The service and repair manual for the 2021 Ram 3500 — 6.4L V8 and 6.7L I6 engines, 20 trims. Matched to this exact model year, so the specifications and sequences are the ones Ram published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2021 |
|---|---|
| Engines | 6.4L V8 — 392 cu in, OHV 6.7L I6 — OHV, turbocharged |
| Trims | Tradesman Cab & Chassis 4-Door · Laramie Cab & Chassis 4-Door · Limited Longhorn Extended Crew Cab Pickup 4-Door · Big Horn Extended Crew Cab Pickup 4-Door · Big Horn Standard Cab Pickup 2-Door · Limited Crew Cab Pickup 4-Door +14 |
| Federal record | 8 recalls · 87 complaints · 564 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2021 3500 manual
03 / ContentsSections in the manual
- Quick Lookups 2,679
- General Information 2,404
- Accessories & Equipment 10,560
- Heating, Ventilation & A/C (HVAC) 851
- Body & Frame 2,238
- Maintenance 50
- Brakes 1,212
- Restraints 3,220
- Drivelines & Axles 154
- Steering 490
- Electrical 7,107
- Suspension 797
- Engine Mechanical 650
- Transmission 1,216
- Engine Performance 3,982
- Front 107
04 / Known issuesRecalls on federal record for the 2021 3500
- Air Bags — side/window › curtain · 21V925000An air bag that deploys improperly can increase the risk of injury in a crash.
- Electrical System — wiring › relays/solenoids · 21V798000A vehicle fire increases the risk of injury.
- Electrical System · 21V163000A vehicle fire increases the risk of injury.
- Power Train — automatic transmission · 22V835000Leaking transmission fluid may contact an ignition source within the engine compartment, increasing.
- Service Brakes, Hydraulic — antilock/traction control/electronic limited · 22V140000An esc malfunction indicator light that fails to illuminate during an electronic stability control p.
- Electrical System — wiring › relays/solenoids · 23V060000An electrical short in the relay can result in an engine compartment fire with the ignition on or of.
- Structure — body › tailgate › hinge and attachments · 22V904000An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creat.
- Air Bags — frontal · 25V765000A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Owners have filed 87 complaints and Ram has issued 564 technical service bulletins for the 2021 3500. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2021 3500 manual
Is this manual specific to the 2021 3500?
Yes. It is the OEM manual matched to the 2021 model year, covering the 6.4L V8 and 6.7L I6 across the Tradesman Cab & Chassis 4-Door, Laramie Cab & Chassis 4-Door, Limited Longhorn Extended Crew Cab Pickup 4-Door, Big Horn Extended Crew Cab Pickup 4-Door, Big Horn Standard Cab Pickup 2-Door, Limited Crew Cab Pickup 4-Door, SLT Cab & Chassis 4-Door, Limited Longhorn Crew Cab Pickup 4-Door, Tradesman Cab & Chassis 2-Door, Lone Star Extended Crew Cab Pickup 4-Door, Limited Extended Crew Cab Pickup 4-Door, Tradesman Crew Cab Pickup 4-Door, SLT Cab & Chassis 2-Door, Lone Star Crew Cab Pickup 4-Door, Lone Star Standard Cab Pickup 2-Door, Big Horn Crew Cab Pickup 4-Door, Laramie Crew Cab Pickup 4-Door, Limited Cab & Chassis 4-Door, Laramie Extended Crew Cab Pickup 4-Door, Tradesman Standard Cab Pickup 2-Door trims. Specifications and procedure sequences are the ones Ram published for this year.
What 2021 3500 problems does it help with?
8 recalls are on federal record for the 2021 3500, covering air bags, electrical system, power train. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Ram dealers.
Does it include 2021 3500 wiring diagrams?
Yes — the complete wiring diagrams for the 2021 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $49.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther 3500 years and 2021 Ram models
2024 3500 · 2023 3500 · 2022 3500 · 2020 3500 · 2019 3500 · 2018 3500 · 2017 3500 · 2016 3500 · 2015 3500 · all 14 years
2021 Ram 1500 · 2021 Ram 1500 Classic · 2021 Ram 2500 · 2021 Ram 4000 · 2021 Ram 4500 · 2021 Ram 5500 · 2021 Ram 700 · 2021 Ram ProMaster 1500 · 2021 Ram ProMaster 2500 · 2021 Ram ProMaster 3500 · 2021 Ram ProMaster City · 2021 Ram ProMaster Rapid · every 2021 model