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Service bulletins for the 2022 Cadillac CT4

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

742 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
PIC6496A2023-06-13. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates the direction a technician needs to take when DTC P30EF is set.
PIT5832H2023-06-13. Service bulletin. BACK OVER PREVENTION. This Preliminary information communicates a diagnostic tip on how to resolve a issue if the serial data authentication configuration did not complete correctly.
PIP59212023-06-13. Service bulletin. EQUIPMENT. This Preliminary information communicates the possibility of the Intake Cam Actuator cover plate screws backing out and making unwanted contact with the Cam Carrier.
08-07-30-026H2023-06-06. Service bulletin. POWER TRAIN. This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
22-NA-2442023-06-05. Service bulletin. EQUIPMENT. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
12-03-10-001E2023-06-05. Service bulletin. WHEELS. This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
N222371151-082023-05-24. Service bulletin. STEERING. Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the heat feature on the steering wheel is not functional on certain 2022 model year vehicles listed above, built beginning November 17, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the steering wheel assembly.
N2223757902023-05-23. Service bulletin. ELECTRICAL SYSTEM. Customer Satisfaction Program - Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain 2022 and 2023 model year vehicles, built beginning December 2, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified, that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the park assist control module and setup the serial data gateway module to restore the Park Assist feature. Some vehicles may also need additional modules to be reprogrammed.
N222371151-072023-05-23. Service bulletin. STEERING. Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the heat feature on the steering wheel is not functional on certain 2022 model year vehicles listed above, built beginning November 17, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the steering wheel assembly.
N222371151-062023-05-18. Service bulletin. STEERING. Customer Satisfaction Program. Due to the industry-wide semiconductor shortage, the heat feature on the steering wheel is not functional on certain 2022 model year vehicles listed above, built beginning November 17, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the steering wheel assembly.
PIP5628F2023-05-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
PIT5971B2023-05-15. Service bulletin. COMMUNICATION: AUTO CRASH NOTIFICATION. This Preliminary information communicates to the technician that GM is aware of this concern with audio loss and the OnStar LED being red. GM is working on a solution to correct this customers concern.
16-NA-0192023-05-10. Service bulletin. POWER TRAIN. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
01-08-42-001P2023-05-09. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
PIE07442023-05-06. Service bulletin. ENGINE AND ENGINE COOLING. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to an abnormal engine noise heard and/or engine stalls and will not restart.
22-NA-2002023-05-06. Service bulletin. ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES. This service bulletin provides repair information to correct a customer concern of Child Safety Lock Update failure.
19-NA-2192023-05-06. Service bulletin. ENGINE AND ENGINE COOLING. This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
17-NA-1702023-05-06. Service bulletin. WHEELS. This service bulletin provides information about the Hunter wheel Road Force balancers that should be utilized for all repairs requiring balance and Road Force measurement.
11-00-89-005W2023-05-06. Service bulletin. UNKNOWN OR OTHER. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
22-NA-2352023-05-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Wireless Charging Intermittent When Using iPhone and Samsung Phones at Offset Positions.
22-NA-1222023-05-06. Service bulletin. POWER TRAIN. This informational bulletin provides a possible cause of transmission issues from debris in the valve body and how to test/diagnose the trans to determine a possible cause of the customer's concern.
21-NA-2812023-05-05. Service bulletin. POWER TRAIN. This service bulletin provides diagnostic information for technicians in cases of an ETRS system fault or a no start condition - If the vehicle needs to be moved, it is recommended to use wheel dollies, tire skates or the NEW Manual Park Release tool DT-52910.
12-03-10-001D2023-05-05. Service bulletin. WHEELS. This service bulletin provides information for dealers/technicians on Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip (Tire Sliding on Wheel).
04-00-89-015Z2023-05-05. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on Warranty Administration – Required Operating Procedures - 8 Points (U.S. Only).
22-NA-2472023-05-04. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This service bulletin provides information to dealership personnel that after performing a brake inspection, brake pad replacement, or any other repair that requires the caliper piston to be reseated may be causing DTC C05B0 to falsely set for eBoost applications.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.