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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1554 (Engine Mechanical (Introduction) - 5.7L) >> Diagnostic Information and Procedures >> Drive Belt Tensioner Diagnosis

Drive Belt Tensioner Diagnosis

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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 belt tensioner arm will move. Do not replace the belt tensioner because of movement in the belt tensioner arm.
  1. Remove the drive belt. Refer to Drive Belt Replacement - Accessory or Drive Belt Replacement - Air Conditioning .
  2. Position a hex-head socket on the belt tensioner pulley bolt.
  3. Move the belt tensioner through its full travel.
    • The movement should feel smooth.
    • There should be no binding.
    • The belt tensioner should return freely.
  4. If any binding is observed, replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement - Accessory or Drive Belt Tensioner Replacement - Air Conditioning .
  5. Install the drive belt. Refer to Drive Belt Replacement - Accessory or Drive Belt Replacement - Air Conditioning .
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