GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 374176  Size: SH
  1. Install a 3/8 inch drive wrench on the tensioner arm and rotate the arm counterclockwise.

  2. Object Number: 240478  Size: SH
  3. Remove the drive belt from the drive pulleys (if equipped with a single generator).

  4. Object Number: 279365  Size: SH
  5. Remove the drive belt from the drive pulleys (if equipped with dual generators).
  6. Slowly release the tension on the tensioner arm.

Installation Procedure

    Important: Refer to the Underhood Label for the proper drive belt routing graphic.


    Object Number: 240478  Size: SH
  1. Install the belt over all the pulleys except the tensioner arm (if equipped with a single generator).

  2. Object Number: 279365  Size: SH
  3. Install the drive belt over all the pulleys except the tensioner arm (if equipped with a dual generators).

  4. Object Number: 374176  Size: SH
  5. Install a 3/8 inch drive wrench on the tensioner arm and rotate the arm counterclockwise.
  6. Slowly release the tension on the tensioner arm.

  7. Object Number: 665064  Size: SH
  8. Inspect for the drive belt being properly install on the pulleys.

  9. Object Number: 665067  Size: SH
  10. Avoid mis-positioning the drive belt by one or more grooves.

  11. Object Number: 665072  Size: SH
  12. Confirm for the proper drive belt size and the correct drive belt routing by observing the location of the fix pointer and index marks on the drive belt tensioner. With a new drive belt installed the fix pointer should align within the indentation on the drive belt tensioner.

  13. Object Number: 665075  Size: SH
  14. With a used drive belt installed the fix pointer should not align past the index marks.
  15. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls-6.5L (L65).