GMC 2003 Sierra - Manual (Page 347)

Towing a Trailer
A CAUTION;
ir you don't use the correct equipment and
drive properly, you can lose conlrol when you
pull a trailer. For example, if the Irailer is too
heavy, the braltes may not work well “ or even
at all. You and your paaaenqers could be
seriously Injured. Pull a trailer only if you have
followed all the steps in this section. Ask your
dealer for advice and information about towing
a trailer with your vehicle.
Notice: Pulling a trailer improperly can damage
your vehicfe and result Fn costly repairs not covered
by your warranty. To pull a trailer correctly^ follow
the advice in this part, end see your deafer for
important information about towing a tralier with
your vehicle. Additional rear axle maintenance
is required for
я vehicle used to tow a trailer. See
“Scheduled Maintenance Services" in the Index.
To icferitify the vehicle trailering capacity nf your vehicle,
you should read the laformalion in
W eight of the
Traiter \hü\ appears 1д[ег in this section.
If yours wa.s built witfi traiterng options, as many are,
it's ready for heavier trailers. Bui (lallerlrig Is different
lhan just driving ycuf vehicle by itgell. ТгаИеппд mears
changes in handling, durability and fuel economy.
Successful, safe irailering lakes oonsct equipment, and
it has to be used praperiy.
That's Ihe rea&on for this part In It are гткапу time-tesled,
imporlani trallering tips and safely rules. Many of
these are important for your safely and that of your
passengers. So please read this seclion carefully helore
you pull a trailer.
If You Dp Decide To Pull A Trailer
If you do, here are seme tmportani points:
\ There are many different laws, including speed fimft
restncliong, having to do with traclering. Make sure
your rig will be legal, no! only where you live
but also where you'll be driving, A good source for
this information can ba state or provincial police.
% Consider using a sway coolnol ii your trailer will
weigh less than 5,000 lbs. 270 kg) for light duty
vehicles, or less than 7,500 tbs. (3 405 kg} for heavy
duly vehicles. You should always use a sway control
if your irai 1er will weigh more lhan these limits. You
can ask a hitch dealer about sway cgnlrols*
4-КS