2018 Ram 1500 Service and Repair Manual

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Factory-Grade Data

2018 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

  • Rebel Crew Cab Pickup 4-Door
  • HFE Extended Cab Pickup 4-Door
  • Limited Crew Cab Pickup 4-Door
  • Laramie Limited Crew Cab Pickup 4-Door
  • Tradesman Crew Cab Pickup 4-Door
  • Lone Star Extended Cab Pickup 4-Door
  • Express Crew Cab Pickup 4-Door
  • Laramie Longhorn Crew Cab Pickup 4-Door
  • Outdoorsman Crew Cab Pickup 4-Door
  • SXT Crew Cab Pickup 4-Door
  • Lone Star Crew Cab Pickup 4-Door
  • Lone Star Standard Cab Pickup 2-Door
  • Big Horn Extended Cab Pickup 4-Door
  • Laramie Crew Cab Pickup 4-Door
  • ST Crew Cab Pickup 4-Door
  • Tradesman Standard Cab Pickup 2-Door
  • Sport Standard Cab Pickup 2-Door
  • SLT Crew Cab Pickup 4-Door
  • ST Extended Cab Pickup 4-Door
  • SXT Standard Cab Pickup 2-Door
  • Laramie Extended Cab Pickup 4-Door
  • Outdoorsman Extended Cab Pickup 4-Door
  • Big Horn Standard Cab Pickup 2-Door
  • Sport Crew Cab Pickup 4-Door
  • Tradesman Extended Cab Pickup 4-Door
  • Express Standard Cab Pickup 2-Door
  • SLT Standard Cab Pickup 2-Door
  • SXT Extended Cab Pickup 4-Door
  • Special Service Crew Cab Pickup 4-Door
  • Sport Extended Cab Pickup 4-Door
  • Big Horn Crew Cab Pickup 4-Door
  • Express Extended Cab Pickup 4-Door
  • SLT Extended Cab Pickup 4-Door
  • ST 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
  • 3.0L 2987CC 182Cu. In. V6 DIESEL DOHC 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

2018 Ram 1500 Recalls & Complaints

NHTSA #19V32400025/04/2019Component: POWER TRAIN:DRIVELINE:DRIVESHAFT

Chrysler (FCA US LLC) is recalling certain 2018-2019 Ram 1500 pickup trucks. The rear driveshaft may have an incomplete weld fusion between the tube and tube yoke, which may lead to weld cracking or

Consequence

A fractured rear driveshaft could detach from the vehicle and become a road hazard, or it may result

Remedy

FCA US will notify owners, and dealers will replace the rear driveshaft, free of charge. The recall

NHTSA #19V75700024/10/2019Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCUL

Chrysler (FCA US LLC) is recalling certain 2014-2019 Ram 1500 and 1500 Classic Pickup trucks equipped with 3.0L Eco Diesel engines. The Exhaust Gas Recirculation (EGR) cooler may crack and allow pre-

Consequence

Combustion in the intake manifold can increase the risk of a fire.

Remedy

Chrysler will notify owners, and dealers will replace the EGR cooler, free of charge. Dealers will

NHTSA #18V55600023/08/2018Component: POWER TRAIN:AXLE ASSEMBLY

Chrysler (FCA US LLC) is recalling certain 2018-2019 RAM 1500 trucks. The rear differential may have been insufficiently filled, possibly resulting in its failure.

Consequence

If the rear axle assembly fails, it can cause a loss of drive or the rear wheels may lock up. Eithe

Remedy

Chrysler will notify owners, and dealers will inspect the rear axle oil level. Rear axles with an i

NHTSA #20V47500013/08/2020Component: ENGINE AND ENGINE COOLING:ENGINE:DIESEL

Chrysler (FCA US LLC) is recalling certain 2014-2018 Ram 1500 and 2014-2016 Jeep Grand Cherokee vehicles equipped with 3.0L diesel engines. The crankshaft position sensor tone wheel may delaminate ca

Consequence

An engine stall can increase the risk of a crash.

Remedy

FCA US will notify owners, and dealers will update the powertrain control module software to maintai

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 #25V59200011/09/2025Component: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR

Chrysler (FCA US, LLC) is recalling certain 2018 Ram 1500, Ram 2500, and Ram 3500 vehicles. The right and left side curtain air bag inflators may rupture due to a manufacturing defect.

Consequence

An inflator rupture may result in sharp metal fragments striking occupants, resulting in injury.

