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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.

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
PIT5444D2019-03-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communication provides information to the technician about the text messaging feature on some newer General Motors infotainment systems. Pair the iPhone to the system then enter the Bluetooth settings menu, select the ?i? icon next to the vehicle name in the device and enable show notifications. The text messaging feature will be available on the next ignition cycle. However with iPhones text messages cannot be responded to when using the infotainment system, they can only be received. For android devices pair the phone to the system during the pairing process the phone will ask you to allow the vehicle to access the device contacts. A second question will pop up on the device asking to allow the vehicle to access the message access profile. Both have to be allowed for the text messaging feature to work.
PIP56112018-12-17. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL); POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates that on a zero/light throttle 1-2 shift, the "D" may flash in the IPC with a flare/slip felt, as a designed calibration characteristic.
PIC63402018-11-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates information to not replace any parts for Favorites unavailable message intermittently. This PI will be deleted and a bulletin created when new software is available.
180952018-08-20. Service bulletin. ENGINE; ELECTRICAL SYSTEM. 18095 - Service Update. Certain 2017 ? 2018 model year Cadillac CTS A, 2018 model year Cadillac ATS, and 2018 model year GMC Terrain vehicles have a condition where a portion of the engine control module (ECM) memory is erased following the programming of other modules in the vehicle. The ECM memory is used to store On Board Diagnostic (OBD) data, such as certain emission diagnostic OBD data, that is to be retained after vehicle key-off and ECM shutdown. Reprogram ECM with updated calibration.
PIP5373B2018-08-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Preliminary Information communication provides the technician with steps on how to program an Engine Control Module when getting a Service Programming System error code E4491 or E4423. In some cases Techline Customer Support Center may need to be contacted to resolve the issue.
181762018-08-06. Service bulletin. POWER TRAIN; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM. 18176 - Customer Satisfaction - Certain vehicles, equipped with the 1.6L diesel engine (RPO LH7), may have a condition where if the engine control module software experiences an internal integrity fault and the transmission may not shift as designed. Reprogram the engine control module.
PIT5399A2018-06-18. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about connectivity concerns when connecting an Apple device via USB cord. Technician should insure the customer is using an original equipment manufacturer Apple USB cable.
17-NA-2622018-06-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides a procedure to perform a RDCCM update to correct a possible clunking noise from the tcase or rear axle clutches.
17-NA-2112018-06-11. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides to the technician, locations to check for possible loose or damaged electrical connections that may set a DTC instead of just replacing a part.
03-08-46-004T2018-06-11. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information on OnStar® VCIM is currently restricted parts. By working closely with our dealers and technicians, through the part restriction process, the General Motors team will gain a better understanding of any field concerns that may develop.
150603002K2018-06-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
150603001D2018-06-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This informational bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
060089026N2018-06-04. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:DOOR; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); VISIBILITY:WINDSHIELD; ELECTRONIC STABILITY CONTROL (ESC). This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
17NA3882018-06-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to reprogram the HVAC control module to correct a condition of HVAC Inoperative During Remote Start Event due to a calibration concern.
PIE0433A2018-06-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Engineering Information ? Malfunction Indicator Lamp (MIL) On DTCs P0171 Fuel Trim System Lean Bank 1 and/or P0174 Fuel Trim System Lean Bank 2.
150603002J2018-06-04. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
150603002I2018-06-04. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
150603001C2018-06-04. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information to diagnose batteries that have set for a long period of time and/or cold weather climates and testing those batteries.
17NA3592018-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on the fact that WMA files are not accepted by the specific radios.
17NA4052018-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides a procedure to replace the radio to correct the condition of Intermittent White or Black Radio Screen When Starting Vehicle and/or Radio Resets Shortly After Start-Up with a Phone Paired due to an internal radio concern.
17NA3592018-06-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This informational bulletin provides information on the fact that WMA files are not accepted by the specific radios.
17NA3562018-06-04. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides a procedure to replace the SD Card or the USB receptacle to correct a condition of Navigation Inoperative with SD Card Error Message Displayed due to a software issue.
17NA2382018-06-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Technical bulletin provides a correction for Wi-Fi Hotspots or Data Sharing Feature Not Working once Turned on.
070604019F2018-06-04. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.
17NA1422018-06-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This informational bulletin provides information on Wireless Charging Module Diagnosis and cell phone compatibility.

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