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2021 Ram 3500 Service and Repair Manual
Regular price
$49.99 USD
Unit price
Covers all 2021 3500 trims — Tradesman Cab & Chassis 4-Door, Laramie Cab & Chassis 4-Door, Limited Longhorn Extended Crew Cab Pickup 4-Door +4 more ·
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2021 Ram 3500 Service and Repair Manual
Regular price
$49.99 USD
Unit price
2021 Ram 3500 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- 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
Engines covered
- 6.4L 6424CC 392Cu. In. V8 GAS OHV Naturally Aspirated
- 6.7L 408Cu. In. l6 DIESEL OHV Turbocharged
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured wi
Consequence
An air bag that deploys improperly can increase the risk of injury in a crash.
Remedy
Dealers will replace the SABIC assemblies, free of charge. Owner notification letters were mailed J
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 3500, 2500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. An electrical sh
Consequence
A vehicle fire increases the risk of injury.
Remedy
Owners are advised to park these vehicles outside of buildings or structures, and not near other veh
Chrysler (FCA US, LLC) is recalling certain 2021 Ram 2500, 3500, and 3500, 4500, and 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may occur in the S
Consequence
A vehicle fire increases the risk of injury.
Remedy
Dealers will inspect and, if needed, replace the Solid State Intake Heater Grid Relay ("Relay"); if
FCA US, LLC (Chrysler) is recalling certain 2020-2023 Ram 2500 and 2020-2022 Ram 3500 vehicles. A build-up of pressure and heat inside the transmission may result in a transmission fluid leak from th
Consequence
Leaking transmission fluid may contact an ignition source within the engine compartment, increasing
Remedy
Dealers will replace the transmission dipstick and transmission vent assembly, free of charge. Owne
Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 2500 and 2021-2022 Dodge Durango vehicles, and 2019-2022 3500 cab chassis with GVWR less than 10,000 lbs. The ABS control module software may
Consequence
An ESC malfunction indicator light that fails to illuminate during an electronic stability control p
Remedy
Dealers will update the ABS control module software, free of charge. Owner notification letters wer
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 2500, 3500, 3500 Cab Chassis, and 4500, 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short may o
Consequence
An electrical short in the relay can result in an engine compartment fire with the ignition on or of
Remedy
Owners are advised to park outside and away from structures until the recall repair is complete. De
Chrysler (FCA US, LLC) is recalling certain 2019-2022 Ram 1500, 2500, and 3500 pickup trucks. The tailgate may not latch properly due to misaligned tailgate strikers, which could result in the tailga
Consequence
An unintended tailgate opening while driving may result in a loss of unsecured cargo, possibly creat
Remedy
Dealers will inspect the tailgate striker alignment to the box latch and adjust, if necessary, free
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 1500, Ram 2500, Ram 3500, Ram 4500, and Ram 5500 vehicles. The steering column control module may cause the driver's side air bag not to deplo
Consequence
A driver's side air bag that does not deploy as intended increases the risk of injury in a crash.
Remedy
Dealers will replace the steering column control module, free of charge. Owner notification letters
Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
On Cummins diesel applications that are for 2019 and newer the bpro part 1BP00507AB can on occasions create a check engine light. In these situations, it is recommended to use the appropriate Mopar air filter originally installed on the veh
RADIATOR - ENGINE COOLING
Radio Message "Power Surge On USB Detected" Customers may comment on the following: The radio displays the message: Power surge on USB hub detected Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no
Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): P0731-00 - Gear 1 Shift Incorrect Ratio (This D
Radio Message "Power Surge On USB Detected" Customers may comment on the following: The radio displays the message: Power surge on USB hub detected Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no
Replace K1 Clutch / Input Shaft Assembly Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): P0731-00 - Gear 1 Shift Incorrect Ratio (This D
Radio Message "Power Surge On USB Detected" Customers may comment on the following: The radio displays the message: Power surge on USB hub detected Fig. 1. NOTE: After the message appears, no USB devices function in the hub (no charging, no
Showing the 8 most recent of 564 technical service bulletins on file with NHTSA.
The contact filed the complaint on behalf of the customer, who was the owner of a 2021 Ram 3500. The contact stated that while the owner was driving at an undisclosed speed, the vehicle caught on fire
On [XXX] while I was driving in Reno Nevada with the truck without warning smoke started to come out of the hood, fluid was coming out from under truck, fire department came made sure fire was extingu
Our vehicle was involved in a total loss fire from the engine compartment while driving. We were driving the unit and noticed smoke, when we were merging to pull of the road flames started coming up a
Our vehicle was involved in a total loss fire from the engine compartment while driving. We were driving the unit and noticed smoke, when we were merging to pull of the road flames started coming up a
The transmissionâs light came on saying that it was heated. I parked as soon as possible and thatâs when the flames were coming out of the hood. I did burned my hands trying to put out the fire wi
Showing the 5 most serious of 87 complaints filed with NHTSA.
Other Years of the Ram 3500
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