2019 Cadillac ATS Service and Repair Manual

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Factory-Grade Data

2019 Cadillac ATS 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

  • V Coupe 2-Door
  • Luxury Coupe 2-Door
  • Premium Luxury Coupe 2-Door
  • Base Coupe 2-Door
  • Coupe Coupe 2-Door
  • Premium Performance Coupe 2-Door

Engines covered

  • 3.6L 3564CC 217Cu. In. V6 GAS DOHC Turbocharged
  • 2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged
  • 3.6L 222Cu. In. V6 GAS DOHC 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

2019 Cadillac ATS Recalls & Complaints

No active recalls The 2019 Cadillac ATS has no recalls on file with NHTSA.
TSB #11030974

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

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

TSB #11027697

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

TSB #11027689

This PI communicates the proper part numbers for transmission connectors and internal harness to prevent confusion when ordering

TSB #11027601

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

TSB #11026104

This service bulletin provides information on Tire Sidewall Irregularities.

Showing the 8 most recent of 775 technical service bulletins on file with NHTSA.

20250926Component: STEERING

Vehicle has an issue where it intermittently throws errors, loses power, accelerates on its own, and is difficult to steer. I purchased it with 12,800 miles in it and it has been having this issue si

20250926Component: ELECTRICAL SYSTEM

Vehicle has an issue where it intermittently throws errors, loses power, accelerates on its own, and is difficult to steer. I purchased it with 12,800 miles in it and it has been having this issue si

20250926Component: SERVICE BRAKES

Vehicle has an issue where it intermittently throws errors, loses power, accelerates on its own, and is difficult to steer. I purchased it with 12,800 miles in it and it has been having this issue si

20200706Component: ENGINE

THE ENGINE STOPPED ITSELF WHEN I WAS AT A COMPLETE STOP AT A TRAFFIC SIGNAL. AFTER A FEW MINUTES I WAS ABLE TO START THE ENGINE AGAIN. IT DID THIS THREE TIMES IN THE SPACE OF AN HOUR. ALWAYS AT A CO

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