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2020 Ram 1500 Classic Service and Repair Manual
Regular price
$49.99 USD
Unit price
Covers all 2020 1500 Classic trims — SLT Crew Cab Pickup 4-Door, ST Extended Cab Pickup 4-Door, Tradesman Extended Cab Pickup 4-Door +5 more ·
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Complete repair procedures
Wiring diagrams & schematics
Torque specifications
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2020 Ram 1500 Classic Service and Repair Manual
Regular price
$49.99 USD
Unit price
2020 Ram 1500 Classic 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
- ST Extended Cab Pickup 4-Door
- Tradesman Extended Cab Pickup 4-Door
- Express Standard Cab Pickup 2-Door
- Tradesman Crew Cab Pickup 4-Door
- SLT Standard Cab Pickup 2-Door
- Warlock Crew Cab Pickup 4-Door
- Express Crew Cab Pickup 4-Door
- Warlock Extended Cab Pickup 4-Door
- Special Service Crew Cab Pickup 4-Door
- Express Extended Cab Pickup 4-Door
- ST Standard Cab Pickup 2-Door
- SLT Extended Cab Pickup 4-Door
- ST Crew Cab Pickup 4-Door
- Tradesman Standard Cab Pickup 2-Door
Engines covered
- 3.6L 3604CC 220Cu. In. V6 FLEX DOHC Naturally Aspirated
- 5.7L 345Cu. In. V8 GAS 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
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
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
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
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
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
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
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
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
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
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 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.
No service bulletins
No technical service bulletins on file with NHTSA for the 2020 Ram 1500 Classic.
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
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
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
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
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.