GMC Terrain: Fuel Additives / Diesel

GMC Terrain 2018-2026 Owners Manual / Driving and Operating / Fuel / Fuel Additives / Diesel

TOP TIER Detergent Diesel is highly recommended for use with your vehicle. If your area does not have TOP TIER Detergent Diesel, GM recommends the use of ACDelco Diesel Fuel Conditioner. This will help you maintain optimal engine performance. GM does not recommend other aftermarket diesel additives. In the event you refuel using low-quality diesel, GM recommends adding ACDelco Fuel System Treatment Plus-Diesel can help clean engine deposits and is available only at your GM dealership.

Gasoline

TOP TIER Detergent Gasoline is highly recommended for use with your vehicle. If your country does not have TOP TIER Detergent Gasoline, add ACDelco Fuel System Treatment Plus−Gasoline to the vehicle’s gasoline fuel tank at every oil change or 15,000 km (9,000 mi), whichever occurs first...

Fuel for Diesel Engines

The selection of a high-quality fuel is important for maintaining optimum vehicle performance. Diesel fuel should meet or exceed the minimum requirements in the most current versions of the local fuel standards Do not use fuel with more than 15 ppm sulfur...

Other information:

GMC Terrain 2018-2026 Owners Manual: Connections

The following services help with staying connected. For coverage maps, see www.onstar.com (U.S.) or www.onstar.ca (Canada). Ensuring Security Change the default passwords for the Wi-Fi hotspot and myGMC mobile application. Make these passwords different from each other and use a combination of letters, numbers, and symbols to increase the security...

GMC Terrain 2018-2026 Owners Manual: Head Restraints

The vehicle’s front seats have adjustable head restraints in the outboard seating positions. Warning With head restraints that are not installed and adjusted properly, there is a greater chance that occupants will suffer a neck/spinal injury in a crash...

Engine Overheating

The vehicle has an engine coolant temperature gauge on the instrument cluster and overheat messages in the Driver Information Center (DIC) to warn of engine overheating. See Engine Coolant Temperature Gauge.