GMC Terrain: Diesel Exhaust Fluid / Service Exhaust Fluid System

If a problem occurs with the DEF system, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW – 160 KM

(99 MI) UNTIL 104 KM/H (65 MPH) MAX SPEED displays. The displayed mileage will decrease as driving continues. A warning light also comes on. In some cases this message will clear itself, indicating that the DEF system was able to correct the condition. If the DIC message persists, see your dealer or additional DIC messages may display.

When the mileage countdown is zero, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - TRANSITIONING TO 104 KM/H (65 MPH) MAX SPEED displays. A warning light and a chime also come on. Vehicle speed will be reduced to a maximum speed limit of 104 km/h (65 mph).

After the transition to 104 km/h (65 mph) is complete, a DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - SPEED LIMITED TO 104 KM/H (65 MPH) – 120 KM (75 MI) UNTIL 88 KM/H (55 MPH) MAX SPEED displays. The displayed mileage will decrease as driving continues. A warning light and a chime also come on.

When the mileage countdown is zero, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - TRANSITIONING TO 88 KM/H (55 MPH) MAX SPEED displays. A flashing warning light and a chime also come on. Vehicle speed will be reduced down to a maximum speed limit of 88 km/h (55 mph).

After the transition to 88 km/h (55 mph) is complete, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - SPEED LIMITED TO 88 KM/H (55 MPH) – 120 KM (75 MI) UNTIL 8 KM/H (5 MPH) MAX SPEED displays. The displayed mileage will decrease as driving continues. A flashing warning light and a chime also come on.

When the mileage countdown is zero, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - TRANSITIONING TO 8 KM/H (5 MPH) MAX SPEED displays. A flashing warning light and a chime also come on. Vehicle speed will be reduced to a maximum speed limit of 8 km/h (5 mph).

After the transition to 8 km/h (5 mph) is complete, the DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL NOW - SPEED LIMITED TO 8 KM/H (5 MPH) displays. A flashing warning light and a chime also come on.

    Exhaust Fluid Quality Poor

    Use only exhaust fluid that is GM approved, or fluid containing the API certified or ISO 22241 label. All DEF has an expiration date. If the system detects poor quality, or contaminated or diluted DEF, the DIC message EXHAUST FLUID QUALITY POOR - SEE OWNERS MANUAL NOW – 160 KM (99 MI) UNTIL 104 KM/H (65 MPH) MAX SPEED displays...

    Service Emission System

    If a problem occurs with the vehicle emission system, the DIC message SERVICE EMISSION SYSTEM - SEE OWNERS MANUAL NOW – 282 KM (175 MI) UNTIL 104 KM/H (65 MPH) MAX SPEED displays...

    Other information:

    GMC Terrain 2018-2025 Owners Manual: Engine Oil Life System


    When to Change Engine Oil This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably...

    GMC Terrain 2018-2025 Owners Manual: Tire Rotation


    Tires should be rotated every 12 000 km (7,500 mi). See Maintenance Schedule. Tires are rotated to achieve a more uniform wear for all tires. The first rotation is the most important. Anytime unusual wear is noticed, rotate the tires as soon as possible, check for proper tire inflation pressure, and check for damaged tires or wheels...

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