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Chevrolet TrailBlazer Noises and Sounds



  • fj4072fj4072 Posts: 29
    I forgot the most common issue. Check the hood latch and the bump stops, these can make a lot of squeaky noises.
  • ljansonljanson Posts: 1
    i had this same problem with my 2003 TB.. just got it fixed by resetting the system.they said... they called it a "calibration error" they also said "calibration outdated the PCM calibration needed to be updated to correct concern" and..." PCM controls fan clutch engagement"." the ticking noise is caused by PCM timing when to en gauge and disengage the fan clutch at idle speed.".

    i just got it back and so far the knocking noise is gone...
  • gjb61gjb61 Posts: 1
    i have the same problem, i changed both outer front axles front end synthetic oil and rotors and pads. after changing the right side the noise changed from a constant drone to a drone that goes away as you steer to one side. i am wondering if the center shaft is the problem and when i engaged the right shaft into it that changed something. any feedback-help will be appreciated.
  • mbassettmbassett Posts: 1
    I have an intermittent noise that plays through the speakers, with the radio on. The noise seems to change in pitch as i accelerate and reduce speed. The noise comes and goes, but never when I have it at the chevrolet dealership. I have had it there 3 times, but they cannot duplicate sound. This has been going on for more than 50k miles and I am up to 89k. I think that the noise is coming from something in the engine. Does anybody have any ideas? I want to get rid of truck, but I don't want to dump this problem on someone else.
  • My 2004 TB is also sounding like a tractor trailer. My husband thinks it is the manifold. If you have a bad manifold, would it make a put put sound when you accelerate?
    Also, my vehicle has a sound coming from under the back rear when I go over small bumps. It's like the rear end is going to fall off. My vehicle sounds like I'm in a cartoon (put put, clink clink, rattle rattle). Someone, anyone do you have a theory. :confuse:
  • burdawgburdawg Posts: 1,524
    Could be an exhaust manifold leak, but it's by no means is for sure. The noise in the back shouldn't be hard to locate if it's that bad. Whatever it is probably is very loose, but someone has to get under there and look. Usually in this case you need to jack the rear from under the axle so the rear suspension stays in the unextended position, but I don't have any trouble crawling under our 02 for a quick look underneath without jacking it up.
  • n3xjtn3xjt Posts: 2
    I have found the issue.
    It was called Spline disconnect, which was caused by the bearings gone out of the 4WD front disconnect. It is located on the passenger side of the engine block, the CV Shaft from the passenger side goes into this. I replaced the bearings, and rebuilt the assembly. And fixed my issue. ;)
  • I have 2 problems...
    I have a 2003 Trailblazer that "CHIRPS". . I replaced the front and back brakes and rotors, the chirp still continued. (Brakes and Rotors were necessary) Turn the Air Conditioner on and the CHIRP is present, turn the Air Conditioner off and the CHIRP disappears!! ?????
    I also had a SERVICE ENGINE SOON light that comes on. Autozone ran a diagnosis test on it and said I was running 'rich' and my ECT sensor was faulty. Bought a bottle of Lucas Fuel Treatment and Injector Cleaner and added it to the full tank. Bought a new ECT sensor and put that on. (Changed the plugs since they were never changed and I have 125,000 miles on it.) Cleaned and re-oiled the K & N air filter. Started it up and it ran like a top.
    Thought everything was GREAT. On the way home the SERVICE ENGINE SOON light came back on. Back to AutoZone... now their test shows that the thermostat is not working properly. Will get a new one tomorrow.
    But does anyone have any idea why the CHIRP is being heard?? ONLY when the AC is on.. do not hear it when the air conditioner is off. Car Manual and Haynes Manual do not address it.. help please
  • I also changed the Serpentine belt.
  • Stever@EdmundsStever@Edmunds YooperlandPosts: 38,915
    edited July 2011
    Bit of a long shot, but some belts have logos that are painted on and sometimes the logos can make an irritating noise as the belt goes around the pulleys.

    If you can make the chirp go away by applying some belt dressing, that may be the issue.
  • burdawgburdawg Posts: 1,524
    With that many miles the belt tensioner or idler pulley could be getting weak. The chirping sound is quite often the belt slipping over the pulleys slightly. Turning on the A/C puts more load on it. Also the belt alignment should be looked at, a worn idler or tensioner pulley bearing can put it out of alignment.
  • :confuse: My TB makes a "chhh chhh chhh" noise between 30-50 mphs. Seems to come from front/drivers side. I have hit the 100,000 mile mark. Does anyone know what this could be and how we can fix it?
  • th6397th6397 Posts: 1
    Is it ki da like a dull hone kinda noise because my fathers Tb had the same kinda noise then it generated a kind of tingy noise to it while idling after he let the hone go without getting it checked id say it is something with the exhaust if I described what u are hearing
  • I have the exact same thing with our 07, did you ever get it figured out, also can't get it to make that sound when we bring it in.
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