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Chevrolet TrailBlazer Maintenance and Repair



  • crheacrhea Posts: 1
    I have a 2004 4 x 4 Trailblazer with the 4.2L engine. The oil dipstick rusted in half near the cap. Does anyone know where I can find a replacement? I tried the local dealership but the one they tried to sell me was about 5" too short.
  • My 2002 Trail Blazer has had this problem on both headlights. I replaced the pig tails to the lights twice on each side and ultimately replaced the sockets and leads. That cleared the problem up. Kwick Karr on Brown Blvd. in Arlington Texas ultimately got them repaired. The Chevrolet Dealer was not much help on this problem.
  • vbellvbell Posts: 11
    I own a 2007 4.2L I6 LS trailblazer. This issue has happened twice (exactly 30 days between). The first time, driving down the roads at about 25mph- truck looses power it goes down to about 10-15mph, try to gas it but get nothing. Then all of a sudden about 30 seconds later, it kicks back in and is fine. I called Onstar- had them run an emergency diagnostic- found nothing wrong. We thought maybe it got a bad gulp of gas. Second time it happened I was on the highway doing about 75 mph when the truck drops down to 25mph. FREAKED ME OUT!!!!- called Onstar again for a diagnostic- they say nothings wrong. I took it to the dealership, it was there for 4 days, couldn't find anything wrong. I called GM- they ended up giving me free oil changes for a year because they dont know whats wrong. I have been racking my brain for months trying to figure out why my brand new truck would be doing this. We decide to deactivate Onstar. I found it strange that theses happened exactly 30 days apart and that there was no similarity between the two trips- different speeds, different times of day, different temps, different everything. So my father brought up the point that when your vehicle is stolen and you call Onstar- they disable the vehicle. So what if there is a "glitch" in the system and it is disabling my vehicle for about 30 seconds every 30 days. I know it sounds crazy, but I've got to basically conduct my own investigation because everyone has thrown in the towel- they all think im crazy. Anyways, I haven't had Onstar in over a month and I've had no problems. If anyone knows anything about this or has had similar problems please let me know....i love chevy and i love my truck- i dont want these problems anymore with a brand new vehicle.
  • vbellvbell Posts: 11
    be careful with your honda...hope your aware there is a class action law suit against honda for their odometers reading mileage too quickly. I had two hondas before my chevy. Honda has dissapointed me!!! They dont make them like they used to!!!!
  • This fuse blows around 2-5 times per month. It is a 10amp fuse. Is it ok to try a 15amp fuse? any suggestions or thoughts?
  • vbellvbell Posts: 11
    hey dont know if you found the answer to your question about the grille by now but...I was thinking about replacing my snap in grille with an after market one. I just googled....chevy grille's. A whole bunch of companies make after market and stock grilles. Good luck!!! :)
  • vbellvbell Posts: 11
    I know you post was a while ago...but..I know that when i first bought my 07 trailblazer I heard this ticking and i thought it was something bad. It turns out that there is a chain (like a thick bicycle chain) that runs my cam i guess instead of a belt..and thats what makes it tick a little. obviously it could be something else, but your message just caught my eye and made me think of that. Ive also heard a ticking type noise in chevys while driving with an exhaust leak....but that might b a different tick noise.....
  • tidestertidester Posts: 10,059
    It's generally a bad idea to replace a fuse with one that has a higher current rating. Something is causing that fuse to blow and I would focus on finding what that is.

    tidester, host
    SUVs and Smart Shopper
  • 2 questions for you experts out there. 1. How do I change the Headlight lamp bulb elements. I can't seem to get into the housing to change the elements. 2. ever since I got the vehicle the reading lamps keep blowing the fuse. I can only get about 2 weeks before they don't work again. The dealer can't or won't find and fix the problem.
  • Hope everyone is getting ready for St. Nick. I've owned my 04 Trailblazer LT 4x4 since Mar 07 and thought I'd share my experiences thus far, and ask a couple questions. So far, I've had the following issues (thankfully under warranty) vehicle had 29,000 at time of purchase:

    Replaced fan clutch due to a/c not cooling as well at idle
    driver side power window master switch replaced due to rear window buttons on the control sticking.
    Replaced HVAC Control head. (when putting it on defrost it was blowing out the vents etc) lights were also out on 1 side of control.
    Front Stabilizer links replaced, rubber seal around license plate replaced.
    Weather stripping around all 4 doors re attached as they were all loose. Radio replaced due to several lights not illuminating. Driver side mirror gasket replaced due to wind whistle. (this helped lots, but whistle is still there. happens at approx 55 mph). Plastic trim around driver side power seat replaced twice due to breaking. (and its already cracked again). left front strut started leaking, replaced.

