GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC MD Steel Tilt (W Model) 🢒 Engine 🢒 Engine Mechanical - 5.0L and 5.7L 🢒 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. Move the drive 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. Important: Movement of the drive belt tensioner while the engine is operating is a normal operating condition. Do not replace the drive belt tensioner for this normal condition.

  5. Install the drive belt. Refer to Drive Belt Replacement.