How to Replace a Serpentine Belt on a 2003 Dodge Pickupby Matthew Ferguson
Some vehicles employ multiple belts to drive the engine accessories. Conveniently, the 2003 Dodge pickup uses just one--a serpentine belt. The serpentine belt follows a circuitous path along the front of the engine, passing over the various engine accessory pulleys. For a 2003 Dodge pickup, the serpentine belt should be checked every 6,000 miles or six months, and replaced if frayed or worn. A worn belt will have a shiny (glazed) appearance due to friction caused by operation.
Open the hood of the vehicle after turning the engine off. Locate the tensioner assembly. Like the engine accessories surrounding it, the tensioner features a pulley, over which the serpentine belt passes. There is a bolt at the center of this pulley.
Rotate the bolt, using a socket wrench, to release tension on the belt. For standard Dodge V6 and V8 models, the tensioner will rotate clockwise. For heavy-duty V8 and V10 Dodge pickups, the tensioner will rotate counter-clockwise.
Separate the loosened serpentine belt from each pulley, then remove the belt from the engine compartment.
Release the tensioner bolt gradually.
Rotate the tensioner pulley in the same manner as above.
Route the replacement serpentine belt over the various pulleys. If you're unsure of the proper routing, study the belt routing decal printed on the top of the radiator.
Release the belt tensioner carefully, allowing the belt to settle in place.