Market Position:
The Dodge RAM 3500 HD represents a pinnacle of heavy-duty capability in the pickup truck market, designed for commercial use, towing, and demanding work environments. This manual positions itself as the essential resource for maintaining and repairing these robust vehicles.
Competitive Analysis:
Competes directly with Ford Super Duty F-350/F-450 and Chevrolet Silverado HD 3500/4500 series trucks. The RAM 3500 HD is known for its strong powertrain options, robust chassis, and towing prowess.
Key Features:
Comprehensive coverage of all model years 2012-2015, detailed diagnostic procedures, extensive wiring diagrams, accurate torque specifications, and step-by-step repair instructions.
Systems Covered:
Engine Mechanical, Engine Electrical, Fuel System, Cooling System, Exhaust System, Ignition System, Powertrain Control Module (PCM), Transmission (Automatic & Manual), Driveline, Axles, Suspension (Front & Rear), Steering, Brakes (ABS, Parking Brake), HVAC, Electrical System (Wiring Diagrams, Body Control Module - BCM, Powertrain Control Module - PCM, Integrated Power Module - IPM), Lighting, Body & Interior, Chassis, Frame, Wheels & Tires, Diagnostic Trouble Codes (DTCs), Emissions Control.
Chassis Frame Repair:
Includes inspection and repair procedures for the heavy-duty frame, crossmembers, and mounting points.
Body Exterior Repair:
Coverage for body panels, doors, tailgate, bumpers, lighting assemblies, and glass replacement.
Electrical Wiring Diagrams:
High-detail, component-specific wiring diagrams for all major electrical systems, including power distribution, lighting, engine controls, and body electronics.
Fuel System Diagnostics:
Diagnostic procedures for fuel pumps, injectors, fuel lines, and fuel tank components.
Powertrain Control Module:
Information on PCM diagnostics, programming, and replacement procedures.
Procedures Included:
Routine Maintenance, Troubleshooting Guides, Diagnostic Procedures, Component Removal & Installation, Repair Procedures, Overhaul Instructions, Wiring Harness Repairs, System Inspections, Torque Specifications, Lubrication Charts, Specifications & Data.
Drivetrain Component Repair:
Detailed procedures for front and rear axle service, transfer case overhaul, driveshaft maintenance, and U-joint replacement.
Brake System Diagnostics:
Comprehensive diagnostics for ABS, hydraulic brake systems, parking brake mechanisms, and brake pad/rotor replacement procedures.
HVAC System Service:
Procedures for A/C system charging, compressor replacement, heater core service, and climate control module diagnostics.
Suspension Component Replacement:
Detailed instructions for replacing ball joints, tie rods, control arms, shocks/struts, and leaf springs.
Steering System Repair:
Service for steering gear, power steering pump, steering column, and tie rod ends.
Wheel Alignment:
Specifications and procedures for front and rear wheel alignment.
Technical Depth:
Comprehensive, from basic fluid changes and component checks to complex engine and transmission rebuilds, advanced electrical diagnostics, and body panel repairs. Suitable for professional technicians and experienced DIY enthusiasts.
Diagnostic Trouble Codes:
Extensive listing of Diagnostic Trouble Codes (DTCs) with corresponding symptoms, causes, and diagnostic flowcharts.
Torque Specifications Engine:
Precise torque specifications for all engine fasteners, critical for proper engine assembly and reliability.
Rebuild Instructions:
Complete step-by-step rebuild instructions for major components like the engine and transmission.
Standard Transmission Diesel:
6-speed G56 Manual Transmission
Optional Transmission Diesel:
68RFE 6-speed Automatic Transmission
Transmission Features Automatic:
Electronically controlled, adaptive shift logic, torque converter lock-up.
Transmission Fluid Automatic:
Mopar ATF+4 (or equivalent specification)
Transmission Fluid Manual:
Mopar Manual Transmission Lubricant (or equivalent specification for G56)
Wheelbase Options:
140.5 inches (Regular Cab), 160.5 inches (Crew Cab/Mega Cab Short Bed), 179.5 inches (Crew Cab/Mega Cab Long Bed)
Bed Length Options:
6'4" (Short Bed), 8'0" (Long Bed)
Gvwr:
Over 10,000 lbs (up to 11,500 lbs depending on configuration)
Gcwr:
Up to 30,000 lbs (for diesel models)
Max Conventional Towing:
Up to 23,000 lbs (diesel with specific configurations)
Max Gooseneck Towing:
Up to 25,750 lbs (diesel with specific configurations)
Service Intervals Oil Diesel
Oil Change Interval Diesel:
Every 7,500 miles or 6 months, whichever comes first, under normal driving conditions. Severe driving may require more frequent changes.
Engine Oil Diesel:
SAE 15W-40 API CJ-4 rated synthetic or synthetic blend engine oil.
Coolant Diesel:
OAT (Organic Additive Technology) Heavy Duty Extended Life Antifreeze/Coolant, typically Mopar OAT or equivalent meeting Chrysler MS-12090.
Fuel Filter Diesel:
Replacement interval typically every 15,000 miles or as per severe duty recommendations. Filter part numbers vary by engine variant and year (e.g., Mopar 68048553AA).
Known Issues:
Common issues can include EGR cooler failures (especially in earlier models or under heavy towing), DPF regeneration issues, DEF system faults, and potential for injector issues in high-mileage diesel engines. Also, certain transmission or driveline components might require attention under extreme use.
Tire Pressure Front Rear:
Typically around 60-80 PSI for heavy-duty tires, refer to vehicle's tire placard for exact specifications based on load and tire size.
