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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

Bulletins, newest first
PIP56152019-03-18. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates that a Engine Control Module (ECM) service update calibration for P0421.
PIP5598A2019-03-18. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the possibility of a crank no start or extended crank condition due to exhaust cam reluctor being out of position.
PIC6343A2019-03-18. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates information on 3 IPC Speedlimit concerns. Displayed speed limit is stuck on a value, not updating as the roadway speed limit changes. 2. Speed limit displays no value or is blank. 3. The speed limit unit of measurement (KPH/MPH) flashes. for Cadillac Models only). Technicians are to reprogram the radio for condition 1. Condition 2 and 3 are being researched by engineering and no repairs are currently available.
PIP5540B2019-03-18. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
PIC63432019-03-18. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates information on 3 IPC Speedlimit concerns. Displayed speed limit is stuck on a value, not updating as the roadway speed limit changes. 2. Speed limit displays no value or is blank. 3. The speed limit unit of measurement (KPH/MPH) flashes. for Cadillac Models only). Technicians are to reprogram the radio for condition 1. Condition 2 and 3 are being researched by engineering and no repairs are currently available.
PIP4925B2019-03-18. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This preliminary information document communicates a tip on the way to diagnose possible induction or exhaust air leaks using the evaporative emission cart smoke machine and ultrasonic leak detector tools.
18NA0862019-03-18. Service bulletin. LANE DEPARTURE. This technical bulletin provides a procedure to replace the Front Seat Lane Departure Warning Actuator if the B172E is set in the seat control module.
18NA0352019-03-18. Service bulletin. POWER TRAIN. This informational bulletin explains a normal characteristic of a trans shift when cold temps are present.
18NA0202019-03-18. Service bulletin. ENGINE AND ENGINE COOLING. 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.
17NA2762019-03-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Loss of Phone Pairing or Favorites, Last Setting of Volume, Station, App, and Audio Settings Change When Vehicle Shuts Down in Demo Mode and that this is considered a normal characteristic of the vehicle in demo mode.
PIT56552019-03-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates that a customer may complain of when a Bluetooth call is received the ringing will be continuous for the rest of the drive cycle . It may be noted that this only seems to occur when using an Android device on OS 9.0. This may be caused by a software concern in the phone. The dealer is instructed that the phone manufacture is working on a software update to resolve the concern.
PIT4945H2019-03-11. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician being unable to program fobs to the vehicle. Technician will need to ensure the key FOB is a new unit and has not been programmed to another vehicle previously.
PIP5540D2019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.
PIP56282019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. 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
PIP5615A2019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates that a Engine Control Module (ECM) service update calibration for P034A, P0421, P050F, P059F, P111E, P11DC, P122D, P1488, P220B, P22FE, P2457, P2463, P2BAA.
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.
PIP56232019-03-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates that a rotational clicking noise heard after engine shut down is a design characteristic and no repairs should be attempted.
PIT5353C2018-12-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication provides information to the technician about what XM offerings are available for vehicles. A dealer or customer can access the website listed below for vehicle specific XM offerings and availability.
PIC6048J2018-12-17. Service bulletin. LANE DEPARTURE; SEATS. This Preliminary Information communicates to the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
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.
PIP5483B2018-12-17. Service bulletin. ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates noises are considered to be normal operating characteristics of the vehicle when shut off. It will not impact the designed performance or reliability of the vehicle.
PIT5608B2018-11-26. Service bulletin. STRUCTURE:BODY:DOOR. This preliminary information explains a potential issue engineering is investigating into water intrusion into the door passthrough connector and effecting door functions.
PIP56012018-11-13. Service bulletin. EQUIPMENT. This Preliminary information communicates
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.
PIT4945G2018-11-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Preliminary Information communication provides information to the technician being unable to program fobs to the vehicle. Technician will need to ensure the key FOB is a new unit and has not been programmed to another vehicle previously.

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