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Chevy Tahoe Maintenance and Repair

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  • g8trtahoeg8trtahoe Posts: 1
    I recently purchased a 2009 Tahoe Hybrid with 5400 miles. Last night while driving simultaneosly the service stabillitrak/brakes/traction control warning lights and warning messages came on and the brakes did not function. Car at dealer now. Anyone have any ideas as to what would have caused this?
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,415
    What do you mean "not function". If they didn't work, how did you ever stop the car?

    Perhaps you had a bad sensor or loss of hydraulic pressure boosting. I'd certainly read the trouble codes for further diagnosis.

    MODERATOR

  • dantheman3dantheman3 Posts: 14
    After many strange noises, I took my 2003 to the dealer. They changed the AC compressor and its seized over after start up. Changed another one, same thing. Changed condesor and accumulator still not fixed. They contacted GM tech support and they are reccomending changing out the lines or the computer itself. I already paid for 1 compressor and told them I wont pay for anything else. Tahoe only has 68k runs perfect (except for this issue). I suggested this could be a service bulletin or recall. They have had it for 4 days. Anyone else out there with this issue.
  • My gf's 2006 Tahoe makes probably the same noise. It emanates from under the car, rear-ish, possibly passenger side. She is very worried about it but the best I can relate it to is a metallic vibration, very quickly, very fast, somewhat loud, but doesn't seem ominous. It is not a "grind" or "squeal". It seems it may be a bracket of some sort. I have had the car up and used a rubber mallet to knock this or that, including the exhaust system and everything is solid. She passed the recent state inspection.

    Recently, while in a parking lot, another Tahoe pulled in the vicinity and we heard the exact same noise. I should have went to the owner and asked about it. That I heard the exact same noise from another Tahoe eases my mind on it a bit, but not my gf. It is, after all, her truck.

    It is only reproducible some of the time. Very slow speeds, barely accelerating, or when coming to a stop, but is NOT brake related. It is heard when the accelerator is pressed lightly. This would make it seem some kind of metallic bracket picking up vibration underneath. It is a very distinct sound, but certainly hard to describe in type-written form!
  • gmcustsvcgmcustsvc Posts: 4,055
    Hello 44woot44,
    Have you had anyone look at the vehicle to find out what the sound is? Thank you,
    Mariah GM Customer Service
  • The culprit was a fan clutch which became inoperative and was knocking out the compressor. Runs perfect again.
  • No, Mariah. Haven't had the vehicle checked anywhere other than state inspection service. It is such a randomly occurring noise / vibration, that a shop would have difficulty finding the culprit I believe. I can drive her truck for long or short distances and hear the noise only once.
  • gmcustsvcgmcustsvc Posts: 4,055
    Hello 44woot44,
    If the noise is a concern you want to get checked I can set up a case for you with an agent. They will require you to take it into the dealership to be diagnosed. In order to set this up I will need you to email me your contact information, VIN, current mileage, dealership and best time to contact you. You can get my email by clicking on gmcustsvc. Thank you,
    Mariah GM Customer Service
  • 44woot44, you describe the same issue we recently started experiencing with our 04 Tahoe. We hear a loud metallic vibration in short bursts, sometimes when accelerating, sometimes when decelerating, sometimes not at all - very random. It sounds like it's emanating from the rear of the vehicle.
    We took it to a Chev. dealer for diagnosis and were told it was the rear brakes and proceeded with replacement of the pads, rotors, and parking brake shoes etc. The sound did not go away and before we could return it to the dealer, the transmission went out. We just picked up our Tahoe yesterday from an independent repair shop (I do not trust the service at the Chevy dealer), running great - except . . . we still hear the intermittent metallic vibration. Needless to say, $$$$ later we're very frustrated. We now know the metallic vibration noise is NOT the brakes nor the transmission. Any clues from your experience??
  • what is ghe problem if the leak is coming from the opening where the driverside axil is going in the front differential
  • kiawahkiawah Posts: 3,666
    Bad bearing and seal.
  • Did you ever find a solution to your problem? I have the same exact issue. I have a new exhaust (cat and muff), filters, fuel regulator and filter (pressure is good), plugs, wires, cap and rotor. On high rev engine gets rough and if I stay on it it trips the service light with P0300. I saw that someone sent you an email suggesting bad coil/ignition module,or bad pcm. Did this fix your problem? I have complete lost my patience with this!!!...thanks
  • Just replaced my transmission, so I haven't been able to worry with anything else. Had it at the dealer's for the repair and they could never trace down the noise, so I have just learned to live with it. Thanks for asking.
  • 1999 Tahoe...I have a new exhaust (cat and muff), Mass Aire Flow Sensor, filters, fuel regulator and filter (pressure is good), plugs, wires, cap and rotor. On high rev engine gets rough and if I stay on it it trips the service light with P0300. If it starts to misfire and I let off , bringing down the RPM, it goes back to normal. Private mechanics, dealers have no answers. I joined this forum because quite honestly I am out of options....HELP!!!
  • kiawahkiawah Posts: 3,666
    edited September 2010
    Possibly intake manifold leaking ?
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,415
    edited September 2010
    In addition to kiawah's good suggestion------Here's what GM says:

    "Recommendation/Instructions:
    If the published misfire diagnostic does not isolate the cause, perform the following suggestions as necessary:
    Perform a fuel injector balance test for all 8 cylinders. If a fuel injector concern exists, it is possible to misfuel an entire bank of the engine, causing multiple cylinders on the same bank to misfire even though the root cause is a single fuel injector.
    Inspect O2 sensor connections on the misfiring bank for corrosion or water intrusion. If water intrusion is found on the right bank, it may be due to the AC Evaporator Condensation dripping onto the O2 sensor harness. If this condition is found, reposition and shield the harness to prevent a repeat concern and repair the connections.
    Check for excessive exhaust backpressure using the restricted exhaust diagnosis.
    Swap the Position 1 O2 sensors side to side to see if the misfires move to the other bank of the engine. If so, replace the O2 sensor.

    Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed."

    MODERATOR

  • Intake was leaking a year ago and that issue was corrected.
  • O2 sensors were checked, one replaced. Fuel injectores were already checked and one replaced...no other fuel concerns at this point
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,415
    I think switching the 02 sensor side to side is a clever diagnostic that GM suggests.

    Just because something was replaced doesn't mean it's any good---this assumption has tripped me up before. I don't even presume something new out of the box is automatically "good" and can be discounted.

    Hard problems need a strict attitude I think--that is, very methodical, even tedious, if you will.

    MODERATOR

  • chek2chek2 Posts: 3
    I have a 03 Suburban and I recently began hearing a flutter like sound when I accelerate. It is similiar to the sound you would hear if you put a index card in a oscillating fan. It's not a very prominent sound when I'm driving in traffic, but when it's quiet or if I'm driving along the side of a building or in between buildings, it's a lot more noticeable. I have taken it to the repair shop, but it was noisy and hard to hear....and trying to describe it is difficult so they haven't been able to help me. I thought it might be a fuel injector or fuel system problem so I added some fuel injector cleaner, but no change. Any ideas on what could be the problem? My big girl has been good to me and I want to be good to her, and keep her running. :shades: I just need to know what to fix. :confuse: Help!
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