please help all input is great on 2001 GMC Jimmy

i have a noise sounds like as if a wheel bearing was going but just had both replaced also the idler arm and pitman arm and both lower ball joints it only occurs when i turn left and going striaght under medium to heavy acceleration i think it might be a motor mount i put the truck into drive and planted the brakes and gave it some gas and vibration sound occured and motor looked like it was going to come out of the engine bay any ideas thanks

by in Hayes, SD on March 18, 2009
1 answer 2 comments
ANSWER by on March 19, 2009
Probably the drivers side motor mount has failed, When the vehicle is in drive and you give it the gas with your foot on the brake and the left side of the motor lifts that means the driverside motor mount has failed. Sometimes when the motor mount is broken it no longer has the rubber cushion between the motor and the frame and will experience vibrations and noises magnified because of the metal to metal contact.
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COMMENT by on March 18, 2009
the noise seems to come from the passenger side
COMMENT by on March 18, 2009
oh and the front brakes