2021 Ram 1500 Classic Service and Repair Manual

This factory service and repair manual for the 2021 Ram 1500 Classic lists six trims for this model year: Express, Night Edition, SLT, Special Service, Tradesman and Warlock. Buyers still chose between a flex-fuel 3.6L V6 with double overhead cams and a gasoline 5.7L V8 with overhead valves, both naturally aspirated. Cab choices stayed at three: crew cab and extended cab pickups with four doors, plus a two-door standard cab.

Engines covered

• 3.6L V6 (220 cu in) — DOHC, naturally aspirated, flex-fuel
• 5.7L V8 (345 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

• 4-door crew cab pickup
• 4-door extended cab pickup
• 2-door standard cab pickup

Trims covered

• Express
• Night Edition
• SLT
• Special Service
• Tradesman
• Warlock

Known issues on the 2021 1500 Classic. From Express to Warlock, and from standard cab to crew cab, the 2021 1500 Classic relies on the same broad systems. Its V6 runs on flex-fuel through a DOHC valvetrain; its V8 uses an OHV design and gasoline. For both, the manual supplies specifications and procedures for the engine, fuel system, ignition and cooling. Torque values carry through the transmission, drivetrain, brakes, suspension and steering, and wiring diagrams with diagnostics address the electrical system and body of the three cab styles.