Safety chains

Always connect the trailer’s safety chains to the hook retainers on the vehicle. To connect the trailer’s safety chains, cross the chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency gives to you.
Do not attach safety chains to the bumper.
See also:
Guarding against exhaust fumes
WARNING: If you smell exhaust fumes inside your vehicle, have
your dealer inspect your vehicle immediately. Do not drive if you
smell exhaust fumes.
Carbon monoxide is present in exhaust fumes. ...
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer’s
specifications. The trailer brakes must meet local and Federal ...
System check and vehicle feature customization
Press the SETUP button repeatedly
to cycle the message center through
the following features:
RESET FOR SYSTEM CHECK
When this message appears, press
the RESET button and the message
...
