GMC Sierra 1500 Problem Report

GMC Sierra 1500 Rattling Noise From AC Belt Tensioner

(7 reports)

A rattling noise may develop from the AC belt tensioner. This can be caused by an internal fault with the AC compressor, AC performance may also be diminished when this occurs. Our technicians tell us that replacing the ac compressor will commonly correct this concern.


Replaced AC belt tensioner. Bad bearing in the original. -
engine running fine but now has started making rattling noise like something is loose. The noise is coming from the front of the engine where serpentine belt and fan is -
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