2021 Jeep Gladiator Service and Repair Manual
The 2021 Jeep Gladiator was offered with two engines — the 3.0L V6 turbo and the 3.6L V6 — across ten Crew Cab trims. This factory service and repair manual is matched to the 2021 model year, so the specifications and repair steps correspond to your engine and trim.
Engines
- 3.0L V6 turbo — 182 cu in, DOHC
- 3.6L V6 — 220 cu in, DOHC
Trims
- 80th Anniversary Crew Cab Pickup
- High Altitude Crew Cab Pickup
- Mojave Crew Cab Pickup
- Overland Crew Cab Pickup
- Rubicon Crew Cab Pickup
- Sport Crew Cab Pickup
- Sport S Crew Cab Pickup
- Texas Trail Crew Cab Pickup
- Willys Crew Cab Pickup
- Willys Sport Crew Cab Pickup
Known issues on the 2021 Gladiator. Five recalls are on federal record for this model year: two power-train recalls for overheated clutch components that can increase the risk of a fire, a rearview camera that does not display an image and reduces the driver's rear view (crash risk), a gasoline fuel-pump fault that can cause an engine stall, and a diesel fuel-pump failure that can also stall the engine — both raising crash risk. Owners have filed 424 complaints and 682 technical service bulletins are on record for the year.
From a routine service interval to a hard-to-trace wiring fault, it keeps you on the factory procedure and the correct specification for your specific 2021 Gladiator.
Chrysler (FCA US, LLC) is recalling certain 2018-2021 Jeep Wrangler and 2020-2021 Jeep Gladiator vehicles equipped with manual transmissions. The clutch pressure plate may overheat and fracture.
Overheated clutch components may increase the risk of a fire. Additionally, damage to other nearby components can result in debris falling onto the road or a loss of drive, increasing the risk of a crash.
FCA US LLC will notify owners, and dealers will add software to reduce engine torque capability when clutch assembly temperatures rise to a level that may damage the inner pressure plate, free of charge." FCA has ordered a stop sale for the affected vehicles as of February 25, 2021. Owner notification letters were mailed on March 4, 2021.
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 vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
A rearview camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
Dealers will update the radio software, free of charge. Owner notification letters were mailed October 6, 2022. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA, LLC's number for this recall is Z86.
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, causing an engine stall.
An engine stall can increase the risk of a crash.
Dealers will replace the HPFP and inspect and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact Chrysler customer service at 1-800-853-1403. Chrysler's number for this recall is Z96.
Chrysler (FCA US, LLC) is recalling certain 2018-2023 Jeep Wrangler, and 2020-2023 Jeep Gladiator vehicles equipped with manual transmissions. The clutch pressure plate may overheat and fracture.
Overheated clutch components may increase the risk of a fire. Additionally, damage to other nearby components can result in debris falling onto the road or a loss of drive, increasing the risk of a crash.
Dealers will replace the clutch assembly and update the software, free of charge. Owner notification letters were mailed from November 16, 2023 through July 25, 2024. Owners may contact (FCA US, LLC) customer service at 1-800-853-1403. FCA US LLC's number for this recall is 19A. This recall expands and replaces previous recall 21V-028. Vehicles previously repaired under recall 21V-028 will need to have the new remedy completed.
Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Wrangler, Gladiator, and 2022-2023 Ram 1500 vehicles equipped with a 3.0L diesel engine. The high pressure fuel pump (HPFP) may fail.
Fuel pump failure can result in an engine stall, increasing the risk of a crash.
Dealers will replace the HPFP and replace additional fuel system components, as necessary, free of charge. Owner notification letters were mailed October 17, 2023. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US, LLC's number for this recall is 01A.
Chrysler (FCA US, LLC) is recalling certain 2021 Jeep Wrangler and Jeep Gladiator vehicles that were previously remedied under NHTSA recall number 23V-116. The software for the powertrain control module may cause an engine stall, which can result in a loss of drive power.
A loss of drive power increases the risk of a crash.
Dealers will update the powertrain control module software, free of charge. Owner notification letters were mailed August 15, 2024. Owners may contact FCA US, LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is 92B. Vehicles previously repaired under recall 23V-116 will need to have the new remedy completed.
