This designation covers the Ram HD chassis cab lineup (3500 through 5500), Ram's heaviest-duty trucks, offered with the Cummins diesel and available 4WD. The 2013 Ram HD 3500/4500/5500 factory service manual documents the specific engine, transmission, and heavy-duty axle service for this model year.
Cummins Diesel and Heavy-Duty Chassis Service
The HD lineup's Cummins diesel requires specific diesel-only maintenance documented in the factory manual, including the DEF system and fuel filter service, along with the heavy-duty rear axle and chassis cab-specific service procedures for 4500/5500 trims.
What This Ram HD 3500/4500/5500 Manual Covers
- Cummins diesel — DEF system, fuel filter service, oil specification
- Heavy-duty axle and chassis cab service procedures
- 4WD transfer case and differential fluid service (where equipped)
- Complete electrical diagrams for all trim and chassis configurations