2020 Alfa Romeo Giulia Service and Repair Manual

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Factory-Grade Data

2020 Alfa Romeo Giulia 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

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

Trims covered

  • Quadrifoglio Sedan 4-Door
  • Base Sedan 4-Door
  • Sport Sedan 4-Door
  • TI Sedan 4-Door

Engines covered

  • 2.9L 2891CC V6 GAS DOHC Turbocharged
  • 2.0L 1997CC 122Cu. In. l4 GAS SOHC 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

2020 Alfa Romeo Giulia Recalls & Complaints

NHTSA #23V38200030/05/2023Component: SERVICE BRAKES, HYDRAULIC

Chrysler (FCA US, LLC) is recalling certain 2017-2020 Alfa Romeo Giulia and 2018-2020 Alfa Romeo Stelvio vehicles equipped with carbon ceramic matrix brakes. During certain driving maneuvers, the bra

Consequence

An unexpected decrease in brake performance increases the risk of a crash.

Remedy

Dealers will update the brake system module (BSM) software, free of charge. Owner notification lett

NHTSA #21V87800012/11/2021Component: FUEL SYSTEM, GASOLINE:DELIVERY:PRESSURE SENSOR

Chrysler (FCA US, LLC) is recalling certain 2020-2021 Alfa Romeo Stelvio, and Alfa Romeo Giulia vehicles. The fuel line sensor housing may crack and leak fuel.

Consequence

A fuel leak may cause an engine stall, increasing the risk of a crash. A fuel leak also increases t

Remedy

Dealers will inspect and replace the fuel line sensor housing, as necessary, free of charge. Owner

NHTSA #25V66700007/10/2025Component: BACK OVER PREVENTION:DISPLAY FUNCTION

Chrysler (FCA US, LLC) is recalling certain 2020-2025 Alfa Romeo Giulia and Alfa Romeo Stelvio vehicles. The printed circuit board and software for the rearview camera may contain defects that cause t

Consequence

A rearview image that does not display properly reduces the driver's view behind the vehicle, increa

Remedy

Dealers will inspect and replace the radio, as necessary. In addition, dealers will update the rearv

NHTSA #21V30900004/05/2021Component: SERVICE BRAKES, HYDRAULIC

Chrysler (FCA US, LLC) is recalling certain 2019-2021 Alfa Romeo Stelvio and 2020-2021 Alfa Romeo Giulia vehicles. Hard braking may cause the Anti-Lock Brake System (ABS) Hydraulic Control Unit (HCU)

Consequence

The loss of braking assistance and ABS functionality can reduce overall braking performance, increas

Remedy

Dealers will replace the ABS HCU, free of charge. Owner notification letters were mailed on June 29

NHTSA #21V84800002/11/2021Component: TIRES

Chrysler (FCA US, LLC) is recalling certain 2020 Alfa Romeo Giulia vehicles. These vehicles may be equipped with tires that have a lesser load rating than intended for the vehicle. As such, these ve

Consequence

The incorrect tires can result in the operator overloading the vehicle, increasing the risk of a cra

Remedy

Dealers will replace the tires, and update the owner's manual with the correct load rating, free of

TSB #11032849

Oil Change Monitor Displaying Prematurely Customers may experience the following: The oil change light illuminated on the dash shortly after taking delivery of the vehicle within 6,437 Km (4,000 miles) This bulletin involves resetting the o

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 #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 #11027645

Customer Satisfaction Notification 64C Powertrain Control Module Wiring Harness- Dealer Notification

TSB #11026677

Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): B1E21-9

TSB #11026660

If the DTC B1E21-96: Backup Battery-Component Internal Failure is active and customer states Popup message will show at the radio: "Battery of Uconnect Box requires service. SOS call and related functions may be unavailable. Please visit an

TSB #11026549

Telematics Box Module (TBM) Backup Battery Replacement When DTC B1E21 Is Present echnicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): B1E21-96

Showing the 8 most recent of 161 technical service bulletins on file with NHTSA.

20260407Component: FUEL/PROPULSION SYSTEM

Just bought a 2020 Alfa Romeo Giulia from Carvana and two days later while driving the check engine light came on along with the electronic throttle light and the auto start/stop light. While driving

20260407Component: ENGINE

Just bought a 2020 Alfa Romeo Giulia from Carvana and two days later while driving the check engine light came on along with the electronic throttle light and the auto start/stop light. While driving

20260407Component: VEHICLE SPEED CONTROL

Just bought a 2020 Alfa Romeo Giulia from Carvana and two days later while driving the check engine light came on along with the electronic throttle light and the auto start/stop light. While driving

20260327Component: WHEELS

A persistent humming/whining noise occurs at highway speeds (around 60–70 mph). The noise has been present for more than two years and has continued through multiple major repairs. The sound appears

20260327Component: UNKNOWN OR OTHER

A persistent humming/whining noise occurs at highway speeds (around 60–70 mph). The noise has been present for more than two years and has continued through multiple major repairs. The sound appears

Showing the 5 most serious of 27 complaints filed with NHTSA.

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