2021 Ram 1500 Service and Repair Manual

4.7 · Trusted by 14,000+ mechanics & DIYers
Regular price $49.99 USD
  • Lightning-Fast Downloads
    Optimized files — even slow connections handle it
  • Instant Search & Navigation
    Jump to any procedure or spec with one click
  • Print One or All Pages
    Bring only the pages you need to the shop
  • Covers Every System & Component
    Every procedure for the 2021 Ram 1500
Sample Preview

Unlock the Full Manual

Complete repair procedures
Wiring diagrams & schematics
Torque specifications
Full search & bookmarks
$49.99
Buy 2+ Manuals, Save 20% Discount applied automatically at checkout
20% OFF
Secure Checkout
No Subscriptions
Factory-Grade Data

2021 Ram 1500 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

  • TRX Crew Cab Pickup 4-Door
  • SLT Crew Cab Pickup 4-Door
  • Rebel Crew Cab Pickup 4-Door
  • Laramie Extended Cab Pickup 4-Door
  • HFE Extended Cab Pickup 4-Door
  • Limited Crew Cab Pickup 4-Door
  • Laramie Sport Crew Cab Pickup 4-Door
  • Sport Crew Cab Pickup 4-Door
  • Limited Longhorn Crew Cab Pickup 4-Door
  • Tradesman Extended Cab Pickup 4-Door
  • Tradesman Crew Cab Pickup 4-Door
  • TRX Launch Edition Crew Cab Pickup 4-Door
  • Rebel Extended Cab Pickup 4-Door
  • Lone Star Extended Cab Pickup 4-Door
  • Longhorn Crew Cab Pickup 4-Door
  • Hemi Sport Crew Cab Pickup 4-Door
  • Laramie Longhorn Crew Cab Pickup 4-Door
  • Special Service Crew Cab Pickup 4-Door
  • Lone Star Crew Cab Pickup 4-Door
  • Sport Extended Cab Pickup 4-Door
  • Big Horn Extended Cab Pickup 4-Door
  • Big Horn Crew Cab Pickup 4-Door
  • Laramie Crew Cab Pickup 4-Door
  • ST Standard Cab Pickup 2-Door

Engines covered

  • 6.2L 6166CC 376Cu. In. V8 GAS OHV Supercharged
  • 5.7L 345Cu. In. V8 GAS OHV Naturally Aspirated
  • 3.6L 3604CC 220Cu. In. V6 GAS DOHC Naturally Aspirated
  • 3.0L 2987CC 182Cu. In. V6 DIESEL DOHC Turbocharged
  • 3.6L 3604CC 220Cu. In. V6 MILD HYBRID EV-GAS (MHEV) DOHC Naturally Aspirated
  • 5.7L 345Cu. In. V8 MILD HYBRID EV-GAS (MHEV) OHV Naturally Aspirated

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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Vehicle Safety Data

2021 Ram 1500 Recalls & Complaints

NHTSA #22V63800025/08/2022Component: BACK OVER PREVENTION:DISPLAY FUNCTION

Chrysler (FCA US, LLC) is recalling certain 2020-2021 Jeep Wrangler, RAM 1500 and 2021 Jeep Gladiator vehicles. A radio software error may prevent the rearview image from displaying. As such, these

Consequence

A rearview camera that does not display an image reduces the driver's rear view, increasing the risk

Remedy

Dealers will update the radio software, free of charge. Owner notification letters were mailed Octo

NHTSA #21V92500024/11/2021Component: AIR BAGS:SIDE/WINDOW:CURTAIN

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

NHTSA #21V91800023/11/2021Component: BACK OVER PREVENTION:DISPLAY FUNCTION

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 pickup trucks. The Trailer Reverse Steering Control Module (TRSCM) may prevent the rearview image from displaying. As such, these vehicles f

Consequence

A rearview camera that does not display an image reduces the driver's rear view, increasing the risk

Remedy

Dealers will update the TRSCM software. Interim owner notification letters were mailed on January 1

NHTSA #22V76700013/10/2022Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Chrysler (FCA US, LLC) is recalling certain 2020-2022 Jeep Wrangler, Ram 1500, and 2021-2022 Jeep Gladiator vehicles equipped with 3.0L diesel engines. The high pressure fuel pump (HPFP) may fail, ca

Consequence

An engine stall can increase the risk of a crash.

