This comprehensive Dodge Ram 1500, 2500, and 3500 service repair manual covers models from 2003 to 2006, providing detailed instructions for servicing your truck. It is a valuable resource for both professional mechanics and DIY enthusiasts. The manual covers all aspects of the Dodge Ram, from the engine to the body, and includes detailed instructions for removal and installation of components. The manual features step-by-step procedures, illustrations, exploded parts views, and troubleshooting information. Engine codes covered include the 3.7 L 6 cylinder MPI gasoline, 4.7 L 8 cylinder MPI gasoline, 5.7 L 8 cylinder SMPI gasoline, 5.9 L 8 cylinder SMPI gasoline, 5.9 L 6 cylinder Turbo Diesel, 5.9 L 6 cylinder Turbo Diesel High Output, and the 8.0 L 10 cylinder MPI gasoline engine. Body styles covered include the Conventional Cab and Quad Cab Full Rear Doors, with car line shells including the 1500 4x2, 1500 4x4, 2500 4x2, 2500 4x4, 3500 4x2, and 3500 4x4. The manual features detailed chapters with illustrations, diagrams, and troubleshooting information for each system. Content includes sections on lubrication and maintenance, suspension, differential and driveline, brakes, clutch, cooling, audio, chime/buzzer, electronic control modules, engine systems, heated systems, horn, ignition control, instrument cluster, lamps, message systems, power systems, restraints, speed control, vehicle theft security, wipers/washers, wiring, engine, exhaust system, frame and bumpers, fuel system, steering, transmission and transfer case, tires/wheels, body, heating and air conditioning, and emissions control. A component and system index is also included for easy reference.

The Dodge Ram 1500, 2500, and 3500, produced from 2003 to 2006, represent a pivotal generation of full-size pickup trucks from Chrysler's Dodge brand. These trucks were known for their robust construction, powerful engines, and versatile capabilities, attracting a wide range of buyers from everyday commuters to hardcore worksite professionals. The 1500, the flagship model, provided a balance of utility and comfort, featuring a variety of powertrain options, including the fuel-efficient 3.7L V6 and the powerful 5.7L Hemi V8. The 2500 and 3500, designed for heavy-duty hauling and towing, boasted even more robust powerplants like the Cummins 5.9L turbo-diesel I6 and the potent 8.0L Magnum V10. These trucks offered a range of cab configurations, including regular, extended, and crew cab, and bed lengths that accommodated a variety of hauling needs. The 2003-2006 Dodge Ram models were also notable for their upgraded interior appointments, with more comfortable seating, enhanced ergonomics, and available features like leather upholstery and a premium sound system. The introduction of the iconic "Ram" head logo on the grille also cemented the Ram's identity as a distinct brand within the Dodge lineup. The mechanical aspects of these trucks were equally impressive, featuring durable axles, sturdy suspension systems, and advanced braking technology. These trucks were designed for long-lasting durability, capable of handling the toughest jobs and enduring demanding conditions. While the 2003-2006 Dodge Ram trucks have been replaced by newer models, they remain a popular choice for enthusiasts seeking dependable and capable trucks with a classic American design.