2026 Cadillac Optiq TSBs
142 Technical Service Bulletins across 15 categories
Categories
Electrical
35 bulletinsThis Preliminary Information provides a repair direction for an inoperative amplifier module due to water intrusion.
If a vehicle has an issue with super cruise inoperative tech is directed to follow a diagnostic path before replacing...
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the Image processing module.
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
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illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
Improvements to system responsiveness Improvements to camera image clarity Fixes to prevent blank screens and audio...
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drop-outs Improvements to vehicle software update installation Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. Cabin Glance, a new feature that displays a live feed of the seating area on your infotainment screen. This allows you to check on passengers, such as kids or pets.
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
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illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
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TAC.
This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this...
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concern, to perform the steps listed and should be able to reprogram the module and correct this.
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state.
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Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
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TAC.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
This PI explains that the T18, Battery charger drive power distribution control modules are on parts restriction thru...
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TAC.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
Certain vehicles may have a condition in which the Telematic Control Module may enter an unrecoverable state.
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Dealers are to reprogram the Telematic Control Module. IMPORTANT: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This Preliminary information communicates an issue with a replace or low FOB battery message
Certain vehicles, may have a condition in which the Telematic Control Module may enter an unrecoverable state.
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Dealers are to reprogram the Telematic Control Module. Important: The module may be several software versions behind and could take multiple programming events to bring it to the latest software level (The same calibration screen MUST be displayed to validate the module has been programmed to the latest level). Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This preliminary information is for technicians that will have this message after USB updating the radio.
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The repair should not involve replacing a module as pressing the reset button will correct this issue.
This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not...
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correct it.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC'ss
This Preliminary Information provides a repair direction for an inoperative amplifier module due to water intrusion.
This P/I is advising that the TCM should not be replaced for DTC P16F4 and to follow the repair instructions.
Improvements to help protect battery health in low temperatures.
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Improvements to diagnostics to reduce service messages. Fixes to help protect battery health in high temperatures. Fixes to improve responsiveness for vehicle diagnostics.
This P/I is advising that the TCM should not be replaced for DTC P16F4 and to request FSE assistance for a TCM data...
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pull.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
This Preliminary Information communicates that, under certain conditions, a MIL (Malfunction Indicator Lamp)...
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illumination or a "Service High Voltage" message may display on the IPC (Instrument Panel Cluster), and the 12V battery may experience discharge.
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no...
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DTC's
The Driver Information Center may display a message of Transport Mode On after the ignition is cycled.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
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information.
This information provides software update information for the K73 Telematics module to correct the symptoms described.
This Preliminary information communicates not to replace the Image processing Module if the following DTC's are history...
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- U3000 SYM49, U1624, U0140, U023B SYM00, U053C, B1DD SYM57.
This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission...
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information.
This Preliminary information communicates the active safety features and/or cameras are inoperative or unavailable after...
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a 12 volt battery replacement or battery charge after a low voltage condition.
This Preliminary Information communication provides information to the technician about vehicles that have an...
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intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, B3935, C0750, C0755, C0760, C0765, and/or C0775.
This preliminary information is for technicians that will have this message after USB updating the radio.
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The repair should not involve replacing a module as pressing the reset button will correct this issue.
This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use...
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for certain repairs, such as Wiring Harness Repairs.
Other
28 bulletinsThis preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the technicians a diagnostic tip if a technician loses communication with...
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the image processor #2 and how to restore communication
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This preliminary information informs customers and technicians of the short term work around to restore the proper Themes operation.
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No parts should be replaced at this time.
This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM.
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Advises of how to contact PQC to authorize SDGM replacement.
Pi created to provide GM dealers with information on gathering information for projection issue
This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical...
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Assistance Case in CX Connect.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the field about a normal condition about a message that appears when using...
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a NFC card to start the vehicle when a key fob or a digital key device is not present.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates to the technician the repair direction needed to correct an issue with...
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incorrect badging on the rear of the vehicle.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements.
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They should follow the notes mentioned prior to anything being replaced.
This Preliminary information communicates to the technician the direction needed for a complaint of a squeak noise...
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coming from the rear of the vehicle when driving over bumps.
New Vehicle Monitoring Programs Section in IVH
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary information communicates an issue with super cruise unavailable due to the driver's monitoring camera...