Chrysler (FCA US, LLC) is recalling certain 2020-2024 Jeep Gladiator and 2018-2024 Jeep Wrangler vehicles. The instrument panel cluster may experience an internal short circuit and fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 101, "Controls and Displays."
An instrument panel that fails to display critical safety information, such as the speedometer or warning lights, can increase the risk of a crash.
Dealers will replace the instrument panel cluster, free of charge. Owner notification letters were mailed between October 3, 2024, and January 23, 2025. Owners may contact FCA customer service at 1-800-853-1403. FCA's number for this recall is 30B.
Chrysler (FCA US, LLC) is recalling certain 2021-2025 Jeep Wrangler, Wrangler 4XE, and Jeep Gladiator vehicles. The electric hydraulic power steering pump wiring may overheat and cause a vehicle fire, even when the vehicle is parked with the ignition in the "Off" position.
A vehicle fire increases the risk of injury.
Owners are advised to park outside and away from structures, until their vehicle is repaired. Dealers will inspect and replace the wiring and electric hydraulic power steering pump, as necessary, free of charge. Owner notification letters are expected to be mailed July 9, 2026. Owners may contact FCA US LLC customer service at 1-800-853-1403. FCA US LLC's number for this recall is 21D. The Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on June 1
D-25-15 Rev. C Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
ID-25-11 Rev. C Aluminum Filiform Corrosion Warranty Policy and Vehicle Digital Imaging (VDI) Pre-Approval Process - ALL Vehicles
EMISSION RECALL NORTH AMERICA Check Engine/Malfunction Indicator Lamp 16C The instrument panel cluster on about 32,587 of the above vehicles may have an inoperable check engine/malfunction indicator lamp (CEL/MIL). (JT) vehicles: CEL/MIL an
CORE HEATER
CORE HEATER
MOTOR - BLOWER WITH WHEEL
MOTOR - BLOWER WITH WHEEL
Check Engine Light (CEL) Illuminated with Diagnostic Trouble Code (DTC) P0106 Manifold Absolute Pressure Sensor Performance Setting In The Powertrain Control Module (PCM)
Showing the 8 most recent of 696 technical service bulletins on file with NHTSA.
On February 25, 2023, while slowing down as I approached an intersection controlled by a red signal light and applied my brakes which was slowing me down. My foot never moved off the brake pedal as I slowed down. Suddenly, the Jeep Gladiator "accelerated/surged" forward and stated gaining speed. Although I was applying constant pressure on the brake pedal, the vehicle never slowed down or stopped because after traveling 200-300 feet and striking two signal light poles and a communications box,
1) Frequent spontaneous windshield cracks. 2) violent, out of control steering wheel vibrations at highway speeds nearly causing severe collisions. Reoccurring incidents. I’m ready to file a lawsuit.
Under heavy breaking the rear wheels of my vehicle lifted off of the pavement. This loss of traction and shift in weight resulted in a head on collision with a vehicle in the opposite lane of traffic. After the accident I discover that the suspension for my vehicle was incorrect to the level that FCA released a TSB regarding the issue. The suspension that was equipped with the vehicle was designed for the gasoline motor and the weight associated with that motor. My vehicle has the diesel motor
The contact owned a 2021 Jeep Gladiator. The contact stated that while the vehicle was stopped at a corner, another vehicle was speeding and crashed into the front driver's side quarter panel. The impact pushed the vehicle forward, causing the front driver's wheel to swipe a telephone pole before landing on a residential lawn. The other vehicle then crashed into a telephone pole. The front driver's side air bag deployed, but there was a hole in the side air bag and the driver's air bag failed to
While slowing to a stop and fully depressing only the brake with my right foot my vehicle rapidly accelerated into the back of another truck. It felt like the front brakes engaged, but the rear wheels continued to accelerate as the vehicle transmission worked to downshift. Serious safety issue-I am 100% confident that I was standing on the brake and not the accelerator. The road was dry with no gravel and I was gradually slowing to a stop when this occurred.
