vibration

  1. T

    Help Request: Rough Idle, low mpg

    Getting some vibration, very slight shudder at idle on a recently acquired 99 LT, unknown history other than mnt records, which show it was getting hot a few years back, getting 11 MPG in city. So far: a) I probed plug wires, didnt quantify drop, but seems each plug responded, b) was...
  2. T

    Recommendation for cylinder power tester scan tool

    I am wanting to a do a cylinder power distribution test on a 99 LT with a 5.7 L in it. I am specifically wanting to use a scan tool and just toggle on/off each cylinder and watch the RPM response, as a first step. Does anyone know if any of the really cheap ELM327 devices can do this...
  3. S

    Vibration Issue @ speed over 55 MPH

    Hello Fellow Tahoe Owners, I need some help. I have a 2012 Tahoe. I have a vibration at speeds over 55 mph. The truck has been doing this for the past two years and I cant find the problem, nor can my mechanic. It feels like a tire balance issue, but I have been through 3 sets of tires and...
  4. Murder n Mayhem

    New A4x Hum & Vibration - 2003 Tahoe 5.3 4x4

    Was dark & pouring rain so doing more road test tomorrow but figured would see if anyone has dealt with this problem because I know something is going to need to be fixed. 2003 Tahoe LT (250k on 5.3\4x4\3:73) when driving in Ax4 rigs developed a slight vibration (can only be felt in pedals &...
  5. L

    Rims Shaking on 22s with factory struts

    Just put 22s on the Tahoe and I'm running 305s with no rub. The issue is when I get on the highway and hut 60mph and up the steering wheel shaking begins. I've force balanced and everything so now I'm trying to determine are my factory struts in front too short considering they only have a...
  6. N

    2012 front end vibration

    I have a 2012 tahoe 4wd with 27,000 miles. There is a vibration in the left front. I checked the wheel bearings, they appear to be tight with no play. I also installed new brake pads and rotors. The noise still presists. The noise is most prevalent at low speed (15 to 25mph) and increases in...
  7. wesmegan

    AC noise, chirping then vibration when accelerating only

    Started with chirping under hood near center of dash on a trip last Monday, only when AC is on and only when accelerating from a stop to about 30mph. Then, day 2, add a vibrating noise to the chirping, which sounds like something is about to break, and stops if I let off acceleration or turn...
  8. TomC65

    Sunroof noise

    I have a problem with the built in sunroof wind deflector making a buzzing sound. It's only when the roof is closed and at 35mph and up. I tried putting a little grease in slots on the sides where the aluminum deflector is pushed down, but that only worked for a day or two. Any suggestions...
  9. D

    Vibration at 65 - 70mph

    I have a 2000 Tahoe with a vibration through car that appears between 65-70mph. The vibration is not isolated at steering wheel. I had a Tire Center check the tires for balance. They said the front suspension was tight but that it was bad U-joints on rear drive shaft. I check for myself and...
  10. W

    2001 Tahoe 4x4 5.3L tow pkg. Shaking

    Thank you for reading this and any insight you may offer. I have a vibration that starts at around 60, peaks at 65, then calms down at 70. At 80 it is still there only the amplitude is diminished. The shake is over 200HZ. Also if I go over bumps on the hi-way the front will shake violently...
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