2018 GMC Terrain Wiper Sizes & Bulb Sizes
The short answer
The 2018 GMC Terrain takes 24" driver and 18" passenger wiper blades (rear 12").
Wiper blade sizes
Driver side
24" · OEM 23368186 Shop on Amazon
Passenger side
18" · OEM 23353587 Shop on Amazon
Rear
12" · OEM 84215609 Shop on Amazon
Bulb sizes
Fog light
H11 Shop on Amazon
Rear turn signal
7440 Shop on Amazon
Brake light
7440 Shop on Amazon
Reverse light
921 Shop on Amazon
License plate
W5W Shop on Amazon
Wheel specs and lug torque
Bolt pattern
5x115 mm (5x4.53")
Center bore
70.3 mm
Lug thread
M12x1.5 Shop on Amazon
Lug nut torque
100 ft-lbs (136 Nm)
Key fob, battery and sensors
Key fob battery
CR2032 Shop on Amazon
Relearn
tool
Roof rack and roof load
Roof load limit
220 lb (100 kg), evenly spread, while driving
Dimensions, weight and fuel
Fuel
Gasoline
Octane
87 (regular)
Fuel tank
14.8 gal (56 L)
Worth knowing about the 2018 Terrain
- Wipers. Some blade makers list a 13-inch rear blade where the manual gives 30 cm, so match the rear by the GM part number.
- Torque. Tighten lug nuts to 100 ft-lbs in a star pattern with a torque wrench, and re-check after the first 50 miles. This figure is from the owner's manual; an impact gun will overshoot it.
- TPMS. New sensors on this car need a relearn (tool); they will not pair on their own by driving.
- Key fob. The smart key came in 3-, 4- and 5-button versions depending on remote start and power liftgate.
- Roof load. The 220 lb roof limit is the dynamic figure for driving and includes the rack itself. It is not a limit for a rooftop tent when parked; the manual gives no static figure.
- Fuel. The manual recommends 93 octane premium for the 2.0L turbo engine.