Astro Van AWD V6-4.3L VIN X (2003)
3. Observe 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 tensioner arm.
7. Inspect for the drive belt being properly installed on the pulleys.