2021 Cadillac XT4 Service and Repair Manual

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Factory-Grade Data

2021 Cadillac XT4 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

  • Premium Luxury Sport Utility 4-Door
  • Sport Sport Utility 4-Door
  • Luxury Sport Utility 4-Door

Engines covered

  • 2.0L 1998CC 122Cu. In. l4 GAS 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

2021 Cadillac XT4 Recalls & Complaints

NHTSA #21V64900020/08/2021Component: SEAT BELTS:CRITICAL FASTENERS

General Motors, LLC (GM) is recalling certain 2016-2021 Chevrolet Malibu and 2019-2021 Cadillac XT4 vehicles. The rear seat belt retractors may be improperly secured with loose or missing fasteners.

Consequence

An improperly secured seat belt retractor may not function properly in a crash, increasing the risk

Remedy

Dealers will inspect and tighten the rear seat belt retractors, as necessary, free of charge. Owner

TSB #11032764

Pi created to provide GM dealers with information on gathering information for projection issue

TSB #11032763

This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues

TSB #11030974

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

TSB #11030532

Improvements to OnStar functionality.

TSB #11030360

This preliminary information discusses a condition that may arise from the drivers window switch sending an errant message causing the vehicle to enter manual fob learn mode.

TSB #11030092

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

TSB #11030091

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11029950

This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss

Showing the 8 most recent of 680 technical service bulletins on file with NHTSA.

20210527Component: ELECTRICAL SYSTEMCrash reported

The contact owns a 2021 Cadillac XT4. The contact stated that while driving in stop-and-go traffic, the contact rear-ended a vehicle in front. The contact crashed the vehicle at approximately 5 mph;

20210527Component: FORWARD COLLISION AVOIDANCECrash reported

The contact owns a 2021 Cadillac XT4. The contact stated that while driving in stop-and-go traffic, the contact rear-ended a vehicle in front. The contact crashed the vehicle at approximately 5 mph;

20260510Component: FUEL/PROPULSION SYSTEM

there is a recall on the 2021 cadillac xt4, fuel pump control module, N252516900, but my vin is not included. My vehicle seems to be having the same issue. The dealer has been unable to diagnose as

20260119Component: FUEL/PROPULSION SYSTEM

UNKNOWN

20250902Component: FUEL/PROPULSION SYSTEM

Vehicle stalled on the road,coming to a total stop,very dangerous because of the trafic.Vehicle cranks but not start.Fuel pump power control module failed,code p203f.Take to Vera Cadillac dealer for r

Showing the 5 most serious of 15 complaints filed with NHTSA.

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