GMC Terrain: Rear Cross Traffic Alert (RCTA) / Turning the Features On or Off
GMC Terrain 2018-2026 Owners Manual / Driving and Operating / Driver Assistance Systems / Rear Cross Traffic Alert (RCTA) / Turning the Features On or Off
The 
button on the center
console is used to turn on or off the
Front and Rear Park Assist and the
Rear Cross Traffic Alert (RCTA).
The indicator light in the button
comes on when the features are on
and turns off when the features
have been disabled.
Turn off Park Assist and RCTA when towing a trailer.
RCTA can be turned off through “Collision/Detection Systems” under Vehicle Personalization.
Rear Cross Traffic Alert (RCTA)
If equipped, when the vehicle is
shifted into R (Reverse), RCTA
displays a red warning triangle with
a left or right pointing arrow to warn
of traffic coming from the left or
right...
Automatic Parking Assist (APA)
If equipped, APA searches for and
steers the vehicle into parallel and
perpendicular parking spots. When
using APA, you must still shift gears,
and control the brakes and
accelerator...
Other information:
GMC Terrain 2018-2026 Owners Manual: Taillamps
To replace one of these lamps: Open the liftgate. See Liftgate. Remove the two screw caps and two screws from the taillamp assembly. Pull the taillamp assembly out of the vehicle body. Disconnect the lamp wiring harness. Turn the bulb socket counterclockwise and pull it out...
GMC Terrain 2018-2026 Owners Manual: Brake Fluid
The brake master cylinder reservoir is filled with GM approved DOT 3 brake fluid as indicated on the reservoir cap. See Engine Compartment Overview for the location of the reservoir. Checking Brake Fluid With the vehicle in P (Park) on a level surface, the brake fluid level should be between the minimum and maximum marks on the brake fluid reservoir...
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