GMC Terrain: Lane Departure Warning (LDW) - Object Detection Systems - Driving and Operating - GMC Terrain Owner's ManualGMC Terrain: Lane Departure Warning (LDW)

For vehicles with this feature, read the entire section before using it.


The LDW system does not steer the vehicle and is an aid to help the vehicle stay in the driving lane. The LDW system may not:

○ Provide enough time to avoid a lane change collision.
○ Be loud enough to hear the warning beeps.
○ Work properly under bad weather conditions or if the windshield is dirty.
○ Detect lane markings and will not detect road edges.

○ Warn that the vehicle is crossing a lane marking if the system does not detect the lane marking.

LDW will operate even if it only detects lane markings on one side of the road. It will not warn if the vehicle departs the lane from the side where it has not detected a lane marker. The vehicle position must be maintained within the lane or, vehicle damage, injury, or death could occur. Even with LDW, always keep your attention on the road and maintain proper vehicle position within the lane. Always keep the windshield clean and do not use LDW in bad weather conditions.

When the vehicle crosses a detected lane marking, the LDW indicator will flash and three beeps will sound. LDW will not warn if the turn signal is on or if a sharp maneuver is made.

When the System Does Not Seem To Work Properly
The RVC system may not work properly or display a clear image if: ○ The RVC is turned off. See “Turning the Rear Vision Camera System On or Off” earlier in this section. ○ It is da ...

How the System Works
The LDW camera sensor is on the windshield ahead of the rearview mirror. To turn LDW on and off, press the LANE DEPART control on the steering wheel. The control indicator will light when LDW is ...

See also:

Cleaning Exterior Lamps/ Lenses and Emblems
Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses. Follow instructions under "Washing the Vehicle" later in this section. ...

Improving tire economy
• Maintain correct tire pressure. See the tire inflation table on page 291. • Drive smoothly: avoid fast starts, hard braking and tire screeching. • Tire wear increases with speed. • Co ...

Outside temperature indicator
Outside temperature indicator 1) U.S.-spec. models 2) Except U.S.-spec. models The outside temperature indicator shows the outside temperature in a range from −22 to 1228F (−30 ...