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Chevrolet TrailBlazer Noises and Sounds

46 messages,  Last post on Nov 18, 2008 at 11:25 AM

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#37 of 46 Drive line noise by jerry94 Jul 04, 2008 (2:14 pm)
My wife and I moved from Ca. to Southern Utah last January,and being in snow conditions wanted a 4x4 SUV. As we couldn't afford a new one we bought a used EXT 2002 TB from a used car dealer. The car was used by the original owner to commute from ST George UT. to Los Vages for several years,so it has high millage. The car looked well taken care of and regular maintaince looked to be done on it. As we bought it in the winter, the windows were always rolled up when driving,but we could always hear a slight noise, what I would describe as a slight grinding noise. seemed like it was coming from the dash. I thought perhaps a vent fan.As the weather has got better and in Cedar City UT,you can drive around most of the time without A/C with the windows are down. The other day this noise was really getting to me,but when you come to a stop light the noise goes away. Being a "shade tree mechanic" years ago when you could still do some things your self,I thought drive line. When I got hone I crawled under the TB grabbed the drive shaft, and you could wiggle it back and forth a little, and sure enough the noise was about the same. So it appears the u-joints need replaced. My question is can an old "shade tree mechanic" do this at home with it up on jack stands with basic tools. or do you need a special press to press out the u-joint?
#38 of 46 Knocking noise by jerry94 Jul 04, 2008 (2:21 pm)
The same guy the posted the drive line noise. Two other questions. When you start the TB, not every time but perhaps 80% of the time there is a loud knocking noise from the dash. 3-4 loud knocks.I am thinking a vent door opening or closing. Once in awhile it will do it while driving, but most of the time at start up. Also it seems like the engine really winds up before the tranny shifts. Sometimes it has to reach around 3000 rpm before shifting. Is this normal? Thanks for any help.P.S. It has the in line 6 Replies to this message: mkb3 (Oct 03, 2008 6:41 am)
#40 of 46 Rear Growling? Hungry! by garter Aug 13, 2008 (6:48 am)
Hi: 2006 TB R/R wheel area a growling type sound for 1 r 2 revoltions and its gone? any ideas as to what it might be? Please don't say bearing
#41 of 46 Re: 02 Trailblazer loss of acceleration [brinak] by crappychevy33 Sep 01, 2008 (1:38 pm)
Replying to: brinak (Jan 17, 2008 7:31 am) The same happened to me. No acceleration, got worse over time. It was a clogged catalytic converter. I had it replaced (at 86,000mi) however, the shop cracked my exhaust manifold getting it off and would not take responsibility for it. I have not fixed that yet but acceleration is back to brand new.
#42 of 46 Re: a noise that sound like a tractor trailer taking off [jackiea] by ticadoo Sep 08, 2008 (10:25 am)
Replying to: jackiea (Apr 26, 2007 3:13 pm) How would I begin to file a claim with GM? I am so sick and tired of the problems with my 03 Trailblazer..I only have 66,000 miles on it and I would compare it to a truck that had 300,000 miles on it!!
#44 of 46 Trail Blazer LT 4x4 steering noise, vibration by luisin22 Sep 22, 2008 (6:47 pm)
I bought a 2003 Trail Blazer 4x4 but I've noticed a noise with vibration in the steering wheel, this noise, and vibration starts when i accelerate and increases depending on the speed, but his only happens when driving in straight line or right turn. if I turn left even sligthly the sound and vibration ends, I'm driving it in 2H, and even the 4DWH and 4H makes that sound, What can be the problem?
#45 of 46 Re: Knocking noise [jerry94] by mkb3 Oct 03, 2008 (6:41 am)
Replying to: jerry94 (Jul 04, 2008 2:21 pm) I have a 2002 TB with the inline 6 and I have the same knocking noise -usually 3 knocks- in the dash in front of the steering column. It happens at start up or within the first 3 minutes of driving.   I also have a problem with the healights turning off while driving and don't know if these are related.
#46 of 46 Loud Knocking Noise on Start-up 2008 TB by tkelly1108 Nov 18, 2008 (11:25 am)
I have a 2008 TB that I bought in July of this year with only 10,714 miles on it. It has developed a loud popping/knocking noise mostly upon start-up but it has happend when in reverse and also in drive. I have had to the dealership 2 times, once they said that it was the drive shaft and the second time they said it could possibly be the AC clutch. They said that they could not duplicate the noise. Does anybody have any ideas of where to go now.

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