2023 Chevrolet Suburban 1500 Technical Service Bulletins

615 technical service bulletins (TSBs) are on record for the 2023 Chevrolet Suburban 1500. 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.

• 11038596Oct 17, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11038460Oct 7, 2026Other or unknown. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
• 11038139Oct 5, 2026Other or unknown. This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
• 11038136Sep 28, 2026Other or unknown. This preliminary information is for technicians that may see DTCs that are history and should not perform any part replacements. They should follow the notes mentioned prior to anything being replaced.
• 11038132Sep 28, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
• 11037445Sep 15, 2026Other or unknown. This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly.
• 11037320Sep 10, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
• 11037258Sep 3, 2026Other or unknown. This PI is created to inform GM dealers that some vehicles may intermittently fail to connect wireless Apple CarPlay or Android Auto after Bluetooth pairing during the first key cycle. The condition is caused by a software anomaly. Do not replace parts. Engineering is investigating the root cause; customers may continue to drive the vehicle. This PI will be updated or replaced by a TSB once a resolution is…
• 11036702Aug 26, 2026Other or unknown. This PI provides a diagnostic tip when fuse F4DR is opening and dealerships are to inspect the wiring at the center console lid.
• 11036392Aug 20, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
• 11035693Jul 28, 2026Other or unknown. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
• 11035351Jul 24, 2026Other or unknown. This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
• 11035340Jul 21, 2026Other or unknown. PI to help diagnose A/C concern
• 11035291Jul 16, 2026Other or unknown. • Improves transmission diagnostic software. • Reduces unnecessary check engine light activations.
• 11034769Jun 23, 2026Other or unknown. This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
• 11033986Jun 9, 2026Other or unknown. This Preliminary information communicates an issues with the HVAC making a hum buzz noise when the blower is set to a higher speed. Engineering is working on a new HVAC door seal material to correct the noise.
• 11033753Jun 5, 2026Other or unknown. This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool
• 11033150May 27, 2026Other or unknown. 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 available.
• 11032948May 19, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11032788May 15, 2026Other or unknown. This Preliminary information communicates recovery procedure after return to dealer message.
• 11032787May 15, 2026Other or unknown. This PI is to inform the techs to check for binding in the mode door pivot.
• 11032784May 14, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032783May 14, 2026Other or unknown. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
• 11032767May 11, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032764May 11, 2026Other or unknown. Pi created to provide GM dealers with information on gathering information for projection issue
• 11032763May 11, 2026Other or unknown. This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
• 11032658May 8, 2026Other or unknown. PI created to provide dealer technicians with procedures for updating Google Maps.
• 11032625May 8, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to recover an IOK radio.
• 11032624May 8, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11032579May 4, 2026Other or unknown. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
• 11032560Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11032559Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers a procedure to reset the radio.
• 11031749Apr 30, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11031946Apr 24, 2026Other or unknown. This Preliminary Information communicates direction for different audio issues with RPO UQA, UQF, UQS, or NKD
• 11031745Apr 23, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
• 11030522Mar 26, 2026Other or unknown. • Fixes to help prevent false Service Driver Assist System messages. • Improvements to connectivity for OnStar.
• 11030355Mar 26, 2026Other or unknown. This Preliminary information communicates an issue with ABS SES MIL / Service Brake System / Service StabiliTrak / BSCM DTC P0606 P0562 and dealers to perform additional battery and connection testing.
• 11030094Mar 9, 2026Other or unknown. This Preliminary information communicates an issue with the SES MIL and DTC P062B and engineering is currently investigating.
• 11030092Mar 9, 2026Other or unknown. This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
• 11030091Mar 9, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
• 11029958Mar 6, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11029949Mar 5, 2026Other or unknown. This PI is to instruct dealer on diagnostic procedures that need to be completed prior to replacing a radio or IPC display
• 11029953Mar 2, 2026Other or unknown. This PI communicates information informing dealers that Engineering is aware of the clunk noise and is currently investigating a root cause.
• 11029950Mar 2, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
• 11029449Feb 27, 2026Other or unknown. This Preliminary information communicates to dealers steps to follow to obtain an IOK radio.
• 11028942Feb 20, 2026Other or unknown. This preliminary information communicates an issue with the key fob buttons inoperative and how to resync the fobs back to the vehicle.
• 11028948Feb 19, 2026Other or unknown. PI to explain normal operation for a concern that the outside rearview mirrors may not fold when the doors are locked, due to the personalization settings for Auto Door Unlocking.

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