2020 Ram 2500 Service and Repair Manual

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Factory-Grade Data

2020 Ram 2500 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

  • Big Horn Extended Crew Cab Pickup 4-Door
  • Big Horn Standard Cab Pickup 2-Door
  • Limited Crew Cab Pickup 4-Door
  • Lone Star Extended Crew Cab Pickup 4-Door
  • HD Limited Rambox Crew Cab Pickup 4-Door
  • Laramie Limited Crew Cab Pickup 4-Door
  • Limited Extended Crew Cab Pickup 4-Door
  • Tradesman Crew Cab Pickup 4-Door
  • SLT HD Crew Cab Pickup 4-Door
  • HD Limited Crew Cab Pickup 4-Door
  • Laramie Longhorn Crew Cab Pickup 4-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
  • Laramie Extended Crew Cab Pickup 4-Door
  • Laramie Longhorn Extended Crew Cab Pickup 4-Door
  • Power Wagon Crew Cab Pickup 4-Door
  • Laramie Limited 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

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Vehicle Safety Data

2020 Ram 2500 Recalls & Complaints

NHTSA #22V03500027/01/2022Component: VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 vehicles, Ram 3500 Cab Chassis, 4500 Cab Chassis, 5500 Cab Chassis and 3500 Cab Chassis with a gross vehicle weight rating (

Consequence

Reduced visibility increases the risk of a crash.

Remedy

Dealers will tighten the wiper nuts, free of charge. Owner notification letters were mailed Februar

NHTSA #20V04300024/01/2020Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 2500 and 3500 Pickup vehicles equipped with six-speed automatic (68RFE) transmissions. A build up of pressure and heat inside the transmission

Consequence

The leaking transmission fluid may contact the turbocharger or another ignition source within the en

Remedy

Chrysler will notify owners, and dealers will replace the transmission valve body separator plate an

NHTSA #21V88000012/11/2021Component: FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP

Chrysler (FCA US, LLC) is recalling certain 2019-2020 Ram 2500, 3500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. The High Pressur

Consequence

An engine stall increases the risk of a crash.

Remedy

Dealers will replace the HPFP, update the Powertrain Control Module (PCM) software, and inspect and

NHTSA #22V83500010/11/2022Component: POWER TRAIN:AUTOMATIC TRANSMISSION

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

NHTSA #20V19100010/09/2020Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Chrysler (FCA US LLC) is recalling certain 2020 Jeep Gladiator and Jeep Cherokee, 2019-2020 Ram 1500 Pickup, Ram 2500 Pickup, Ram 3500 Pickup, Chrysler Pacifica, Dodge Durango, Jeep Grand Cherokee, Je

Consequence

The lingering rearview image can distract the driver, increasing the risk of a crash.

Remedy

Chrysler has notified owners, and dealers will update the radio display software, free of charge. O

NHTSA #22V14000010/03/2022Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED

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

NHTSA #20V20700009/04/2020Component: STRUCTURE

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 2500 and Ram 3500 Pick-up trucks equipped with an accessory bed step. In certain side loading conditions, the bed step may unexpectedly fail w

Consequence

A bed step that unexpectedly fails while in use increases the risk of injury to the user.

Remedy

Chrysler will notify owners, and dealers will replace the bed step support brace, free of charge. T

NHTSA #22V90400008/12/2022Component: STRUCTURE:BODY:TAILGATE:HINGE AND ATTACHMENTS

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

NHTSA #20V62200008/10/2020Component: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

Chrysler (FCA US LLC) is recalling certain 2020 Ram 2500 and 1500 vehicles. The driver side mirror glass can detach from the backing plate and no longer provide a reflective surface. As such, these

Consequence

Missing driver side mirror glass reduces visibility and increases the risk of a crash.

Remedy

Chrysler will notify owners, and dealers will replace the driver side mirror glass, free of charge.

TSB #11032842

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

TSB #11032824

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

TSB #11032647

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

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 #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

TSB #11031241

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

TSB #11030269

Backup Camera Poor Image Quality Inspection

TSB #11030229

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): **P0111-00 - In

Showing the 8 most recent of 708 technical service bulletins on file with NHTSA.

20240327Component: SERVICE BRAKES, HYDRAULICCrash reported1 injured

The contact owns a 2020 Ram 2500. The contact stated while driving at approximately 45 MPH, the contact swerved to the left to avoid crashing into a deer. The contact stated that when he attempted to

20240327Component: ELECTRONIC STABILITY CONTROL (ESC)Crash reported1 injured

The contact owns a 2020 Ram 2500. The contact stated while driving at approximately 45 MPH, the contact swerved to the left to avoid crashing into a deer. The contact stated that when he attempted to

20230124Component: FUEL SYSTEM, DIESELCrash reported1 injured

The contact owns a 2020 Ram 2500. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) however, the part to do the recall repair was not yet available. The conta

20230124Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULECrash reported1 injured

The contact owns a 2020 Ram 2500. The contact received notification of NHTSA Campaign Number: 21V880000 (Fuel System, Diesel) however, the part to do the recall repair was not yet available. The conta

20221114Component: POWER TRAINCrash reported

The vehicle was placed into park and the "P" began flashing by when I stepped out of the vehicle it began moving backwards. I jumped into the vehicle and the gear selection showed the vehicle in reve

Showing the 5 most serious of 227 complaints filed with NHTSA.

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