2021 Ram 5500 Service and Repair Manual

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Covers all 2021 5500 trims — Base Cab & Chassis - Crew Cab 4-Door, Base Cab & Chassis - Conventional ·
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2021 Ram 5500 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

  • Base Cab & Chassis - Crew Cab 4-Door
  • Base Cab & Chassis - Conventional

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
NHTSA #21V79800014/10/2021Component: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

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

NHTSA #21V16300011/03/2021Component: ELECTRICAL SYSTEM

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

NHTSA #23V06000009/02/2023Component: ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS

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

NHTSA #25V76500006/11/2025Component: AIR BAGS:FRONTAL

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

TSB #11033308

Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.

TSB #11033001

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

TSB #11032990

RADIATOR - ENGINE COOLING

TSB #11032827

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

TSB #11032650

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

TSB #11032344

Squeak Or Squawk Noise Coming From Either Side Door Of The Vehicle, It Could Be Just One Door Or More. The Noise Can Be Present In Either The Upper Or The Lower Hinge.

TSB #11031471

Light Random Tick Noise From The Engine.

TSB #11031466

Diagnostic Trouble Code (DTC) P2459-00 Particulate Filter Regeneration Too Frequent Setting in the Powertrain Control Module (PCM) or Under Fueling or Over Fueling Condition After Fuel Injector(s) Replacement

Showing the 8 most recent of 354 technical service bulletins on file with NHTSA.

20230325Component: SERVICE BRAKESCrash reported

The wheel studs broke going down the Interstate causing the wheels to come off into oncoming traffic. This caused damage to the wheel studs, lug nuts, brake calipers,brakes, rotors, rims and tires.

20230325Component: WHEELSCrash reported

The wheel studs broke going down the Interstate causing the wheels to come off into oncoming traffic. This caused damage to the wheel studs, lug nuts, brake calipers,brakes, rotors, rims and tires.

20230325Component: SUSPENSIONCrash reported

The wheel studs broke going down the Interstate causing the wheels to come off into oncoming traffic. This caused damage to the wheel studs, lug nuts, brake calipers,brakes, rotors, rims and tires.

20260113Component: ELECTRICAL SYSTEMFire reported

The contact owned a 2021 Ram 5500. The contact stated that the vehicle is a flatbed tow truck, and while one of his drivers was driving at 48 MPH, the tow truck driver noticed that white/gray smoke wa

20231005Component: FIRERELATED

See attached document from complainant

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