2020 GMC Terrain Technical Service Bulletins

844 technical service bulletins (TSBs) are on record for the 2020 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.

• 10183126Oct 23, 2020Engine. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
• 10183779Oct 21, 2020Fuel system. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
• 10183146Oct 16, 2020Equipment, Engine. This informational bulletin provides information to the tech to discard the PCV drain tube when working on the lower area of the engine.
• 10183792Oct 13, 2020Electrical system. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to multiple DTC?s set after a battery discharge, jump start and/or battery replacement.
• 10183168Oct 13, 2020Fuel system. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.
• 10183780Oct 9, 2020Equipment. This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
• 10183174Oct 8, 2020Body and structure, Equipment. This technical bulletin provides repair information to correct a customer concern of hearing a rattle or ticking noise coming from the B-pillar area.
• 10182540Oct 7, 2020Forward 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".
• 10183790Oct 5, 2020Engine cooling. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) Illuminated and the vehicle is stalling and/or no start.
• 10182535Oct 5, 2020Engine cooling. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10181724Sep 30, 2020Equipment. This Warranty Administration bulletin provides information on Dealer Empowerment for Goodwill, Customer Enthusiasm and Policy (U.S. Only).
• 10181675Sep 29, 2020Equipment, Body and structure. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA) (US dealers only).
• 10181734Sep 28, 2020Equipment, Engine, Electrical system. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Malfunction Indicator Lamp (MIL) Illuminated and the vehicle is stalling and/or no start.
• 10181701Sep 25, 2020Electrical system, Equipment. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
• 10181725Sep 24, 2020Equipment, Engine. This preliminary informational (PI) provides diagnosis and repair information regarding bearing damage or when an engine will not rotate.
• 10181162Sep 23, 2020Equipment. This preliminary information discusses the possibility of a cabin boom type noise and that engineering is investigating the concern.
• 10181160Sep 22, 2020Body and structure. This preliminary information explains a potential issue engineering is investigating into water intrusion into the door passthrough connector and effecting door functions.
• 10181158Sep 22, 2020Engine cooling. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10181679Sep 15, 2020Engine cooling. 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.
• 10181660Sep 2, 2020Transmission and drivetrain. This informational bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
• 10179661Aug 31, 2020Electrical system, Equipment. This Preliminary information communicates a concern on certain 2020 model year vehicles where the navigation estimated time of arrival is incorrect. The technician is to remove the sd card following the procedure to see if it is one of the affected part numbers.
• 10180323Aug 28, 2020Electrical system, Equipment. This technical bulletin provides repair information to correct a customer concern of software issues with Radio Software Version V808.
• 10180302Aug 27, 2020Body 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.
• 10179659Aug 27, 2020Engine cooling. This Preliminary information communicates the possiblilty of the charge air cooler tube becoming disconnected from the throttle body and causing reduced power with dtc P0172 P0299 P0101 P0506 P1101
• 10179658Aug 27, 2020Engine. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10179645Aug 20, 2020Engine. This Preliminary information communicates the possibility of a crank no start or extended crank condition due to exhaust cam reluctor being out of position.
• 10179642Aug 20, 2020Engine, Electrical system, Fuel system. 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…
• 10180697Aug 14, 2020Equipment. This Warranty Administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
• 10180317Aug 14, 2020Tires. This Warranty Administration bulletin is for information on General Motors New Vehicle Tire Warranty Program (U.S. Dealers Only).
• 10180300Aug 10, 2020Equipment. This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.
• 10179625Aug 6, 2020Engine, Equipment. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10180299Aug 5, 2020Equipment. This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
• 10178397Jul 30, 2020Visibility (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.
• 10178394Jul 29, 2020Electrical system. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10178949Jul 28, 2020Transmission and drivetrain, Engine. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
• 10178389Jul 28, 2020Engine, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark test, and a compression test. Technician should also install a vacuum gauge prior to cold start and watch needle for signs of a sticking valve.
• 10178388Jul 28, 2020Transmission and drivetrain. This Preliminary information communicates that a possible trans fluid leak found may only be residual fluid that was left during the assembly process with no repairs needed if no dye is detected after cleaning and re-evaluation.
• 10178972Jul 27, 2020Fuel system. This technical bulletin provides a procedure to replace the fuel filter drain or assembly if found the cause of the customers complaint.
• 10178980Jul 23, 2020Body and structure. This technical bulletin provides repair information to correct a customer concern of finding a sharp edge on the lower outboard corner of a front side door lower molding.
• 10178968Jul 23, 2020Equipment, Engine cooling. This technical bulletin provides a service procedure to correct conditions of Front or Rear Crankshaft Oil Leak, MIL Illuminated with DTC P1101 Set.
• 10179533Jul 15, 2020Engine, Equipment. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Loss of Power, Hesitation and/or Stalls, DTCs P0172, P0299, P0101, P0506 and/or P1101 Set.
• 10179408Jul 10, 2020Body and structure, Equipment. This bulletin provides information to dealers regarding transportation damage repair claim submission requirements.
• 10178365Jul 9, 2020Forward collision avoidance, Electrical system. This Preliminary Information communication provides information to the technician about vehicles that may have a missing Forward Collision System Selection in the radio menu. Dealer should advise the customer General Motors is working on a solution to the concern.
• 10178282Jun 25, 2020Electrical system. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
• 10178288Jun 23, 2020Transmission and drivetrain. This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and information on Submission of Warranty Transaction in Global Warranty Management.
• 10178338Jun 22, 2020Body and structure. This Preliminary information communicates a work around when only 11 digit PUN (Part Unique Number) is seen on Service Solenoid Body Assembly.
• 10178293Jun 15, 2020Equipment. This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
• 10178261Jun 12, 2020Electrical system, Equipment. This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.
• 10178320Jun 11, 2020Engine. This Preliminary information communicates Possible Crank no start or extended crank with DTC p12A6 set current or history. Under Investigation
• 10178270Jun 11, 2020Fuel system. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

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