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Drive Belt Tensioner Diagnosis

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Diagnosis consists of a function check on the automatic belt tensioner and a visual check on the belt and the components linked to the belt.

  1. GM3137464

    Apply the tension to the belt tensioner via the cast projection (1) in the direction of the arrow, counterclockwise, and allow to slide back slowly.

  2. The tensioner must slide back to the initial position.
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