2021 Jeep Grand Cherokee L Service and Repair Manual

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Factory-Grade Data

2021 Jeep Grand Cherokee L 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 diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • Limited Sport Utility 4-Door
  • Summit Reserve Sport Utility 4-Door
  • Overland Sport Utility 4-Door
  • Summit Sport Utility 4-Door
  • Altitude Sport Utility 4-Door
  • Laredo Sport Utility 4-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

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Vehicle Safety Data

2021 Jeep Grand Cherokee L Recalls & Complaints

NHTSA #26V05100029/01/2026Component: SUSPENSION:REAR:SPRINGS:COIL SPRINGS

Chrysler (FCA US, LLC) is recalling certain 2021-2023 Jeep Grand Cherokee L and 2022-2023 Jeep Grand Cherokee vehicles. The rear coil springs may be incorrectly installed and detach from the vehicle w

Consequence

Rear coil springs that detach from the vehicle while driving increase the risk of a crash.

Remedy

Dealers will inspect and repair the rear coil spring assembly, as necessary, free of charge. Interim

NHTSA #24V89700027/11/2024Component: AIR BAGS:SIDE/WINDOW

Chrysler (FCA US, LLC) is recalling certain 2022-2024 Jeep Grand Cherokee and 2021-2024 Jeep Grand Cherokee L vehicles. An improperly secured connector for the front seat side air bags (SAB) may prev

Consequence

An air bag that does not deploy during a crash increases the risk of injury.

Remedy

Dealers secured the connector, free of charge. All affected vehicles have been remedied. Owner not

NHTSA #25V08300013/02/2025Component: EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO (TOUCH)SCREEN/MONITOR/UNIT

Chrysler (FCA US, LLC) is recalling certain 2022 Jeep Grand Cherokee and 2021-2022 Jeep Grand Cherokee L vehicles. The center stack upper display (DCSD) contains a transistor that may overheat and pr

Consequence

A rearview image that does not display reduces the driver's visibility, increasing the risk of a cra

Remedy

Dealers replaced the DCSD, free of charge. All affected vehicles have been repaired. Owner notific

TSB #11032857

Before replacing the steering column control module (SCCM) due to wipers inop, wipers not turning off, wipers not returning to position, heated steering wheel not working and/or steering controls inop, Electronic Stability Control (ESC) lig

TSB #11032854

Clunking when going over bumps, potholes, or turns. During diagnosis dealers may find rubber separating from the bushing on the tension link. This is normal and most likely is not attributed to the noise. Please follow normal diagnosis 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 #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 #11032814

SWITCH - LIFTGATE

TSB #11032810

Poor Audio Quality And Or Static From Wireless Devices

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 #11032637

SWITCH - LIFTGATE

Showing the 8 most recent of 172 technical service bulletins on file with NHTSA.

20250811Component: AIR BAGSCrash reported1 injured

The airbags did not deploy

20250912Component: SEATSCrash reported

Drivers seat self inflate causing the seat belt to tighten mid drive . Causes severe back pain.

20250131Component: UNKNOWN OR OTHERFire reported

Jeep caught on fire in my garage in the middle of the night when it was off, burnt my entire house down, 4 fire investigaters and a forensic scientist, swaid the fire started in the battery compartme

20260521Component: ELECTRICAL SYSTEM

THE PASSENGER DOOR DOES NOT ALERT WHEN OPENING OR CLOSE . THE TBM MODULE DOES NOT UPDATE CAUSING A FEE OF $198.95

20260521Component: UNKNOWN OR OTHER

THE PASSENGER DOOR DOES NOT ALERT WHEN OPENING OR CLOSE . THE TBM MODULE DOES NOT UPDATE CAUSING A FEE OF $198.95

Showing the 5 most serious of 112 complaints filed with NHTSA.

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