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Q: what causes reduced engine power light to come on? on 2005 Chevrolet Trailblazer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
a whining noise comes from under the hood when the key is turned to acc. sounds to me like it is coming from the throttle body assembly
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