    Current mileage is 40,000 and I've had some strange things happen within the last 5,000 miles or so.. Oh, and btw there have been no aftermarket electronic or other mods added to the vehicle. Anyway, I noticed just before warranty ran out that the "fasten belts" chime wasn't always "dinging" at me when i would start the vehicle but, I never really thought much about it. Sometimes it does, sometimes it doesn't. Tonight it was rainy and cooler and when I started the vehicle, the chimes didn't work, (neither did the low fuel light, although it was illuminated) and the radio didn't work. The clock and all radio funtions were working, properly but it was like it wasn't picking up any stations, it just kept scanning thru and absolutely no sound. Just like all stations were off the air or no reception. Yes, I made sure the volume was turned up. Tried turning the vehicle off and restarting a couple times but it didn't help.. Later, I restarted the engine after refueling and the chimes and radio were back to normal. Also, 2 seperate times i've gotten the "service 4wd" light.. The first time was approximately 6 days after the warranty had expired. The light didn't shut off after starting the vehicle and was on steady until the next time it was started... Took it to GM dealer and they stated they couldn't find a trouble code when it was hooked to the computer. That was about 4 mos. ago.. Then a couple weeks ago, light was back on... At that time (and maybe this happened before since i didn't think to look) none of the lights around the 4wd switch were illuminated. 2wd etc.. And turning the 4wd knob didn't make any 4wd lights illuminate. Both times this has happend it was when the vehicle was first started. But next time i started vehicle everything was fine and it hasn't been on since. Anyone have any suggestions as to what the problem might be?

    I'd like to add that I'm pretty disappointed with this vehicle in general and would not recommend the TB to others. Since I've owned it, it has been one issue after another, although nothing too serious so far, but maybe its starting to be? Perhaps the newer ones are better?? I was excited when I first got this suv, since it is the nicest, newest car i've ever owned. However, it didn't take long for the honeymoon to wear off, because the problems started on night 1 of ownership with the HVAC switch. I come from a long line of die-hard GM fans (myself included) and it pains me to say this but, so far this thing has been one more piece of s***.
  • My kid got glue on the one side of the bench seat. How do I replace the upholstery? First, how do I get the old upholstery off? Is there some kind of special tool to remove the "pins" holding it onto the seat or do I just have to pull harder? Second, where to I find a replacement piece of upholstery? Should I go to the dealer or is there someplace to get it online cheaper? I know I could take it to the dealer to fix, but it's probably ten times as long and as expensive as doing it myself as it doesn't look like to hard of a job. Thanks.
  • steverstever Posts: 52,683
    The dealer is just going to farm out the work to an upholstery shop. You could call your service writer and ask them who they use and take the car there yourself. Or just visit a few upholstery shops in your area. The shops will likely tell you how to remove the fabric if you want to do it yourself, and some may sell you the material or give you recommendations on where to buy some material.
  • :sick: Hi, It was suggested I post this message in this forum discussion.

    Whenever I accelerate, for instance after being stopped at a stop light, starting off it's very slow to pick up speed, and once it gets to 20 mph it jerks and the same thing once I'm at 30 mph. It doesn't do this once on the expressway going 60 to 70 mph. I just had a complete tune up that involved replacing plugs -- everything that could be replaced. Also, it runs much better than it did before the tune-up.

    I have 131,000 miles on it. I'm not sure if this makes a difference, but I noticed it a lot when I put regular gasoline in it but now it's does it even with super leaded gasoline. Also, just for background info, I only drive it during the winter months.

    This is driving me nuts -- any help would be appreciated.

  • Does this sound like a BCM problem?

    ------------ start ------------------

    Electrical problem
    2002 Chevy Trailblazer 6 cyl Four Wheel Drive Automatic 144000 miles
    We've recently had some strange things happening...

    Interior lights - sometimes they fade and go out as they should, other times they stay on after leaving the car. After a couple of dead batteries, we've been using the override (interior lights always off) button.

    The master panel on the driver's door.. always works for the driver's window and lock, but has occasional failures in regards to operating passenger windows and locks.

    Feedback on locking or unlocking with the remote - used to blink the lights on unlock, blink on single lock command, and blow the horn with a second lock command. Now the results are inconsistent... sometimes nothing, sometimes multiple horn blows, sometimes just the lights blinking.

    And finally, the autolock/unlock seems to have a mind of it's own. Works correctly 90% of the time, but occassionally you will hear it cycle the locks multiple times on either locking or unlocking. It also has at least a few times failed to lock when it normally would as well as cycled the locks while we were traveling at 50+ mph....

    The battery is good. Voltage in the system is normal.

    Are all these items controled by a single module? If so is this something that can be replaced easily. Any clues that you can offer will be greatly appreciated.



    ---------- end -----------------------------

    What does a BCM control?

