2020 Cadillac XT6 Service and Repair Manual

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Factory-Grade Data

2020 Cadillac XT6 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

Engines covered

  • 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

2020 Cadillac XT6 Recalls & Complaints

NHTSA #20V44600030/07/2020Component: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR

General Motors, LLC. (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5 and XT6, Chevrolet Blazer, Silverado 1500, 2500 and 3500 and Traverse and GMC Acadia and Sierra 1500, 2500 and 3500 vehi

Consequence

If the diffuser separates from the inflator during deployment, RRAB performance may be degraded, inc

Remedy

GM will notify owners, and dealers will replace the suspect RRAB modules, free of charge. The recal

NHTSA #20V66800029/10/2020Component: POWER TRAIN:AUTOMATIC TRANSMISSION

General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Cruze and Buick LaCrosse, 2018-2020 Chevrolet Equinox, Chevrolet Traverse and GMC Terrain, 2018 Chevrolet Malibu, 2019-2020 Buick Encor

Consequence

Missing bolts on the start-stop accumulator endcap could result in a transmission oil leak and may p

Remedy

GM will notify owners, and dealers will inspect the start-stop transmission accumulator and replace

NHTSA #22V70900022/09/2022Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

General Motors, LLC (GM) is recalling certain 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional Surround Vision feature. The rearview camera coaxial cable connectors may

Consequence

An inoperative rearview camera can reduce the driver's rear visibility, increasing the risk of a cra

Remedy

Dealers will replace the coaxial cables, free of charge. Owner notification letters were mailed Jan

NHTSA #20V63900015/10/2020Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, Cadillac XT6, Chevrolet Traverse, and GMC Acadia vehicles. The fuel pump's jet nozzle may have a plastic burr remaining

Consequence

Insufficient fuel supply can result in an engine stall without warning, increasing the risk of a cra

Remedy

GM will notify owners, and dealers will replace the fuel pump module. The recall began November 16,

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 #11028658

This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.

TSB #11027701

This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.

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 #11027617

This Preliminary information communicates the potential for condensation to freeze up inside the Crankcase Pressure Sensor causing dtc P04FB to set.

Showing the 8 most recent of 855 technical service bulletins on file with NHTSA.

20260424Component: POWER TRAIN

at 60,740 miles, "Steering Assist is Reduced Drive with Care" message appeared. Under warranty, but dealership booked for 2 months. Error went away. After powertrain warranty expires (70,000 miles)

20260212Component: POWER TRAIN

Transmission jerking and has become unsafe to drive. Will have to go back to the dealership for this issue. This will be the third time 4 same issue.

20251210Component: UNKNOWN OR OTHER

Vehicle has a known condition with many same year make and model that could cause the engine coolant thermostat to open at a lower temperature than intended. This condition has occurred. As a result t

20251210Component: ENGINE

Vehicle has a known condition with many same year make and model that could cause the engine coolant thermostat to open at a lower temperature than intended. This condition has occurred. As a result t

20251014Component: TIRES

While driving approximately 15 MPH I noticed a scraping sound and shimmy in the back. I took the car to Capital Cadillac for diagnostic. They found that the tires were separated. I bought the car bran

Showing the 5 most serious of 50 complaints filed with NHTSA.

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