Express 1/2 Ton Van V6-4.3L VIN W (1999)
3. Observe the drive belt routing for vehicles with air conditioning.
4. Install a 3/8 inch drive wrench on the drive belt tensioner arm and rotate the arm counterclockwise.
5. Install the drive belt over the drive belt tensioner pulley.
6. Slowly release the tension on the drive belt tensioner arm.
7. Confirm that the belt is properly routed.
8. Inspect for the drive belt being properly installed on the pulleys.
9. Avoid mis-positioning the drive belt by one or more grooves.