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: Vehicle Data Recording and Privacy
The vehicle has a number of computers that record information about the vehicle’s performance and how it is driven. For example, the vehicle uses computer modules to monitor and control engine and transmission performance, to monitor the conditions for airbag deployment and deploy them in a crash, and, if equipped, to provide antilock braking to help the driver control the vehicle...
GMC Terrain 2018-2025 Owners Manual: Charging System Light
The charging system light comes on briefly when the ignition is turned on, but the engine is not running, as a check to show the light is working. The light turns off when the engine is started. If it does not, have the vehicle serviced by your dealer...