Question about 2004 Chevrolet Impala

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2004 Chevrolet Impala LS Vibration

It's a 2004 Chevrolet Impala LS w/3800 engine, 55K miles. Probably the best car that I have ever owned but it rides like a small car with 50 lbs of tire pressure. It just started one day going straight down the highway for no reason. Initially though that it was one of the new Goodyear tires.

Am having a whole car roughness and a little (just a quiver) front end vibration after approx 30 miles of driving. Have been through several sets of tires of different brands (Goodyear, Kelly). Have had the dealer road force balances several times, all new struts, front brake rotors and both hubs. 4 wheel alignment was all ok. Checked the wheels and tires and they all run totally true with literally no hop or side to side movement. Nothing helps. (Good thing for extended warranty)

Most recently had the steering gear intermediate shaft replaced for steering column clunking that took care of that problem but the roughness is still there. Went to a transmission shop and they said that it is not a tranny problem. Can be driving down the road (any road) and when it gets very noticeably rough I take it out of gear and that has no affect.

Anyone have any ideas ?

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  • 5 more comments 
  • mrjugg Oct 27, 2008

    No the engine is not missing nor does it have a rough idle. The motor does not move. It always vibrates after it is driven approx 20 miles and is very noticable even when taken out of gear at 60-65 MPH. I am beginning to think that it might possibly be an axle or inner CV joint or I am just getting a whole lot of bad tires that have a hard spot on 1 of them.

  • Anonymous Nov 08, 2008

    Hello there. I have a 2004 Impala LS with 76,000 miles and I have the same problem, but only at times. I was having the same problem, I recently had both front end Hub assemblies replaced and it seems to be ok. I am having the same problem with the steering wheel. How much did that cost you to repair? I also had to replace the window motor in my passenger side window.

  • Anonymous Nov 28, 2008

    Uneven tire wear . My Goodyear tires have little wear, but the edges are scalloped and these generate a noise like a wheel bearing. When I approached the Goodyear dealer he said it was the car alignment, checking same was not the cause. I almost had the wheel bearings changed out when we discovered the vibration was coming from the tires..If not a tire defect, then what? Suspension??

  • alpine4x4 Dec 04, 2008

    I have the same vibration issue with my 2004 Impala LS 3.8. It is intermittent and shifting to neutral does not solve it. Shocks, rotors, tires, rims, motor mounts and trans all check out ok. Seems worst at 35 - 45 mph and low engine rpm. Steering wheel does not vibrate. Feels like a front tire with a bulge but is intermittent. The tires are new and it started with the previous set and did not change with the new set.

  • StarKeeper May 11, 2010

    does the car have a rough idle to it... have you openned the hood and watched the motor as it runs? Could be a bushing or just a motor mount problem.

  • dgskroch
    dgskroch Oct 28, 2013

    Replace the driveaxles, the cv joints are worn out.

  • dgskroch
    dgskroch Oct 28, 2013

    replace the driveaxles, the cv joints are worn out.

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  • 25 Answers

Try 35psi in tires, max air pressure on goodyear tires is 44psi, chevrolet recomends 35psi

Posted on Sep 11, 2009

  • dgskroch
    dgskroch Oct 28, 2013

    replace the driveaxles, the cv joints are wornout.

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