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Service bulletins for the 2018 GMC Terrain

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.

1345 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Lighting are shown. Show all

Bulletins, newest first
01-08-42-001Q2025-02-11. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
22-NA-2442024-05-30. Warranty extension. ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
02-08-42-001J2024-01-19. Service bulletin. EXTERIOR LIGHTING. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
22-NA-1702023-10-10. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS; EXTERIOR LIGHTING. This bulletin offers Information on Possible Crank No Start or Extended Crank with DTC P12A6 or Service Safety Restraints message on DIC, with B0073.
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.
01-08-42-001O2023-02-28. Service bulletin. EXTERIOR LIGHTING. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
22-NA-1702022-10-07. Service bulletin. EXTERIOR LIGHTING; AIR BAGS; ELECTRICAL SYSTEM. This bulletin offers Information on Possible Crank No Start or Extended Crank with DTC P12A6 or Service Safety Restraints message on DIC, with B0073.
22NA0022022-06-21. Service bulletin. EXTERIOR LIGHTING; POWER TRAIN. This informational bulletin provides a Malfunction Indicator Lamp illuminated or a reduced power complaint.
18NA0202022-05-31. Service bulletin. EXTERIOR LIGHTING. This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.
18239012022-02-14. Service bulletin. ELECTRICAL SYSTEM; AIR BAGS; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM); EXTERIOR LIGHTING. Emissions Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with 4-cylinder engines (RPO LHN, LEX, L3A, LYX, LKN, LE2, LCV or LTG). On some vehicles, an electrical connection in the circuit board may fail in the engine control module. If this occurs, a malfunction indicator lamp (MIL), such as the Check Engine Light may illuminate. Replace the Engine Control Module (ECM).
010842001N2021-08-09. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.
PIP5247A2021-05-17. Service bulletin. SERVICE BRAKES; ENGINE AND ENGINE COOLING; EXTERIOR LIGHTING. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P06DE set in the Engine Control Module. P0651 may also be set in the ECM with the P06DE. Technician must follow published Service Information diagnostics for P06DE. If diagnostics lead to removing the oil pan or engine oil pressure is below specification when hot, to inspect the oil piston nozzles for damage. Technician should replace the broken oil nozzle(s) as long as the engine does not have any damage which warrants engine replacement.
174272021-04-30. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; EXTERIOR LIGHTING:TURN SIGNAL; ELECTRICAL SYSTEM:SOFTWARE. Condition Certain 2018 model year GMC Terrain vehicles equipped with a trailer package (RPO V92) may have a trailer turn signal and brake lamp that is inoperative on a connected trailer due to an incorrect calibration. Correction Dealers are to reprogram the body control module.
20NA0542020-04-27. Service bulletin. EXTERIOR LIGHTING; BACK OVER PREVENTION: CAMERA SYSTEM. This informational bulletin provides information for dealers/technicians on Rear View Camera Guidance Lines Dim After Radio Replacement or Programming.
18NA0202020-01-27. Service bulletin. EXTERIOR LIGHTING. This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.
010842001M2019-12-16. Service bulletin. EQUIPMENT; EXTERIOR LIGHTING; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Replacement Guidelines.
010842001L2019-03-25. Service bulletin. EXTERIOR LIGHTING. This informational bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Replacement Guidelines.
18NA0322018-05-21. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING:TURN SIGNAL:SWITCH. This technical bulletin provides a procedure to replace the turn signal switch with the correct one due to the wrong one being installed at the plant.
180362018-05-07. Service bulletin. ELECTRICAL SYSTEM; EXTERIOR LIGHTING. 18036 - Service Update. Certain vehicles without an auto high beam option (RPO TQ5) may have been assembled with the incorrect high beam turn signal multifunction switch (TMFS). When customers press the auto high beam button on the high beam TMFS switch nothing will happen. High beams will operate if the customer push/pulls the TMFS. Dealers are to replace the TMFS, and inform the customer that their vehicle is not equipped with the auto high beam feature.

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