Remedy

Dealers will replace one or both side curtain air bags, as necessary, free of charge. Owner notifica

NHTSA #18V52400009/08/2018Component: ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD

Chrysler (FCA US LLC) is recalling certain 2018 Jeep Renegade, Compass and Grand Cherokee, RAM 1500 and Promaster, Fiat 500x, Dodge Journey, Challenger, Charger and Durango and Chrysler 300x vehicles,

Consequence

A vehicle stall can increase the risk of a crash.

Remedy

Chrysler will notify owners, and dealers will replace the powertrain control module, free of charge.

NHTSA #22V40600009/06/2022Component: FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP

Chrysler (FCA US, LLC) is recalling certain 2014-2020 Jeep Grand Cherokee, and 2014-2019 Ram 1500 vehicles equipped with 3.0L diesel engines. A high pressure fuel pump (HPFP) failure may introduce in

Consequence

Fuel starvation may result in an unexpected loss of drive power, increasing the risk of a crash.

Remedy

Dealers will replace the HPFP, and inspect and replace, if necessary, additional fuel system compone

NHTSA #19V34700009/05/2019Component: LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH

Chrysler (FCA US LLC) is recalling certain 2015-2017 Ram 1500, 2500 and 3500 pickup trucks equipped with an 8 foot bed and a power locking tailgate. Chrysler is also recalling all 2013-2014 and 2018

Consequence

If the tailgate opens while the vehicle is being driven, cargo may fall out the vehicle and create a

Remedy

Chrysler will notify owners, and dealers will repair the tailgate latch, free of charge. The recall

NHTSA #23V41100008/06/2023Component: ENGINE AND ENGINE COOLING

Chrysler (FCA US, LLC) is recalling certain 2014-2019 Ram 1500 and 2014-2020 Jeep Grand Cherokee vehicles equipped with 3.0L Diesel engines. The crankshaft position sensor tone wheel may delaminate,

Consequence

An engine stall can increase the risk of a crash.

Remedy

Dealers will update the powertrain control module software to maintain vehicle propulsion, free of c

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 #11031241

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

TSB #11030138

The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV, 8HP75-LCV, 8HP90, 8HP95. Transmissions may exhibit the following dia

TSB #11030035

Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On

TSB #11029770

Service transmission/check engine warning indicator for the 850RE, 8HP50, 8HP70, 8HP75, 8HP75-PHEV transmissions that have fault codes P07E4, P1DB2, P0716, P1B14, P0733, P1D90, P1DB7, P1B13.

TSB #11028904

Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes (DTCs), or Battery Warning Lamp On

TSB #11027837

Water Pump & Chain Case Cover

TSB #11027836

Water Pump & Chain Case Cover

Showing the 8 most recent of 493 technical service bulletins on file with NHTSA.

20190925Component: AIR BAGSCrash reported5 injured

I WAS UNABLE TO STOP VEHICLE AS I WAS APPROACHING AN INTERSECTION ON A CITY STREET WENT TO PRESS ON THE BRAKES ALL THE LIGHTS STARTED FLASHING, BRAKE SYSTEM FLASHED, NO TRACTION LIGHT CAME ON, VEHICL

20190925Component: SERVICE BRAKESCrash reported5 injured

I WAS UNABLE TO STOP VEHICLE AS I WAS APPROACHING AN INTERSECTION ON A CITY STREET WENT TO PRESS ON THE BRAKES ALL THE LIGHTS STARTED FLASHING, BRAKE SYSTEM FLASHED, NO TRACTION LIGHT CAME ON, VEHICL

20190925Component: ELECTRICAL SYSTEMCrash reported5 injured

I WAS UNABLE TO STOP VEHICLE AS I WAS APPROACHING AN INTERSECTION ON A CITY STREET WENT TO PRESS ON THE BRAKES ALL THE LIGHTS STARTED FLASHING, BRAKE SYSTEM FLASHED, NO TRACTION LIGHT CAME ON, VEHICL

20230125Component: AIR BAGSCrash reported2 injured

I was traveling 48 miles per hour when another vehicle pulled in front of me. I was able to apply the brakes and collision was at 18 miles per hour. The police estimate other vehicle traveling 16 mile

20221018Component: AIR BAGSCrash reported2 injured

The contact owned a 2018 Ram 1500. The contact stated that while driving at approximately 55 MPH, the vehicle crashed head-on with a Ford Focus. There were no warning lights illuminated. The driver su

Showing the 5 most serious of 881 complaints filed with NHTSA.

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