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and dealers to replace the camera.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini...
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50 terminal test probe, replacement terminals, and terminated leads.
Infotainment
24 bulletinsThis Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
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how to reset/clear the message.
Fixes to help prevent loss of functionality for connectivity features such as OnStar, Wi-Fi, Navigation, and Super...
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Cruise.
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This Preliminary information communicates to dealers a procedure to reset the radio.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary Information communicates the steps on diagnosing certain EV vehicles with a blank IPC screen, no charge or start concerns.
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Information includes steps to resolve for various symptoms are provided to the dealership technician.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed...
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limit sign displayed on instrument cluster.
This Preliminary information communicates to the technician the repair direction needed to address an inaccurate speed...
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limit sign displayed on instrument cluster.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This Preliminary information communicates to dealers a procedure to reset the radio.
This update will allow you to enable digital key with the myCadillac mobile app.
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Digital key is a new feature that lets you lock, unlock, and start your vehicle using your smartphone or smartwatch. This feature allows for convenient vehicle access without a key fob. For more information, refer to the Cadillac support site. Digital key requires a compatible device and active OnStar service plan. See onstar.com for details and limitations. Fixes for active cabin ventilation. Fixes to help ensure your vehicle can recognize the key when using digital key. Improvements to the performance of vehicle software updates. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back...
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to the vehicle.
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC...
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display
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and...
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how to reset/clear the message.
Engine
15 bulletinsThis Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
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Engineering is working on a new module.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
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Engineering is working on a new module.
Updates to enable Plug and Charge at select Supercharger stations through Energy Pass.
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See your vehicle's mobile app to use this feature. Updates to enable memory seat buttons to be linked to a user profile. Up to two user profiles can be linked to your vehicle's memory seat buttons. Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. Cabin Glance, a new feature that displays a live feed of the seating area on your infotainment screen. This allows you to check on passengers, such as kids or pets. Improvements to system responsiveness Improvements to camera image clarity Fixes to prevent blank screens and audio drop-outs Improvements to vehicle software update installation
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
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part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
This preliminary information is to inform technicians and customers that the voice command will be inoperative when trying to open applications.
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Engineering is investigating and this PI will be converted to a bulletin when a repair is available.
This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that...
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Engineering is working on a resolution.
This preliminary information is to inform technicians that GM is placing the B174W Front View Camera Module (ACP2) on...
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part restriction due to elevated replacement rates and ongoing engineering investigation. Technicians must not replace the front camera module unless they have: 1.Completed the diagnostic procedure in this PI, and 2.Contacted TAC and received authorization, including the SI document number and specific step that directs camera replacement.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
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Engineering is working on a new module.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
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Brake after an Ignition Cycle due to an Engineering change.
This Preliminary Information communication provides information to the technician about vehicles that have had multiple...
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repair attempts that are being performed on customers vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.
This Preliminary information communicates ordering process for the front and rear drive units are on restriction for all...
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listed EV vehicles for engineering review.
This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that...
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Engineering is working on a resolution.
This PI communicates information that the Collision / Detection Systems will revert to default setting of Alert and...
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Brake after an Ignition Cycle due to an Engineering change.
This preliminarily information communication an issue with the supercruise dropping out when next to a merging lane and...
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engineering is investigating.
This Preliminary information communicates an issue with the virtual garage door opener not programming to a garage opener.
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Engineering is working on a new module.
Body & Paint
14 bulletinsThis PI states an issue may exist with the liftgate spoiler contacting the body creating a noise.
This Preliminary information communicates to the technician the direction needed when encountering an issue with pinch...
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point protection is inoperative on the front windows.
Customer Satisfaction Program.
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Certain vehicles listed above may experience delamination from the foam windshield seal in higher temperatures. Dealers will inspect, and if necessary, replace the windshield foam seal.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
Certain vehicles may have been built with the incorrect power seat switch on the Drivers door panel.
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Dealers will inspect the Drivers side power seat switch and replace it with the correct assembly, if necessary.
Certain vehicles may have been built with the incorrect power seat switch on the Drivers door panel.
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Dealers will inspect the Drivers side power seat switch and replace it with the correct assembly, if necessary.
This Preliminary information communicates to the technician the direction needed when the customer complains of the...
