1. Locate the serpentine belt tensioner. It is usually located on the passenger side of the engine near the top.
2. Loosen the tensioner bolt to release tension on the belt. Use a wrench to turn the bolt counterclockwise.
3. Move the tensioner arm to increase or decrease belt tension.
4. Retighten the tensioner bolt to secure the belt in place.
Tips:
It's advisable to refer to the vehicle's service manual for the specific adjustment procedures and specifications relevant to your 2003 Dodge HEMI. If you're uncomfortable performing this task or are unsure about how to properly adjust the belt tension, it's best to have it done by a qualified mechanic.