfer case. I stripped the plug while doing this. What could I use to get the plug off. It is on there really tight.
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- #403 of 422
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Re: trailblazer 2003 transmission problem [KUQUE]
by dws2k
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Oct 28, 2009 (6:09 am)
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Replying to: KUQUE (Oct 26, 2009 7:39 pm)
If the fan clutch is bad, does it make a clicking sound when the engine is running?
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- #404 of 422
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Re: 2002 trailblazer transmission [skmaher]
by dws2k
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Oct 29, 2009 (6:24 am)
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Replying to: skmaher (May 18, 2005 4:22 pm)
How do we go about filing a class action suit against GM? My transmission is bad also. I don't have that kind of extra cash for a tranny rebuild.
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