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vibration
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  1. G8 GXP Talk (V8)
    Greetings- Just in the last few days my G8 GXP m6 has starting making a bit of a vibration in the engine area, its almost like its running a heavy duty fan. At first I thought it was due to heat and added some coolant/water mix but that doesnt seem to have fixed it. But problem remains, car...
  2. G8 GT Talk (V8)
    This may have been covered in other threads, but I searched and couldn't find an exact match. '09 G8 GT, 47K miles. Recently developed a metallic-sounding vibration behind the dash at 1250 RPM, regardless of gear. Does it every time, whether accelerating or decelerating past 1250. Sounds...
  3. Suspension / Brakes
    The G8 has 4 lower control arms but this is a how-to for replacing the thinner 2 only. Here's a pic of my old ones: Symptoms: - vibration in car when applying the brakes, especially if stop is more aggressive - vibration when taking long curves at road speed (worse if road is rippled) -...
  4. Drivetrain Tech
    Ever since I've purchased this car there has always been a slight rumble/roar coming form the rear. This car has always either has the Nitto 555 tires on it or the winter shoes, so I had always figured the noise was because of the lack of sidewall or amount of grip, depending on the season...
  5. V8 Engine Tech (L76/LS3)
    I have an unpleasent vibration at 1900-2300 RPM. Thought it was prop shaft, but the vibration is present in park while reving. Crank pully/balancer does wobble a bit at idle but is smooth with a little gas. I have read other post relating to the same thing, but they have given me little info...
  6. Drivetrain Tech
    I've had my '09 GT since July 2009, and always had the annoying vibration at highway speed. I factored out the AFM by putting the tranny in M6. The car is bone stock other than debadging. My dealer offered no solution, had a dismissive attitude, and was not interested in looking into the...
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