GMC 2007 Acadia Owner's Manual page 379

Passing
You'll need more passing distance up ahead when
you're towing a trailer. And, because you're a
good deal longer, you'll need to go much farther
beyond the passed vehicle before you can
return to your lane.
Backing Up
Hold the bottom of the steering wheel with
one hand. Then, to move the trailer to the left,
just move that hand to the left. To move the trailer
to the right, move your hand to the right. Always
back up slowly and, if possible, have someone
guide you.
Making Turns
Notice: Making very sharp turns while
trailering could cause the trailer to come in
contact with the vehicle. Your vehicle could
be damaged. Avoid making very sharp turns
while trailering.
When you're turning with a trailer, make wider
turns than normal. Do this so your trailer
won't strike soft shoulders, curbs, road signs,
trees or other objects. Avoid jerky or sudden
maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal flasher and/or extra wiring.
Check with your dealer/retailer. The arrows
on your instrument panel will flash whenever you
signal a turn or lane change. Properly hooked
up, the trailer lamps will also flash, telling other
drivers you're about to turn, change lanes or stop.
When towing a trailer, the arrows on your
instrument panel will flash for turns even if the
bulbs on the trailer are burned out. Thus, you may
think drivers behind you are seeing your signal
when they are not. It's important to check
occasionally to be sure the trailer bulbs are
still working.
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