Pontiac Grand Am

Why does your 96 grand am make a squealing sound when you first start it If the ac is off the noise continues When the ac is turned on the noise stops any suggestions?

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2005-10-20 05:45:06
2005-10-20 05:45:06

Often it's the alternator. When the engine is first started the regulator may be forcing the alternator to work a little harder so that the battery can be charged quickly. The extra power necessary to turn the alternator during that time can cause the belt to slip and squeal. 96 GM vehicles use a tensioner to maintain proper tension on the serpentine belt so unless the tensioner spring is weakened, you may need to replace the belt.

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