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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 855 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Diagnostic Information and Procedures >> Drive Belt Tensioner Diagnosis >> Inspection Procedure

Inspection Procedure

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Fig 1: Inspecting Drive Belt Tensioner
G02116286Courtesy of GENERAL MOTORS CORP.
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 drive belt tensioner arm will move. Do not replace the drive belt tensioner because of movement in the drive belt tensioner arm.

  1. Remove the drive belt. Refer to DRIVE BELT REPLACEMENT - ACCESSORY  or DRIVE BELT REPLACEMENT - AIR CONDITIONING  .
  2. Move the drive belt tensioner through its full travel.
    • The movement should feel smooth.
    • There should be no binding.
    • The tensioner should return freely.
  3. If any binding is observed, replace the drive belt tensioner. Refer to DRIVE BELT TENSIONER REPLACEMENT - ACCESSORY  or DRIVE BELT TENSIONER REPLACEMENT - AIR CONDITIONING  .
  4. Install the drive belt. Refer to of DRIVE BELT REPLACEMENT - ACCESSORY  or DRIVE BELT REPLACEMENT - AIR CONDITIONING  .
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