Service Update
GMC technical service bulletin 18036 for 2018 GMC Terrain.
- Bulletin number
- 18036
- Component
- Electrical system
- Summary
- 18036 - Service Update. Certain vehicles without an auto high beam option (RPO TQ5) may have been assembled with the incorrect high beam turn signal multifunction switch (TMFS). When customers press the auto high beam button on the high beam TMFS switch nothing will happen. High beams will operate if the customer push/pulls the TMFS. Dealers are to replace the TMFS, and inform the customer that their vehicle is not equipped with the auto high beam feature.
Owners of these vehicles have filed 35 complaints in the electrical category.
Vehicles covered
- GMC Terrain 2018 2018
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