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
| 18NA199 | 2019-03-25. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This technical bulletin provides repair information to correct a customer concern of the sunroof inoperative after cycling, and/or the sunroof window function is slow. |
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| 18NA347 | 2019-03-25. Service bulletin. EQUIPMENT. This bulletin provides a procedure for dealers/technicians to manually adjust Clock. |
| 18NA300 | 2019-03-25. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This technical bulletin provides a procedure to program the ECm to correct a false code that may set. |
| 18NA246 | 2019-03-25. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 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. |
| 18NA162 | 2019-03-25. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure air conditioning refrigerant desiccant replacement due to refrigerant loss. |
| 18NA054 | 2019-03-25. Service bulletin. POWER TRAIN. This technical bulletin provides a procedure to replace the transmission valve body separator plate for an upshift condition. |
| 18NA020 | 2019-03-25. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. 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. |
| 17NA330 | 2019-03-25. Service bulletin. STEERING; EQUIPMENT:ELECTRICAL. This informational bulletin provides information for the customer to pair their phone in order for the push to talk button on the steering wheel control to work. |
| 17NA153 | 2019-03-25. Service bulletin. LATCHES/LOCKS/LINKAGES:HATCHBACK/LIFTGATE:LOCK. This informational bulletin provides information and operating tips for the hands free lift gate. |
| 17NA066 | 2019-03-25. Service bulletin. POWER TRAIN; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information for automatic transmission Oil Cooler Flush and flow test. |
| PIE0489A | 2019-03-18. Service bulletin. EQUIPMENT. This engineering information PI ends the need for information from the field for an MIL Lamp On, DTC P0403 Set. |
| 17NA073 | 2019-03-18. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information regarding the field action courtesy transportation policy. |
| 16NA338 | 2019-03-18. Service bulletin. POWER TRAIN. 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. |
| 15NA087 | 2019-03-18. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin advises the technician to rest the MIL and diagnose additional DTCs for why the code is setting and disabling the start/stop system. |
| 100089005H | 2019-03-18. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs. |
| 080089014D | 2019-03-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. 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). |
| 040089015T | 2019-03-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information on required operating procedures. |
| 030603004X | 2019-03-18. Service bulletin. EQUIPMENT:ELECTRICAL. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements. |
| 010089010M | 2019-03-18. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information on comebacks prevention information and using customer concern verification sheets (CCVS). |
| 19NA013 | 2019-03-18. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. This technical bulletin provides repair information to correct a customer concern of hearing a ticking or popping noise at roof rail assist handle(s). |
| PIT5647 | 2019-03-18. Service bulletin. POWER TRAIN. This preliminary information is released to provide engineering information on a noise from the rear drive system. Will be updated or removed after data is gathered . |
| PIC6073E | 2019-03-18. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about the Media Oriented Systems Transport Bus Diagnostic Tool Kit (EL-51578) has been released to help diagnose any of the Media Oriented Systems Transport bus concerns. The kit contains header connectors that are installed to bypass Media Oriented Systems Transport bus modules. The bypass connector also contains a terminal for verifying Media Oriented Systems Transport control circuit voltages. Technician should review Media Oriented Systems Transport bus description and operation and Diagnostic Trouble Code U0028 diagnostic procedures. |
| PIT5214D | 2019-03-18. Service bulletin. SUSPENSION. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support. |
| PIC5650F | 2019-03-18. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies. |
| PIP5428E | 2019-03-18. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician that the restriciton on ECM part numbers 55501366, 55502052 and 55485591 has ended. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.