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ok, my girlfriend's brother is too goddamn lazy to register and post this himself. he has a '99 yukon with the 350, just had a new belt put on 2 months ago but it's squealing again. what would you do? i said take it back to the stealership, if that doesn't work, get a new truck.
 

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Are you sure its the belt squealing? If it is, I would check to make sure all the pulleys are lined up like they should be. Has it ever been in a wreck?

My dads suburban had a messed up harmonic balancer, wasn't on the crank all the way, and therefore nor was the pulley. It was just enough so the belt would ride over the back flange. Some belts would be torn to shreds in 50 miles, some would last for months. He got really good at changing belts on teh freeway... Got it fixed though and its just fine.
 
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