    Other than various symptoms, is there a definitive test (i.e. stored codes) that tell you if you have a bad one?
  • 2003 trailblazer my rpm will not work what could be wrong. Also the ding sound that it makes when you open the door and the keys are in the ignition does not ding very loud anymore. when to the button on the radio turn the sound to loud but it keeps going back down. need some help
  • mcconemccone Posts: 2
    A weird thing happened to me today and I am hoping someone will be able to help me out. I went to start up my truck tonight and the headlights will not turn on. My parking lights and high beams will work but not the headlights. I dont think it is a fuse because both the driver and passenger are out. Any suggestions??
  • burdawgburdawg Posts: 1,524
    Did the headlamp switch by some chance get moved to the parking lights only position? If so then the auto lamps won't work. If it's like my 02 then the left position is auto, the center is parking only, the right is the headlamp override.
  • The same thing happend to me two days ago. Everylight in the car worked high beams, tail lights, back ups, turn signals, marker lights, interior, fine the four headlight fuses were fine also. So i thought what could be wrong. I broke out the sercuit tester and tested fuses 6 and 3 which your book will show you on page 5-94 as your low beam fuses. But good old General Motors cant make life easy. The dumb asses left the fuses in the trucks for the power adjustable pedals which i don't have. Well luck have it it is fuse number 53 and it was the only fuse that tested bad. I pulled it saw it was blown. I didnt think this would make a difference, but god said let there be light. Check it out it worked for me.
  • gmfan4gmfan4 Posts: 3
    I have 2006 LT TB with the 5.3 V-8, not the EXT. I bought the car back in Aug 2006 and everything has been great...I already have 43,000 mi on it. A couple of things:

    1. When looking under the hood around the battery, there is an on/off switch...I have never seen this before and was wondering if others had this. My vehicle does have an aftermarket anti-theft device, but I never activate came with the you think it could be the aftermarket device? If so, I wonder if I could turn it off. I bought the car new and the dealership had already installed this on the vehicle.

    2. Sometimes, if the vehicle has been sitting overnight or a couple of days, when I crank it up the clock reads 12:00 like the battery was disconnected. All of my pre-set radio channels works fine and are still in memory, but the clock must be rest. Anyone else have this happen? The battery appears strong and is putting out 13-14 volts

    3. When I put the vehicle in park, sometimes (and this is going to sound crazy), the speedometer jumps from 0-40 mph and immediately back only does this once when it happens, and it occurs about twice a month.

    4. Sometimes when I enter the vehicle, the CD charger is making noise like it thinks there is a CD, when I do not have one in. What the heck? I don't even have the key in the ignition and the CD is "shifting" like it is looking for a CD or trying to eject something.

    Thanks for any help. Much appreciated!
  • doug55doug55 Posts: 2
    What is the easiest way to get to the right side marker lamp on a 2004 Trailblazer to replace it.
  • having problem with switch selector,sometimes nothing out of dash vents,then when i turn switch to another mode,say floor vent,i get a steady click noise inside dash,could this be the actuator module,blower settings work fine. any help would be appreciated.thanks woody
  • burdawgburdawg Posts: 1,524
    There was a TSB out for the "mode door actuator" which would make the kind of noise you describe. The only repair was to replace the actuator. I had it done a long time ago but it never really effected the operation of the vents for me, but it may be worse in your case. For me it was only occasional and only a few clicks.
  • thanks for the info. I changed the control module seems to have worked,just a small click every now and then vents workin ok for now.i will keep an eye on actuato thaks wwody
  • did gm cover the mode door actuato after the warranty on tsb.thanks woody
  • burdawgburdawg Posts: 1,524
    It was covered under my extended GMPP after the factory warranty expired.
  • would you happen to know where the actuator is located on your trailblazer.thanks
  • brinakbrinak Posts: 2
    I have an 02 Trailblazer and have had no problems until recently. I was driving on the highway last week with the cruise set on 65 and suddenly the vehicle lost acceleration. The "Service Engine Soon" light was on, but had been off and back on over the course of several days. When I mashed the gas pedal, nothing happened. I pulled over and came to a complete stop, mashed the gas pedal and the vehicle accelerated. I drove about a mile up the road and the same thing happened. I pulled over again and same story. I put the vehicle in 3rd gear and drove about 45 MPH and got the vehicle to the shop. They hooked it up to the diagnostic machine and replaced the MAP sensor and reset the "Service Engine" light. Then next day, the same loss of acceleration happened again but there was no fault light on. I took it back to the shop and they got no faults on the diagnostice check, but eventually determined the MAP sensor they put in was faulty. They replaced the sensor and it drove fine. Now, 3 days later, the exact same thing has happened again and none of the idiot lights are on. Has anyone had anything like this happen?
  • jntjnt Posts: 316
    On the problem of radio losing the clock: it is indicative that battery power to the radio got disrupted by some reason (Aftermarket rewiring? or the control module that controls 12V to radio somehow cycles it on or off incorrectly). When radio loses its power, the clock will be resetted back to 12:00.

    The Station Presets stay since this info is stored in Non Volatile memory (EEPROM) along with most if not all customizations. With older radio without the EEPROM, as soon as the radio loses its 12V power, everything (besides Time of Day) is lost

  • rday2rday2 Posts: 1
    how do you repair a fan wobble on a 2005 trailblazer. i dont know if it is just an idler or what . thanks
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