2018 GMC Terrain Technical Service Bulletins

1,345 technical service bulletins (TSBs) are on record for the 2018 GMC Terrain. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10161947May 30, 2019Equipment. This Technical bulletin provides a procedure for dealers/technicians on the release of Radio Software Version 22.8 Over-the-Air Update.
• 10161941May 29, 2019Electrical system, Engine cooling, Engine. This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.
• 10161886May 29, 2019Transmission and drivetrain. This technical bulletin provides a procedure to replace the left front half shaft with the PN# listed below which has a dampener to correct this issue.
• 10161046May 28, 2019Equipment. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
• 10161889May 22, 2019Engine, Equipment. This informational bulletin provides information for dealers/technicians on HVAC Pop-Up May Display 61 Degrees and Have Empty HVAC Setting Icons.
• 10161932May 21, 2019Engine cooling. This informational bulletin advises of a new fuel injection kit used for decarbonizing the intake valves, and explains how toptier fuels should be used to reduce carbon build up.
• 10161968May 20, 2019Transmission and drivetrain. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
• 10161037May 20, 2019Equipment. 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 manufacturer is working on a software update to resolve the…
• 10161934May 15, 2019Engine 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.
• 10161019May 15, 2019Forward collision avoidance. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
• 10161953May 13, 2019Electrical system. This Technical bulletin provides a Correction for a Condition of OnStar Red LED Illuminated - DTCs U18B4, U18B5, U18AF Set.
• 10161014May 13, 2019Fuel system, Engine. This Preliminary information communicates A vehicle may have a concern of running poor and stalling. No trouble codes may be set referencing this condition. Fuel trims around -20% may be observed on both banks. Engine oil level will be found over full and have a fuel odor. It will be found that the Engine oil is diluted with fuel. Small gas engines (SGE) May only have the engine oil level over full and have a fuel…
• 10161946May 9, 2019Engine cooling, Body and structure. This technical bulletin provides a procedure to add flocking tape the radiator mount sleeves to reduce the knocking noise caused by the excessive movement.
• 10161906May 9, 2019Tires. This informational bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).
• 10161885May 9, 2019Engine cooling, Engine, Equipment. This technical bulletin provides a procedure to replace the HVAC case with the redesigned part.
• 10161929May 8, 2019Equipment. This warranty administration bulletin provide policy information to cover GM's policy on performing GM covered vehicle services and maintenance on vehicles originating/sold in Canada.
• 10161931May 7, 2019Engine cooling. This informational bulletin provides a procedure on how to perform a quick test to check if the DPF is the cause of excessive soot from the tailpipe.
• 10160987May 7, 2019Engine. This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.
• 10161353May 6, 2019Transmission and drivetrain. N182200470 - Customer Satisfaction - Certain 2018 model year Buick Enclave and LaCrosse vehicles, and 2018 - 2019 model year GMC Terrain vehicles, may have a condition that occurs when the driver places the vehicle in neutral immediately following an auto start from an auto stop condition. The transmission can become stuck in a command that will cause damage to the transmission clutch plates. Reprogram Transmission…
• 10160983May 6, 2019Equipment, Engine. This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
• 10161938May 3, 2019Equipment. This technical bulletin provides a procedure to information on OnStar will update vehicles remotely through in-vehicle prompts from the radio display. However, some customers may decline the vehicle update or the update is attempted, but is not successful. In such cases, and in all export markets plus fleet customers, dealers will need to reprogram the vehicle with the new software package.
• 10161907May 2, 2019Equipment. This informational bulletin provides information for dealers/technicians on Use of Dealer Case Management (DCM) and Being Prepared for Contacting U.S. Technical Assistance (TAC).
• 10161895May 2, 2019Transmission and drivetrain. This technical bulletin provides repair information to correct a customer concern of hearing a click or tick noise coming from the rear of the vehicle at low speeds, when AWD is engaged.
• 10161976May 1, 2019Visibility (wipers, defrost, mirrors). This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a loose rear wiper arm.
• 10160703Apr 30, 2019Electrical system. This Preliminary information communicates information on IPC Speedlimit concerns. Speed limit displays no value, toggles between values, or is blank. (All models) The speed limit unit of measurement (KPH/MPH) flashes. (for Cadillac Models only). Concern being researched by engineering and no repairs are currently available.
