Ford Super Duty (F-250/F-350), Chevrolet Silverado HD (2500HD/3500HD), GMC Sierra HD (2500HD/3500HD).
Key Features
Vehicle Strengths:
Robust chassis, powerful engine options, high towing and payload capacities, reputation for durability.
Manual Value Proposition:
Provides authoritative guidance for maintaining and repairing one of the most capable heavy-duty trucks on the market, crucial for owners and technicians who rely on its performance.
Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, whichever comes first.
Oil Change Diesel:
Every 7,500-10,000 miles (12,000-16,000 km) or 6 months, whichever comes first (using appropriate diesel oil).
Air Filter Replacement:
Every 15,000-30,000 miles (24,000-48,000 km) or annually, depending on operating conditions.
Fuel Filter Replacement Diesel:
Every 15,000 miles (24,000 km) or as recommended by the manual (crucial for HPCR systems).
Transmission Fluid Change:
Automatic: 30,000-60,000 miles (48,000-96,000 km). Manual: Inspect periodically, typically serviced upon clutch replacement or as per manual.
Fluid Specifications
Coolant Type:
Mopar Antifreeze/Coolant (MS-9769) or equivalent HOAT (Hybrid Organic Acid Technology) coolant, 50/50 mix with distilled water.
Brake Fluid Type:
DOT 3
Power Steering Fluid:
ATF+4 or Mopar Power Steering Fluid
Known Issues
Diesel Glow Plugs:
Glow plug failures can lead to hard starting in cold weather.
Diesel Injection System:
HPCR system components (injectors, fuel pump) can be sensitive to fuel quality and require specialized service.
Transmission Clutch Wear:
Wear on the clutch and dual-mass flywheel in manual transmission models, especially under heavy use.
Suspension Components:
Wear on ball joints, tie rod ends, and bushings due to the heavy-duty nature of the truck.
Rear Main Seal Leaks:
Occasional rear main crankshaft seal leaks, particularly on higher mileage diesel engines.
HVAC Blend Door Actuators:
Failure of HVAC blend door actuators can lead to improper temperature control.
📚 Vehicle History
Brand Heritage
Dodge Truck Legacy:
Dodge has a long history in the truck market, with the Ram brand established as a distinct entity in 1994. The Ram trucks are known for their toughness and capability.
Model Evolution
Ram Hd Development:
The third-generation Ram (2003-2009) introduced significant chassis and powertrain updates, including the robust coil-spring front suspension on some models and the introduction of the 6.7L Cummins in later years (though not covered in this specific manual). The 5.9L Cummins was a hallmark of this generation, renowned for its durability.
The Ram 3500, particularly with the Cummins diesel, has historically been a segment leader in towing and durability, frequently cited by automotive journalists and owners for its capability.
Cummins Reputation:
The 5.9L Cummins engine consistently received accolades for its robust design, fuel efficiency for its class, and longevity.
Ratings
Consumer Reports:
While specific model year ratings vary, this generation of Ram trucks generally performed well in categories related to powertrain and build quality, though some interior and electrical components might have had average ratings.
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