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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
PI0281G2018-05-21. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS. This preliminary informational bulletin provides information to dealership personnel which may be helpful when addressing underbody component corrosion with customers.
150603002M2018-05-21. Service bulletin. EQUIPMENT. This bulletin provides information on approved warranty part numbers for original equipment batteries.
150603002L2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
130089010B2018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information to dealership personnel on policies regarding a Product Assistance Claim (PAC) within the Courtesy Transportation Assistance Program.
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.
080730035C2018-05-21. Service bulletin. POWER TRAIN. This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
18NA1162018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information on Install API Manager Message Displayed After Radio Replacement and that the process was not followed correctly if this image appears of replacing the radio.
18NA1102018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information on Recovery of Failed USB Radio Programming Event.
18NA0992018-05-21. Service bulletin. EQUIPMENT. This informational bulletin provides information for use on a Product Assistance Claim (PAC), which is formally known as a Product Allegation Resolution (PAR) claim.
18NA0972018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). This technical bulletin provides a procedure to reprogram the TCM to correct a condition of Vehicle Wont Shift Out of Park, Stuck in Gear or Tie Up Feeling on 1-2 Shift, Wont Shift Into Park or Reverse, PRNDL May Blink with Possible DTC P187D, P2731, or U0100.
PIT56132018-05-21. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary information communicates information to the technician about the HVAC pop-up on the radio display may show 61 degrees but the display on the HVAC knobs will show correct temp. Only the radio pop-up is showing the incorrect information. Technicians should not make any repairs. Dealer should communicate to the customer that we apologize for this inconvenience and that General Motors is working on a soulution.This PI will be replaced with a bulletin once repair information is available.
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.
PIP5456B2018-05-21. Service bulletin. FUEL SYSTEM, DIESEL. This Preliminary Information communication advises the technician that the 1.6L Diesel Engine (RPO LH7) engine exchange program has ended.
PIT5411L2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary Information communication advises the technician that the Human Machine Interface, Radio or Tuner, radio controls, Integrated Center Stack, and displays are placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
17NA1982018-05-21. Service bulletin. SEATS. This technical bulletin provides a procedure to disengage the jammed parts and release the gears for proper function caused by the mechanical of the height adjustment being jammed, not broken creating a condition of difficult to adjust the seat height and/or seat stuck mostly in lowest position.
17NA1522018-05-21. Service bulletin. SEATS. This technical bulletin provides repair information to correct a customer concern of front seat slight rocking movement while shifting weight from seat, during hard stops, and/or when driving over rough road surface.
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.
18NA0952018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL; BACK OVER PREVENTION: SENSING SYSTEM: CAMERA; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin provides a procedure for the rear view driver information camera and rear license plate lamp wiring harness replacement due to the wrong parts being installed at the factory.
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.
PIE0436A2018-05-21. Service bulletin. EQUIPMENT:ELECTRICAL. This engineering information is requesting information from the field on vehicles that have the condition of Speaker Rattle, Speaker Crackle, Poor Sound Quality, Speaker Pop, or Speaker Distortion.
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.
PIE0450A2018-05-21. Service bulletin. ENGINE. This engineering informational bulletin is requesting information from the field on vehicles that have the condition of Vehicle No Start/Slow Crank.

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