Segment:
Heavy-Duty Pickup Truck
Purpose:
Designed for demanding work, towing, and hauling applications.
Competitors:
Ford Super Duty, Chevrolet Silverado HD, GMC Sierra HD.
Drivetrain Options:
Available in 2WD and 4WD configurations.
Cab Styles:
Regular Cab, Club Cab (Quad Cab), Crew Cab.
Bed Lengths:
8-foot bed standard.
Towing Hauling:
Class-leading towing and payload capacities for its era.
Engine Mechanical:
Engine assembly, disassembly, overhaul, cylinder head, block, crankshaft, pistons, connecting rods, camshafts, valve train.
Engine Performance:
Fuel system, ignition system, emissions control, cooling system, lubrication system, turbocharger (if applicable).
Transmission Manual:
NV5600, G56 manual transmission service and repair.
Transmission Automatic:
48RE, NV4500 automatic transmission service and repair.
Drivetrain:
Front and rear axles, differentials, driveshafts, U-joints, transfer case (NV271/NV273).
Suspension:
Front and rear suspension systems, steering linkage, shocks, springs, ball joints, control arms.
Brakes:
Front and rear brake systems (disc/drum), hydraulic system, ABS, parking brake.
Steering:
Power steering system, steering column, steering gear/rack.
Electrical System:
Battery, charging system, starting system, ignition system, lighting, instrument cluster, wiring diagrams.
Body And Chassis:
Frame, body panels, doors, hood, tailgate, interior trim, seats, glass, bumpers.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system components and service.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, pipes.
Scheduled Maintenance:
Oil changes, filter replacements, fluid checks, tire rotations, tune-ups.
Diagnostic Troubleshooting:
Step-by-step diagnostic procedures for various systems and common issues.
Component Repair Overhaul:
Detailed instructions for repairing and overhauling major components and sub-assemblies.
Adjustments:
Valve adjustments, brake adjustments, steering adjustments.
Replacements:
Component replacement procedures for virtually all parts of the vehicle.
Wiring Diagrams:
Detailed electrical schematics for all vehicle systems.
Depth:
Comprehensive; covers everything from basic fluid changes to complete engine and transmission rebuilds, including detailed diagnostics and specifications.
Wheelbase:
140.5 inches (Regular Cab), 160.5 inches (Quad Cab), 165.0 inches (Crew Cab)
Length:
Approx. 238.3 - 260.4 inches
Width:
Approx. 79.1 inches
Height:
Approx. 78.1 - 79.1 inches
Bed Length:
96.2 inches (standard 8-foot bed)
Curb Weight:
Approx. 6,000 - 7,500 lbs depending on configuration
Gcwr:
Up to 23,000 lbs (Cummins Diesel)
NHTSA Rollover Resistance:
3 Stars (typical for era)
ABS:
Standard Anti-lock Braking System (ABS) on all wheels.
Towing Features:
Integrated trailer brake controller wiring (optional), tow/haul mode.
Airbags:
Driver and passenger front airbags.
Seatbelts:
Three-point seat belts with pretensioners.
Oil Change Gasoline:
Every 3,000 - 7,500 miles or 6 months, depending on driving conditions and oil type used (refer to manual for exact recommendations).
Oil Change Diesel:
Every 7,500 miles or 6 months for conventional oil; 15,000 miles or 12 months for synthetic oil (refer to manual).
Fuel Filter Diesel:
Every 15,000 - 30,000 miles (depending on fuel quality and usage).
Air Filter:
Inspect every 15,000 miles, replace as needed.
Transmission Fluid Automatic:
Inspect fluid level periodically, change every 30,000 - 60,000 miles depending on load and conditions.
Transmission Fluid Manual:
Inspect and change every 60,000 - 100,000 miles.
Engine Oil Gasoline:
SAE 5W-30 or 5W-40 (synthetic blend recommended for towing/heavy use).
Engine Oil Diesel:
API CJ-4 or CK-4 synthetic or synthetic blend diesel engine oil (e.g., 15W-40, 5W-40).
Coolant:
Mopar OAT (Orange) Antifreeze/Coolant, 50/50 mix with distilled water.
Transmission Fluid 48Re:
ATF+4 (MS-9602 compliant).
Transmission Fluid Nv5600:
API GL-3 or GL-4 gear oil, SAE 75W-90.
Cummins Injection Pump:
Potential failure of the VP44 injection pump (earlier 2001-2002 models, less common on 2004 but still possible).
Transmission Hard Shifts:
48RE transmission can sometimes exhibit hard shifting due to worn solenoids or valve body issues.
Front End Components:
Wear on ball joints, tie rods, and steering components due to the weight and typical use of heavy-duty trucks.
Exhaust Manifold Cracks:
Cracked exhaust manifolds, particularly on the 5.9L Cummins, can be an issue due to thermal cycling.
Brand History:
Dodge has a long-standing reputation for producing robust trucks, evolving from the original Dodge Power Wagon to the modern Ram trucks.
Third Generation Ram:
The 2004 model is part of the third generation of Ram trucks (2002-2008), which saw significant redesigns in styling, chassis, and powertrains, including the introduction of the HEMI V8 and the common-rail Cummins.
Manufacturing Location:
Saltillo, Mexico; Warren, Michigan, USA