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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Mechanic has replaced front motor mounts which has not helped lessen the loud vibration while sitting at stoplight in gear. Turning A/C on seems to make it a little but worse. Putting car in neutra...
Usually stops if put into neutral. I cleaned throttle body.
The vibration goes away if put in neutral or park, or when the engine is warm. I have 125,000 miles on it and the transmission fluid & filter was changes at 70K and 120K. what is wrong?
Ok so I have the same problem, started around 125k but only in the winter, summertime was fine. Car now has 145k and the problem is there year round. Just like everybody else same symptoms however ...

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