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charge port door being hard to open.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
This Preliminary information communicates to the technician the repair direction needed to address a window performance...
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issue or noise complaint.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
This Preliminary information communicates to the technician the repair direction needed to correct the foam seal when...
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visible from inside or outside of the vehicle.
This Preliminary information communicates a diagnostic tip on how to resolve a issue of the horn sounding when vehicle...
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doors are being closed and the key in vehicle reminder set to off.
Pre-Delivery & Maintenance
8 bulletinsThis PI advise dealers If U3000 is present, follow the correct service doc by Symptom Byte before contacting PQC; if not...
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present, verify the camera is clean, then contact PQC if no issue is found.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
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Tech is directed to drive a city route to complete the procedure.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
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Tech is directed to drive a city route to complete the procedure.
A vehicle may have a service driver assist message and the technician cannot get the Long Range Radar learn procedure to complete.
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Tech is directed to drive a city route to complete the procedure.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
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Reconnect Labor Code Numbers.
This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance...
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programs.
This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector...
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Reconnect Labor Code Numbers.
The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for...
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causing multiple customer concerns that do not have other diagnostic methods to identify them.
Brakes
6 bulletinsAdditional protection for battery health and to help prevent battery drain Improved charging messaging in the driver...
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display Improved vehicle diagnostics Improves traction and stability control when accelerating or on uneven terrain Improves braking and stopping performance on low-traction surfaces Improves the performance of assisted braking Improved vehicle performance when driving in Reverse on slippery surfaces Better One-Pedal Driving performance Additional protection for battery health and prevention for battery drain Improved accuracy for driver display messages
This Preliminary information communicates to the technician the direction needed when encounter a noise complaint for...
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the rear disc brakes.
This Preliminary information communicates to the technician the direction needed when encounter a noise complaint for...
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the rear disc brakes.
Certain vehicles listed above may have a condition in which the vehicle experiences a reduction in deceleration during a...
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low-speed ABS braking event when the road surface transitions from smooth to rough surfaces. Dealers are to reprogram the Brake System Control Module. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
Certain vehicles may have a condition in which the vehicle experiences a reduction in deceleration during a low-speed...
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ABS braking event when the road surface transitions from smooth to rough surfaces. Dealers are to reprogram the Brake System Control Module. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
This service bulletin provides information for the technicians to use a Customer Concern Verification sheet to...
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facilitate the questions needing to be answered by the customer regarding Automatic Emergency Braking (AEB) issues.
HVAC & Climate
2 bulletinsPI to help diagnose A/C concern
This Preliminary information communicates that the upper compressor mount could be twisted causing a vibration or noise...
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concern while the compressor is running.
Transmission
2 bulletinsImprovements to high voltage battery diagnostics Improvements to transmission diagnostics used for shifting Fixes to...
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protect EV adaptor from overheating while charging
Improvements to the performance of driver assistance features.
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Fixes to help ensure accurate driver display messages and alerts. Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. Fixes to help ensure proper functionality for heating and cooling features. Improvements to night mode lights for shifting gears. Fixes for Daytime Running Lamps turning on when set to Off. Fixes to help prevent erroneous missing key messages on driver display. Fixes for accuracy of low tire pressure alert. Fixes for speed threshold for pedestrian alert
Tires & Wheels
2 bulletinsThis preliminary information communicates information about how to determine if a wheel and tires size change is...
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available.
This service bulletin provides information on Tire Sidewall Irregularities.
Fuel System
2 bulletinsThis PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and...
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advises of warranty direction.
This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for...
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analysis.
Lighting
1 bulletinThis Preliminary information communicates to the technician a diagnostic tip when they encounter a condition that...
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involves the tail lights staying on after the vehicle has been turned off.
Steering
1 bulletinThis Preliminary information communicates to the dealer how to address a customer concern ofa scrapping noise coming...
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from the steering wheel/column area.
Hybrid & EV
1 bulletinCertain vehicles may have been sold with a GM NACS Level 2 EV charging adapter (NACS to J1772) in which a quality issue was identified.
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Dealers are to provide the customer with the latest design charging adapter.
Air Bags & Safety
1 bulletinThis Preliminary information communicates assistance in locating the Rear seat belt comfort guides in the parts catalog.