Quote:
Originally Posted by top tiger  My 2004 V8 AWD has a rumble/vibration at idle with the air conditioning on. Turning off the A/C or raising engine speed eliminates the vibration. It feels/sounds like being next to a car with one of those annoying, booming bass systems. Anyone else encountered/corrected this? |
Something is probably mechanically loose. GM puts tons of effort into getting a smooth idle in both the PCM program code and mechanically.
Take her in.