GM Service Manual Online
For 1990-2009 cars only

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 for the accessory belt or A/C belt.
  2. Position a hex-head socket on the belt tensioner pulley bolt.
  3. Move the belt tensioner through it's full travel.
  4. • The movement should feel smooth.
    • There should be no binding.
    • The belt tensioner should return freely.
  5. If any binding is observed, replace the tensioner. Refer to Drive Belt Tensioner Replacement for the accessory belt or A/C belt.
  6. Install the drive belt. Refer to Drive Belt Replacement for the accessory belt or A/C belt.