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
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2 answers
ANSWER by , 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.
ANSWER by , September 03, 2012
check motor mounts. how does it run?? are you up to date on all your services?? Roy