Turn Signals When Towing a Trailer
The turn signal indicators on the instrument panel flash whenever signaling a turn or lane change.
Properly hooked up, the trailer lamps also flash, telling other drivers the vehicle is turning, changing lanes or stopping.
When towing a trailer, the arrows on the instrument panel flash for turns even if the bulbs on the trailer are burned out. Check occasionally to be sure the trailer bulbs are still working.
See also:
Battery
The battery supplies power to start the engine and operate any additional electrical accessories.
• To avoid break-down or failure to start the vehicle, maintain a battery with full cranking power. ...
Cargo & Towing
The Yukon Denali is a spacious three-row SUV for people, but that's it. If
there are six people and no cargo, the Yukon is a terrific place to be. If you
have a lot of cargo — you know, like lug ...
Add-On Electrical Equipment
Notice: Do not add anything electrical to the vehicle unless you check with your
dealer first. Some electrical equipment can damage the vehicle and the damage would
not be covered by the vehicle&# ...