Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum banner


  1. Vibration from 68--78 mph.

    OEM Issues
    Just solved my vibration problem...again. 2003 Trailblazer 4.2, 4WD. NOT extended version. Currently 247K miles. Several years ago, I had a vibration and noise from 68--78 mph. No* shake at 65 or at 80 mph. Worst about 74 mph. Not dependent on power or trans gear--would do it on throttle...
  2. Rough Idle(Not Throttlebody)

    OEM Issues
    Ok, so I just got a 2005 Envoy 4.2L wth 140,000 miles on it. It had a rough idle so I cleaned the throttle body and it helped a bit. This morning the check meter light came on and i noticed that my oil pressure was going from half to a quarter back and forth. It was running pretty darn rough...
  3. Rumble and Vibration that increases with speed

    4x4 Drivetrain
    Before I start, thanks for taking the time to read this post! I've been experiencing a problem of steady low groan(low speed)/rumble(mid-high speed) and vibration that increases with pitch and frequency and don't know the culprit. The noise and vibration is consistent at a set speed whether...
  4. Meinda

    OEM Issues
    I hope this is in the right thread! I have a 2005 TB 6 cyl, 218,000 miles. Always well maintained. Runs fine, shifts fine but there's a noise when driving. It's not there at low speeds but the faster the rpm's go the more noise I hear. It's coming front the front. Not loud, nobody turns to see...
  5. Loud Noise + Shudder

    Hey All, First post ever! I posted in this section because I have no idea what it's concerning/where it's located and what's wrong. Several weeks ago, I noticed this shudder/vibration under the steering wheel whenever I first started the car or right after I shut it off (the engine normally...
  6. [SOLVED] 2002 Trailblazer EXT Vibrating Hood

    The "How-To" and DIY Section
    I have a 02 Trailblazer EXT that when in idle or sometimes accelerating the middle of the hood vibrates. I'm thinking a brace or bracket of some sort would stop it from vibrating but I have no clue if a brace would work or even how to remedy the problem. Any help is appreciated.
  7. Front End Vibration?

    OEM Issues
    Hello, I have a 04 trailblazer with 130,000 miles on it. Last week I replaced my radiator and water pump and added a transmission cooler, because it has been running hot (over 210) it’s been doing this for the past 3 summers and I have previously replaced the thermostat and fan clutch and it’s...
  8. Alignment Issues

    2005 Chevy TB LT I6 4x4. I had a vibration in my steering wheel for a month or two, which was more noticeable on the highway at speeds of 65+. As it progressively got worse I finally took it in to get looked at. The shop said I needed new ball joints on both sides of my front end. I replaced...
  9. Vibration

    4x4 Drivetrain
    Just had to have the transfer case module, and the throttle body assembly replaced on my '02 GMC Envoy. When I received it back from the dealership, it now has a vibration both when idle and in gear. Although the transfer case module was not working before the repair, the engine would start...
  10. [SOLVED] Changed Headlight-Now have engine trouble!

    Engine Tunes/Mods
    So I don't know if these two are related, but the problem started after I changed my Driver's Side Low Beam. 2002 Trailblazer V-6 103k 4x4 Truck was running great but I had a headlight go out, the driver's side Low Beam. I replaced the light by going the "easy way" and popping off the...
  11. HELP! Shaking in 4wd after lift and cv install

    4x4 Drivetrain
    Hi, I'm looking for some help on fixing a problem with my '06 tb 5.3L 4wd (90k miles). I've gone through the site quite extensively but I don't think anyone has had the exact same problem (and posted the solution), so please excuse the long post but I wanted to put up all of the details...
  12. Front end vibration/rattle at speed.

    I have a 04 TB EXT 4x4 that has developed a 'rattle' above 45 MPH. It is more of a vibration in the floorboard than a noise and is only noticeable on a smooth road. The best description I can give is it feels like someone is hitting the floorboard with a rubber mallet intermittently. The...
  13. Vibration!!!

    OEM Issues
    hello all, im trying to figure out whats causing a vibration i got going on, to start off heres my info 2005 trailblazer,4.2l lt standard wheelbase 104,800k when running, i get a miss like vibration in park,r and all drive gears, goes away only in neutral(somtimes in nutral too) when driving i...
  14. Possible transmission issues

    OEM Issues
    Ive got a 2006 Trailblazer LS 4.6 awd. as of about 80,00kmi Ive noticed that the the vehicle never fully engages its final drive or lockup like it used to. I seem to wait all day for it to engage into this drive setting and it will only engage with no resistance for example when im going down...
  15. New motor mounts, followed by new vibration

    OEM Issues
    I changed my motor mounts recently. That did the trick as I had the dreaded drive gear vibration. The passenger side mount was torn almost completely around its' circumference about an inch from the top stud. Fast forward to about two days later... I now have a vibration that's different...
  16. Longtime viewer, first post

    This site has been very beneficial for a variety of repairs: front brakes and outer tie rod to name two. Now looking to repair vibrations, excessive road noise that I believe may be hub bearings. 2006 Envoy 4WD, 125K miles. Thanks for all your help.
  17. CV axle replacement - does it just pull out?

    4x4 Drivetrain
    My trailblazer developed a vibration in the front end recently, along with a swoosh-swoosh sound most noticeable around left turns. Started analyzing underneath and the large clamp on the inner CV boot is completely gone and there is grease EVERYWHERE lol. Not sure where the clamp went, it was...
  18. 02 Roof Rack Vibrates with Cold

    My 2002 Trailblazer roof rack vibrates when greater than 40 mph and under 40 degrees. I've tightened up the nuts in front a few times and am considering adding locktite and maybe goop. Has anyone else experienced this? I can tell its the rack as when you pull on the exit/entry straps the...
  19. Braking Vibration Mystery

    I Have replaced all four rotors and pads on my 04' 4x4 trailblazer @90k mi, in an attempt to eliminate a vibration that only occurs under braking. The vibration is exactly what I have experienced in other vehicles with warped rotors, however after replacing them the problem persists, under...
  20. vibration/rough idle

    OEM Issues
    I have an 04 Trailblazer (46K miles). It was great before I was t-boned in September. The body work took 2 months to complete and looks great. Unfortunately, when I picked it up, it idled rough/vibrated, especially when cold and between 6 and 700 rpm. I was hit on the passenger side and it...