2023 Cadillac CT5 Service and Repair Manual

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Covers all 2023 CT5 trims — V Sedan 4-Door, V Blackwing Sedan 4-Door, Sport Sedan 4-Door +2 more ·
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2023 Cadillac CT5 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 Sedan 4-Door
  • V Blackwing Sedan 4-Door
  • Sport Sedan 4-Door
  • Luxury Sedan 4-Door
  • Premium Luxury Sedan 4-Door

Engines covered

  • 3.0L 182Cu. In. V6 GAS DOHC Turbocharged
  • 6.2L 6162CC 376Cu. In. V8 GAS DOHC Supercharged
  • 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
NHTSA #22V90300008/12/2022Component: EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE

General Motors, LLC (GM) is recalling certain 2020-2023 Cadillac CT4 and CT5; 2021-2023 Buick Envision; and 2022-2023 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, Tahoe, GMC

Consequence

DRLs that do not deactivate as intended may result in a glare, reducing visibility, and increasing t

Remedy

The body control module software will be updated by a dealer, or through an over-the-air (OTA) updat

TSB #11033150

This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications. Engineering is investigating and this PI will be converted to a bulletin when a repair is avail

TSB #11032784

This Preliminary information communicates to dealers a procedure to reset the radio.

TSB #11032770

This PI states that if SDGM DTC U3000 Sym 49 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.

TSB #11032767

This Preliminary information communicates to dealers a procedure to reset the radio.

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 #11032560

This Preliminary information communicates to dealers a procedure to reset the radio.

TSB #11032559

This Preliminary information communicates to dealers a procedure to reset the radio.

Showing the 8 most recent of 508 technical service bulletins on file with NHTSA.

20260414Component: TIRESCrash reported1 injured

Incident Overview: A Continental Control Contact Sport SRS+ tire (DOT 5323) experienced a catastrophic internal structural failure during normal driving on a wet roadway. The tire had approximately 50

20250724Component: AIR BAGSCrash reported1 injured

The lane departure didn’t work as expected to avoid a crash. I was hurt and bruised due to the air bags never deployed after hit on right wheel number flew off causing my to go into 5 guard rails .

20250724Component: LANE DEPARTURE: WARNINGCrash reported1 injured

The lane departure didn’t work as expected to avoid a crash. I was hurt and bruised due to the air bags never deployed after hit on right wheel number flew off causing my to go into 5 guard rails .

20250724Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKINGCrash reported1 injured

The lane departure didn’t work as expected to avoid a crash. I was hurt and bruised due to the air bags never deployed after hit on right wheel number flew off causing my to go into 5 guard rails .

20250205Component: STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUIDCrash reported

The contact owned a 2023 Cadillac CT5. The contact stated that while exiting the highway on the far right lane on a 2-lane exit at 45 MPH, a message appeared on the instrument panel that read "Steerin

Showing the 5 most serious of 14 complaints filed with NHTSA.

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