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Service bulletin 24-NA-166

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11010829
Published by NHTSA2024-11-27
Manufacturer's number24-NA-166
Manufacturer's date2024-10-15
NHTSA componentUNKNOWN OR OTHER; ELECTRICAL SYSTEM

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Trouble codes named

C1171, C1172, C1173, C1174

Vehicles listed
BUICK ENCLAVE2025
CHEVROLET TRAVERSE2024
GMC ACADIA2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
25-NA-0212025-12-03. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Radio Software Update W23E-178.1.2-M174-SQBR6-93.3.
24-NA-2722025-12-03. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Park Assist False Alerts on Z71 Traverse.
24-NA-1662025-12-02. Service bulletin. This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.
25-NA-0742025-10-16. Service bulletin. Some customers may comment on rear body structure stop lamp or rear closure signal lamp may be totally inoperative or staying illuminated.
24-NA-1662025-07-08. Service bulletin. This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.
24-NA-2442025-06-26. Service bulletin. This bulletin provides a procedure to program the PCM to latest software to correct a condition of cold start rough idle w/DTC P050D.
22-NA-2422025-06-16. Service bulletin. This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.
25-NA-0432025-06-11. Service bulletin. This service bulletin provides information for dealers/technicians on K313 Occupant Presence Module Information When Setting DTCs.
24-NA-1762025-06-11. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Turn Signal Over Cancelling.
24-NA-1422025-06-07. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Steering Wheel Oscillation while in Super Cruise Mode.