Remedy

Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessar

NHTSA #23V26500013/04/2023Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles equipped with 5.7L eTorque engines. The powertrain control module software may cause an incorrect fuel mixture condition in the engi

Consequence

An engine stall can increase the risk of a crash.

Remedy

Dealers will update the Powertrain Control Module calibration software, free of charge. Owner notif

NHTSA #21V69800009/09/2021Component: TIRES:TEMPORARY/EMERGENCY SPARE TIRE

Chrysler (FCA US, LLC) is recalling certain 2021 Ram 1500 vehicles. The incorrect-size spare tire may have been installed, which does not match the tire size and inflation pressure information on the

Consequence

A driver that relies on the incorrect spare tire inflation pressure on the tire placard label may in

Remedy

Dealers will replace the spare tire assembly, free of charge. The owner notification letter was mail

NHTSA #23V05900009/02/2023Component: BACK OVER PREVENTION:DISPLAY FUNCTION

Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 1500 and 2023 Ram 2500 vehicles. The trailer reverse steering control module (TRSCM) may prevent the rearview image from displaying when the

Consequence

A rearview image that does not display while in reverse decreases the driver's visibility of the rea

Remedy

Dealers will update the TRSCM software, free of charge. Owner notification letters were mailed Marc

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 #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

NHTSA #21V03700001/02/2021Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Chrysler (FCA US, LLC) is recalling certain 2020-2021 Ram 1500 Classic SLT trucks. Certain vehicles were built without the retaining clip that secures the master cylinder push rod to the brake pedal,

Consequence

A separated brake pedal can result in the driver being unable to apply the service brakes, increasin

Remedy

Owners are advised to not drive their vehicles until they receive instructions on the inspection and

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 #11032831

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): P219A - Bank 1 Air-Fuel Ratio Imbalance Ban

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 #11032654

Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): P219A - Bank 1 Air-Fuel Ratio Imbalance Ban

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 #11031688

Door Latch, Handle And Ajar Additional Service Information.

TSB #11031461

WARNING: Shorting the 48V output stud to the 12V output stud can cause immediate and irreversible damage to the power pack unit. Always use insulated tools and protective stud covers when performing service operations. NOTE: A loose or high

Showing the 8 most recent of 1098 technical service bulletins on file with NHTSA.

20210730Component: AIR BAGSCrash reported2 injured

The contact owns a 2021 RAM 1500. The contact stated that while his son-in-law was driving at 30 MPH, another vehicle had rear ended his vehicle. The force of the collision then propelled the vehicle

20210512Component: AIR BAGSCrash reported2 injured

WHILE NEARLY COMPLETING A RIGHT TURN INTO A PRIVATE DRIVEWAY WITH A SPEED UNDER 3 MPH AND APPROXIMATE 20 DEGREE INCLINE I WAS STRUCK BY GMC TERRAIN JUST BEHIND THE RIGHT REAR TIRE WITH POSTED SPEED

20260105Component: AIR BAGSCrash reported1 injured

High impact vehicle accident, with major damage. Drivers airbag did not deploy.

20251202Component: AIR BAGSCrash reported1 injured

The contact owns a 2021 RAM 1500. The contact stated that while driving at 47 MPH, towards a four-way intersection, the vehicle coming off the road on the left side of the vehicle ran a stop causing a

20250909Component: AIR BAGSCrash reported1 injured

The contact owned a 2021 RAM 1500. The contact stated that while driving at 35 MPH, another vehicle collided with his vehicle on the front passenger side of the vehicle after running a red light. The

Showing the 5 most serious of 1086 complaints filed with NHTSA.

All Model Years

Other Years of the Ram 1500

Need a manual for a different year? Browse every Ram 1500 we cover.

Explore More

More Ram Models

Browse service and repair manuals for other Ram models in our catalog.