2021 Cadillac XT4 Technical Service Bulletins

685 technical service bulletins (TSBs) are on record for the 2021 Cadillac XT4. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10194105Apr 16, 2021Brakes. This service bulletin provides repair information to correct a customer concern of Unintended Parking Brake Engagement.
• 10194101Apr 16, 2021Equipment. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2017-2022 and newer model year vehicles with RPO ATH and AVJ (U.S. Only).
• 10194081Apr 13, 2021Equipment. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10195128Apr 9, 2021Suspension. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
• 10194082Apr 7, 2021Equipment. This warranty administration bulletin provides policy information, proper labor operation selection and causal part identification for warranty transactions (U.S. Only).
• 10195149Apr 6, 2021Equipment. This service bulletin provides information on Enhancing Field Product Reports with Digital Pictures.
• 10195127Apr 6, 2021Equipment. This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
• 10190443Mar 31, 2021Back-over prevention (rear camera), Equipment. This Preliminary information communicates a condition where the radio may display a :connection not availale, please call OnStar agent". This bulletin advises that Engineering is working on a software solution that will prevent the message from displaying when listening to non-SXM sources, but still allow the message to display when a loss of connectivity exists and the user is attempting to play Sirius XM.
• 10190441Mar 31, 2021Equipment. This Preliminary information communicates Information found from PIE0611A that leads to a programming concern with the SDM setting a B0017-08
• 10191226Mar 30, 2021Equipment. This service bulletin provides repair information for Radio Software Version V155 Update.
• 10191191Mar 30, 2021Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10191235Mar 29, 2021Electrical system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Head Up Display (HUD) being blank.
• 10191192Mar 29, 2021Equipment. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 10190430Mar 26, 2021Transmission and drivetrain, Engine cooling. This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer or cam drive system component related service procedures.
• 10191241Mar 25, 2021Air bags. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Airbag Warning Lamp illuminated on the Driver Information Center (DIC).
• 10190425Mar 24, 2021Equipment. This Preliminary information communicates Information found from PIE0611A that leads to a programming concern with the SDM setting a B0017-08
• 10192031Mar 22, 2021Electrical system. This service bulletin provides information for dealers on Using EL-52545 When Diagnosing PEPs Transmitter Key Fobs (North America ONLY).
• 10192034Mar 17, 2021Electrical system. This warranty administration bulletin provides policy information requirements applicable to key fob replacement under the New Vehicle Limited Warranty or under a Replacement Parts Warranty on 2021 and newer model year vehicles with RPO ATH (U.S. Only).
• 10191233Mar 17, 2021Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10190407Mar 16, 2021Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10191232Mar 11, 2021Equipment. This informational bulletin provides information on proper use of floor mats.
• 10191207Mar 11, 2021Transmission and drivetrain, Engine cooling. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 10191217Mar 9, 2021Equipment. This informational bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before sold (prepping) to the customer.
• 10191206Mar 9, 2021Electrical system. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10190396Mar 9, 2021Engine cooling. This Preliminary information communicates to the technician a service Diagnostic / Repair tip to avoid causing the crankshaft sprocket to disengage from the crankshaft during crankshaft balancer removal.
• 10191163Mar 8, 2021Steering. This service bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
• 10189216Feb 25, 2021Transmission and drivetrain. Customer Satisfaction Program - Certain vehicles, equipped with a 9-speed automatic transmission, may contain transmissions that could shift harshly. Dealers are to replace the transmission.
• 10189168Feb 9, 2021Exterior lighting, Air bags, Transmission and drivetrain. Service Update. On certain vehicles equipped with automatic transmissions, the clutch spring retaining ring may not be fully seated. Vehicles with this condition may set DTC Code P0747 and the MIL light (malfunction indicator light) will illuminate. This typically occurs at low mileage. Dealers will inspect the transmission by following the procedure and if it fails, the transmission will be replaced.
• 10188403Jan 29, 2021Suspension, Transmission and drivetrain. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
• 10188401Jan 29, 2021Body and structure, Equipment. This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.
• 10187745Jan 22, 2021Engine. This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and prevent unnecessary engine replacement.
• 10187229Jan 13, 2021Transmission and drivetrain. Customer Satisfaction Program - certain vehicles equipped with a 9-speed automatic transmission may contain transmissions that could shift harshly. These transmissions must be replaced before sale and delivery to a customer. Parts are currently not available, but when parts are available, dealers will replace the transmission.
• 10187226Jan 12, 2021Air bags, Exterior lighting. Service Update. On certain vehicles equipped with automatic transmissions, the clutch spring retaining ring may not be fully seated. Vehicles with this condition may set DTC Code P0747 and the MIL light (malfunction indicator light) will illuminate. This typically occurs at low mileage. Dealers are to perform the inspection procedure contained within this bulletin.
• 10187429Dec 23, 2020Equipment, Electrical system. This service bulletin provides V152 radio software update information to correct customer concerns of various software issues.
• 10187379Dec 23, 2020Equipment. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 10187202Dec 23, 2020Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10186102Dec 23, 2020Electrical system, Equipment. This service bulletin provides V152 radio software update information to correct customer concerns of various software issues.
• 10186065Dec 23, 2020Equipment. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
• 10185751Dec 23, 2020Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10187201Dec 22, 2020Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10185750Dec 22, 2020Back-over prevention (rear camera). This Preliminary information communicates A list of software concerns and advises that engineering is working on a resolution. This PI will be changed to a bulletin once the Software is released.
• 10187621Dec 21, 2020Equipment, Engine cooling. Service Update. A small number of vehicles may have a coolant inlet pipe that may present an obstructed threaded hole for the coolant temp sensor which could result in the check engine light coming on or a potential coolant leak. Dealers are to replace the coolant inlet pipe and temperature sensor.
• 10187348Dec 21, 2020Engine cooling. Service Update. A small number of vehicles may have a coolant inlet pipe that may present an obstructed threaded hole for the coolant temp sensor which could result in the check engine light coming on or a potential coolant leak. Dealers are to replace the coolant inlet pipe and temperature sensor.
• 10187216Dec 21, 2020Back-over prevention (rear camera), Engine cooling, Air bags. Service Update. A small number of vehicles may have a coolant inlet pipe that may present an obstructed threaded hole for the coolant temp sensor which could result in the check engine light coming on or a potential coolant leak. Dealers are to replace the coolant inlet pipe and temperature sensor.
• 10186054Dec 21, 2020Equipment, Engine cooling. Service Update. A small number of vehicles may have a coolant inlet pipe that may present an obstructed threaded hole for the coolant temp sensor which could result in the check engine light coming on or a potential coolant leak. Dealers are to replace the coolant inlet pipe and temperature sensor.
• 10187428Dec 17, 2020Equipment. This service bulletin provides information to aid a dealer/customer concern of Radio Unwanted Phantom Touch or Non-Responsive to Touch After Cleaning/Disinfecting Radio Display.
• 10187193Dec 17, 2020Fuel system. This Preliminary information communicates to the technicians to replace the CAC outlet hose if damaged.
• 10186101Dec 17, 2020Equipment. This service bulletin provides information to aid a dealer/customer concern of Radio Unwanted Phantom Touch or Non-Responsive to Touch After Cleaning/Disinfecting Radio Display.
• 10185742Dec 17, 2020Fuel system. This Preliminary information communicates to the technicians to replace the CAC outlet hose if damaged.
• 10187625Dec 16, 2020Equipment, Engine cooling. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.

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