2020 Ram 1500 Service and Repair Manual

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Factory-Grade Data

2020 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

  • SLT Crew Cab Pickup 4-Door
  • Rebel Crew Cab Pickup 4-Door
  • Laramie Extended Cab Pickup 4-Door
  • HFE Extended Cab Pickup 4-Door
  • Hemi Sport Standard Cab Pickup 2-Door
  • Limited Crew Cab Pickup 4-Door
  • Laramie Sport Crew Cab Pickup 4-Door
  • Sport Crew Cab Pickup 4-Door
  • Tradesman Extended Cab Pickup 4-Door
  • Tradesman 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

  • 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

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Vehicle Safety Data

2020 Ram 1500 Recalls & Complaints

NHTSA #19V40700031/05/2019Component: AIR BAGS

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 1500 vehicles. The flash memory of the Occupant Restraint Controller (ORC) may become corrupted, disabling the vehicle's air bags and seat bel

Consequence

Disabled air bags and seat belt pretensioners increase the risk of injury in the event of a crash.

Remedy

Chrysler will notify owners, and dealers will reprogram the ORC or replace it as necessary, free of

NHTSA #20V51300027/08/2020Component: VEHICLE SPEED CONTROL:ACCELERATOR PEDAL

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 1500 vehicles equipped with adjustable pedals. In certain accelerator pedal positions, the floormats may prevent the pedal from returning to t

Consequence

A pedal that does not return as expected may affect the vehicle's deceleration, thereby increasing t

Remedy

Chrysler will notify owners, and dealers will modify the driver's floormat to remove the potential f

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 #20V37400025/06/2020Component: AIR BAGS

Chrysler (FCA US LLC) is recalling certain 2020 Ram Promaster vans and 1500 pickups. The affected vehicles may have an improperly crimped diffuser in the side curtain airbag which may result in the d

Consequence

In the event of a crash, if the diffuser detaches from the inflator during air bag deployment, the a

Remedy

FCA US will notify owners, and dealers will replace the side curtain air bag assemblies, free of cha

NHTSA #20V58000024/09/2020Component: SEAT BELTS

Chrysler (FCA US LLC) is recalling certain 2019 Jeep Wrangler and Ram 2500, 2019-2020 Ram 1500 and 2020 Jeep Gladiator vehicles. In the event of a crash, a front seat belt retractor may not properly

Consequence

In the event of a crash, if the front seat belts fail to lock, there is an increased risk of injury.

Remedy

Chrysler will notify owners, and dealers will replace the front seat belt retractors, free of charge

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 #21V63200012/08/2021Component: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR

Chrysler (FCA US, LLC) is recalling certain 2015-2020 Ram 1500 Classic, 2015-2016 Ram 3500, and Ram 2500 vehicles, and 2016 Ram 3500 Cab Chassis with a gross vehicle weight rating less than 10,000 lbs

Consequence

A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in th

Remedy

Dealers will inspect and replace as necessary, the SABIC assemblies, free of charge. Interim owner

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 #20V20800009/04/2020Component: VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES

Chrysler (FCA US LLC) is recalling certain 2019-2020 Ram 1500, 1500 Classic and Jeep Compass vehicles. The windshield wiper arm or arms may loosen, possibly causing the wipers to not operate properly

Consequence

Reduced visibility increases the risk of a crash.

Remedy

Chrysler will notify owners, and dealers will tighten the wiper nuts, free of charge. The recall be

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 #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

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

Showing the 8 most recent of 1200 technical service bulletins on file with NHTSA.

20220218Component: SERVICE BRAKESCrash reported3 injured

Truck was going at 40 MPH and power steering went out, brakes went out and truck started to accelerate resulting in a serious crash. Vehicle was totaled out but not inspected by Dodge. There was no wa

20220218Component: STEERINGCrash reported3 injured

Truck was going at 40 MPH and power steering went out, brakes went out and truck started to accelerate resulting in a serious crash. Vehicle was totaled out but not inspected by Dodge. There was no wa

20220218Component: VEHICLE SPEED CONTROLCrash reported3 injured

Truck was going at 40 MPH and power steering went out, brakes went out and truck started to accelerate resulting in a serious crash. Vehicle was totaled out but not inspected by Dodge. There was no wa

20260112Component: AIR BAGSCrash reported2 injured

On Thursday, January 8, 2026, I was operating my vehicle when an oncoming single vehicle traveling in the opposite direction entered a curve at an excessive speed, lost control, and crossed into my la

20241105Component: AIR BAGSCrash reported1 injured

The contact owned a 2020 Ram 1500. The contact stated that while driving 30 MPH when a medical emergency was experienced causing him to lose consciousness, as a result, the vehicle drifted off the roa

Showing the 5 most serious of 864 complaints filed with NHTSA.

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