GMC 2007 Acadia Owner's Manual page 372

If You Do Decide to Pull a Trailer
If you do, here are some important points:
•
There are many different laws, including speed
limit restrictions, having to do with trailering.
Make sure your rig will be legal, not only where
you live but also where you'll be driving.
A good source for this information can be state
or provincial police.
•
Consider using a sway control. You can ask a
hitch dealer/retailer about sway controls.
•
Don't tow a trailer at all during the first
500 miles (805 km) your new vehicle is driven.
Your engine, axle or other parts could be
damaged.
•
Then, during the first 500 miles (805 km) that
you tow a trailer, don't drive over 50 mph
(80 km/h) and don't make starts at full throttle.
This helps your engine and other parts of
your vehicle wear in at the heavier loads.
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•
Obey speed limit restrictions when towing a
trailer. Don't drive faster than the maximum
posted speed for trailers, or no more than
55 mph (90 km/h), to save wear on your
vehicle's parts.
•
You can tow in DRIVE (D). You may want to
shift the transmission to a lower gear selection
if the transmission shifts too often (e.g., under
heavy loads and/or hilly conditions). See
"Tow/Haul Mode" later in this section.
Three important considerations have to do with
weight:
•
the weight of the trailer
•
the weight of the trailer tongue
•
and the total weight on your vehicle's tires