Sierra 1500 2WD V8-5.3L Hybrid (2004)
Drive Belt Tensioner: Testing and Inspection
Drive Belt Tensioner Diagnosis
Inspection Procedure
1. Notice:
Allowing the drive belt tensioner to snap into the free position may result in damage to the tensioner.
Important:
When the engine is operating the drive belt tensioner arm will move. Do not replace the drive belt tensioner because of movement in the drive belt
tensioner arm.
Remove the drive belt.
2. Move the drive belt tensioner through its full travel.
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The movement should feel smooth.
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There should be no binding.
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The tensioner should return freely.
3. If any binding is observed, replace the drive belt tensioner.
4. Install the drive belt.
