The Ram 1500 is Ram's full-size pickup (independent from Dodge since 2010), offered with V6, HEMI V8, and eTorque mild-hybrid power and available 4WD with air suspension on higher trims. The 2021 Ram 1500 factory service manual documents the specific engine, transmission, and 4WD system for this model year.
HEMI Engine and Air Suspension Service
The Ram 1500's HEMI V8 uses Multi-Displacement System cylinder deactivation, requiring specific diagnostic procedures documented in the factory manual, along with eTorque mild-hybrid system service where equipped. Many trims use adaptive air suspension, requiring specific diagnostic procedures for the compressor and height sensors.
What This Ram 1500 Manual Covers
- HEMI V8 or V6 — engine-specific specs, MDS diagnostics, eTorque service
- Air suspension diagnostic and component replacement (where equipped)
- 4WD transfer case and differential fluid service
- Complete electrical diagrams for all trim levels