i have a 2005 chevy trailblazer that vibrates. gets worse when air conditioner is on. ive put new tires,new frontend alignment,new sparkplugs,changed my harmonic motor mounts are engine light is not on so i cannot figure it out. hope you can help.thank you bruce leisenring


does the AC work? I would suspect the electric clutch on the AC compressor. I have had one (years ago… actually it WAS on a Chevy too!) get loose. it stayed on the compressor, but shook like heck. had to cut the belt to get home. installed a new one and problem solved.


ac works fine


thanks cappy