engine vibration on 2005 Chevrolet Trailblazer

vibration at low rpm when at a stop. vibration increases when ac is on.

by in San Antonio, TX on September 03, 2012
2 answers
ANSWER by on September 03, 2012
check motor mounts. how does it run?? are you up to date on all your services?? Roy
ANSWER by on September 03, 2012
Motor mounts are common, but could be something as simple as cleaning the throttle body out. When its dirty, the vehicle idles a bit lower than normal, even worse when the A/C is on. This can exaggerate normal vibrations.
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