2020 Ram 5500 Service and Repair Manual

This factory service and repair manual for the 2020 Ram 5500 documents a Base-trim truck with a gasoline engine and a diesel engine to choose from. The gasoline unit is a 6.4L V8, 392 cubic inches and naturally aspirated. The diesel is a 6.7L turbocharged inline-six of 408 cubic inches. Overhead valves are common to both. Two bodies are listed: a 4-door crew cab and chassis and a conventional cab and chassis. Procedures, torque values and wiring diagrams address the engines, drivetrain, brakes and electrical system.

Engines covered

• 6.4L V8 (392 cu in) — OHV, naturally aspirated, gasoline
• 6.7L inline-six (408 cu in) — OHV, turbocharged, diesel

Body styles covered

• 4-door cab & chassis, crew cab
• cab & chassis, conventional

Trims covered

• Base

Known issues on the 2020 5500. The 2020 5500 is named in 6 recalls. Certain 2020 Ram 5500 trucks with the High Output 6.7L diesel had too little warmup protection, so the connecting rod bearings could run short of oil film until the engine reached temperature, risking rod failure, a punctured block and fire. Certain trucks with the 6.7L turbo diesel could have their high-pressure fuel pump fail and stall. Because printed guidance overstated how tight the flanged lug nuts should be, certain trucks risked a snapped wheel stud. Of 8 complaints, 2 cited seat belts and 2 hydraulic service brakes; 1 reported a crash, 1 a fire and 1 an injury. Engine and fuel system procedures and specifications are covered.