GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon Denali 🢒 Preface 🢒 Cautions and Notices 🢒 Drive Belt Tensioner Diagnosis

Inspection Procedure

    Notice: Allowing the drive belt tensioner to snap into the free position may result in damage to the tensioner.

  1. Remove the drive belt. Refer to Drive Belt Replacement .
  2. Position a hex-head socket on the drive belt tensioner pulley bolt head.

    3. Important: Please note that movement of the drive belt tensioner while the engine is operating is considered a normal operating condition. The drive belt tensioner should not be replaced for this normal operating condition.

  3. Move the belt tensioner through the full travel.
    4. • The movement should feel smooth
    • There should be no binding
    • The drive belt tensioner should return freely.
  4. If any binding is observed, replace the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  5. Install the drive belt. Refer to Drive Belt Replacement .