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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
17-NA-0672018-05-21. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin provides information on On rare occasions, a security code input message with SPS error code E5659, M5304, and/or M5530 may be displayed in TIS2web when the technician is programming any module. If this concern is encountered, the technician should start by ensuring that the module being programmed is not a used module and that the VIN matches on VIN plate, TIS2web programming screen, and GDS2 module identification information screen.
15-NA-0872018-05-21. Service bulletin. ELECTRICAL SYSTEM. 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.
18NA1382018-05-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This technical bulletin provides a procedure to replace the HMI module to correct a condition of Radio Control (ICS) Display Does Not Remain Off at Times after it Has Been Turned Off in the Radio Settings Menu due to a software concern.
18NA1262018-05-21. Service bulletin. STRUCTURE; ELECTRICAL SYSTEM. This informational bulletin provides information for dealership personal and technicians when replacing the body control module (BCM), that a 2nd design BCM is NOT interchangeable with the 1st design BCM.
17NA3122018-05-21. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to repair the shutter harness if corrosion is found in the electrical connection.
PIE0451A2018-05-21. Service bulletin. ELECTRICAL SYSTEM. This engineering information bulletin is requesting information from the field on vehicles that have the condition of Malfunction Indicator Lamp Illuminated with DTC P059F Set.
PIE04512018-05-21. Service bulletin. ELECTRICAL SYSTEM. This engineering information bulletin is requesting information from the field on vehicles that have the condition of Malfunction Indicator Lamp Illuminated with DTC P059F Set.
1208132001E2018-05-21. Service bulletin. ELECTRICAL SYSTEM. This informational bulletin explains to the dealer how to cover a possible customers mistake when a fuse has been blown.
PIT56122018-05-21. Service bulletin. ELECTRICAL SYSTEM. This preliminary information explains a possibility that the sunroof could become inoperative because the module lost memory and that engineering is evaluating the concern.
PIT56112018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This preliminary information is regarding a condition where the the SDM loses communication due to a software issue.
17NA1472018-05-21. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to perform diagnostics on the codes set and if no problem is found, to replace either the input or output speed sensor.
17NA3562018-05-21. 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.
17NA3302018-05-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. 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.
18NA0922018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:WIRING. This technical bulletin provides a procedure to repair a bad terminal and re-route the harness to prevent the future event of Radio Audio Randomly Cuts Out DTC U18B4 - Lost Communication with Radio on Ethernet Bus from happening again.
17NA2382018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Technical bulletin provides a correction for Wi-Fi Hotspots or Data Sharing Feature Not Working once Turned on.
PIE0447A2018-05-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This engineering information bulletin is requesting information from the field on vehicles that have the condition of Infotainment System Freezing and or Touch Screen Not Responding.
110849001W2018-05-21. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This technical bulletin provides information on Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the transport mode message on and off.
17NA2152018-05-21. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to properly reprogram an onstar module to correct a condition of Red LED, No WiFi Operation, and/or Limited OnStar® Module Functionality After OnStar Module Replacement for Another Condition.
PIE04542018-05-21. Service bulletin. STRUCTURE:BODY:DOOR; ELECTRICAL SYSTEM; VISIBILITY:POWER WINDOW DEVICES AND CONTROLS. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Front Door Window Switch Inoperative.
PIE04512018-05-21. Service bulletin. ELECTRICAL SYSTEM. This engineering information bulletin is requesting information from the field on vehicles that have the condition of Malfunction Indicator Lamp Illuminated with DTC P059F Set.
PIE04482018-05-21. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Service Airbag Indicator Illuminated with DTC U0151 Set.
PIE04472018-05-21. Service bulletin. ELECTRICAL SYSTEM. This engineering information bulletin is requesting information from the field on vehicles that have the condition of Infotainment System Freezing and or Touch Screen Not Responding.
090604026N2018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada
030603004W2018-05-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
18NA0512018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM:SOFTWARE. This technical bulletin provides a procedure to update the radio with the latest calibrations to correct a condition of TTY Phone Feature Icon Missing from Radio Display Setting due to a software abnormality.

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