BRAKE PEDEL TO CLOSE TO GAS PEDEL.. WHEN THE DRIVER PUSHES ON BRAKE PEDEL HE CAN PUSH ON THE GAS PEDEL.. THE TRUCK WENT FORWARD VERY FAST./. I BROUGHT THE TRUCK USED
I was exiting the freeway with a speed limit of 75 mph. On the off-ramp I lost control of the Gladiator. The front end wobble was so bad that I could not hold onto the steering wheel for fear of breaking my wrist. Instead I had to wrap my arms about the wheel in an attempt to stop the wobble. I was unable to keep the vehicle in my lane, and finally ended up in a large ditch next to the off ramp. What happened appears to be a problem with the Mopar 1.5" lift kit installed by the dealer. The
The contact owns a 2021 Jeep Gladiator. The contact stated that while driving at 60 MPH, there was an alarming amount of white smoke emanating from the engine compartment and permeating the interior of the vehicle, prompting the contact to pull over to the shoulder of the roadway and evacuate the vehicle. Moments later, the entire front of the vehicle was completely engulfed in flames. Local Emergency Services arrived on the scene and were able to extinguish the fire. During the failure several
I purchased this vehicle on May 25th. On june 4th it was parked out side my front porch and my house along with the jeep burned completely down. the fire was first witnessed on the front porch right where the jeep was parked. I was out of town working and had a friend there dog sitting for me. She and the dogs got out safely althoug she was sent to the hospital for smoke inhalation and was released later that evening. The arson investigation is still on going. as of monday June 8th, Both t
My name is [XXX] , and I am writing to formally submit a complaint regarding the loss of my vehicle due to engine fire. The vehicle was a 2021 Jeep Gladiator Rubicon, VIN [XXX] , with approximately 26,666 miles at the time of loss. I purchased the vehicle on May 13, 2021. The fire occurred on July 10, 2025. I was driving on the freeway, and my vehicle lost power and dashboard warning lights illuminated. When I pulled over, the engine was on fire. The fire department came and doused the flames
Vehicle is 2 years old, with only 21,000 miles. Driving on the freeway, above 65mph, the vehicle wobbles violently if you hit a pot hole or a small bump. It jerks the steering wheel very hard from side to side, making it very difficult to stay within your lane. The only way to make the extreme wobble go away is to slow down significantly (<40mph) or sometimes come to a complete stop. A simple internet search and you will find MANY complaints about this with Jeeps, and it is commonly referred
My 2021 Jeep Gladiator Sport is very unsafe to drive specially at Highway speeds or speeds above 45 mph and multiple dealerships service departments are refusing to fix or even acknowledge the issue after not being able to fix the problem already due to no major recalls being offered by Jeep only a bulletin. Steering is very loose, and I cant drive my Jeep Gladiator Sport straight specially on a windy day. I have to constantly adjust my Jeep Gladiator Sport from side to side to keep it in my l
The contact owns a 2021 Jeep Gladiator. The contact stated that while driving at an undisclosed speed, the steering wheel started to shake abnormally. There was no warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the front outer drag-link socket needed to be replaced; however, the failure recurred. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact to take the vehicle back to the dealer for assistance. The
There is a failure of the vehicle’s Brake Throttle Override (BTO) system which poses a serious safety hazard. When braking the throttle will surge from ~500 to ~1,500 RPMs without driver input (foot completely off the accelerator pedal, clutch pedal pressed in, and applying brake pedal). Despite the driver’s foot firmly engaging the brake pedal, the vehicle sends rogue commands to the throttle to surge in the direction opposition to the driver’s inputs and intentions. The BTO malfunction creates
During show fall the snow gathers in the head lamp dishes causing them to fill and block out the light. This causes me to pull over and clear the head lamps so I can see about every mile or two. This is a known problem due to not having heat to melt the snow from the head light. Jeep knows this since there are companies out there selling heated head lamps. I was almost hit last week during the big snow fall we had in Western Washing ton Dec 2022. also in the mountains in CA. Where I lived. in 20
Showing the 15 most serious of 289 complaints filed with NHTSA.