• 10160702Apr 30, 2019Electrical system, Steering. This preliminary information is created to make the service technician aware of a condition where the ground for the steering module may not have a sufficient ground path.
• 10160701Apr 30, 2019Body and structure, Engine. This Preliminary information communicates an issue with the radiator lower mount that sounds as if it is coming from behind the front wheels.
• 10160420Apr 29, 2019Tires. This warranty administration bulletin provide policy information on tires are not meeting tread depth expectations, or wearing out (reaching 2/32”) too quickly.
• 10160121Apr 26, 2019Body and structure. This technical bulletin provides repair information to correct a customer concern of seeing or feeling a sharp edge on the upper inboard corner of the rear body structure stop lamp.
• 10160086Apr 26, 2019Equipment, Body and structure. This informational bulletin provides information and operating tips for the hands free lift gate.
• 10160690Apr 24, 2019Fuel system, Engine. This Preliminary information communicates to the dealer an issue where the vehicle's engine may crank over unprompted and not start afterward. This is the result of hooking up the Active Fuel Injector Tool incorrectly on vehicles equipped with a direct fuel injection system. This Preliminary information instructs the dealer of a repair kit they received that will prevent this issue when installed correctly.
• 10160688Apr 24, 2019Equipment, Visibility (wipers, defrost, mirrors). This Preliminary Information communication provides information to the technician about vehicles that have may a helicopter type noise when a rear window is lowered. This is a normal characteristic of this vehicle, but the concern can be minimized by lowering a front door glass approximately 1 to 2 inches.
• 10160682Apr 23, 2019Visibility (wipers, defrost, mirrors). This Preliminary Information communication advises the technician the steps on diagnosing the concern. Customer's sunroof operation intermittent, bind, noise, auto-reverse, and/or water leaks.
• 10160678Apr 18, 2019Steering, Electrical system. This preliminary information is created to make the service technician aware of a condition where the ground for the steering module may not have a sufficient ground path.
• 10160419Apr 18, 2019Engine, Electrical system. This technical bulletin provides repair information to correct a customer concern of Start/Stop Performance, Hesitation From a Stop, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0132 and/or P0138 Set.
• 10160672Apr 16, 2019Equipment. This Preliminary Information communication provides information to the technician about vehicles that the Navigation radio does not have a global positioning system location but OnStar is able to accurately locate the vehicle. Technician should check the installation of the COAX cables to be router correctly. Technician will gain access to the Radio or Human Machine Interface depending on the vehicle build. Install…
• 10160421Apr 16, 2019Equipment, Engine cooling. This informational bulletin provides information to the tech to discard the PCV drain tube when working on the lower area of the engine.
• 10160662Apr 12, 2019Electrical system. This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
• 10160653Apr 10, 2019Engine. 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.
• 10160633Apr 2, 2019Engine, Electrical system. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
• 10160137Apr 2, 2019Engine. This engineering information PI ends the need for information from the field on reduced engine power, DTC P0299 set.
• 10160133Apr 2, 2019Equipment, Transmission and drivetrain. This informational bulletin provides normal operating characteristics and diagnostic information on Manual transmissions.
• 10160135Apr 1, 2019Equipment. This informational bulletin provides information on proper use of floor mats.
• 10160132Apr 1, 2019Electrical system. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10160128Apr 1, 2019Engine. This technical bulletin provides a procedure to also program the ECM when replacing the O2 Sensors.
• 10158820Mar 28, 2019Electrical system. This technical bulletin provides to inspect and clean the grounds that may cause the customers MIL concern.
• 10158819Mar 28, 2019Engine. This technical bulletin provides a procedure to change the oil if excessive fuel has been found in the oil and the cause of the DTC set. Also replacing the PCV valve in camshaft cover and updating the ECM with latest software.
• 10158864Mar 26, 2019Equipment. This warranty administration bulletin provides information on Dealer Empowerment Labor Operations and Customer Enthusiasm.
• 10158808Mar 26, 2019Brakes. This Technical bulletin provides information for rear brake pad replacement to correct a squeak type noise heard from the rear brakes when cold.
• 10158859Mar 25, 2019Equipment. This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles.

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