GMC 2006 Canyon - Manual (Page 276)

Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See Scheduled Maintenance on
page 6-4 for more on this. Things that are especially
important in trailer operation are automatic transmission
fluid (don’t overfill), engine oil, axle lubricant, belt,
cooling system and brake system. Each of these is
covered in this manual, and the Index will help you find
them quickly. If you’re trailering, it’s a good idea to
review these sections before you start your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Trailer Wiring Harness
Your vehicle may be equipped with a four-pin trailer
towing harness. This harness has a four-pin trailer
connector that is attached to a bracket on the hitch
platform. The four-wire harness contains the following
trailer circuits:
• Yellow: Left Stop/Turn Signal
• Green: Right Stop/Turn Signal
• Brown: Taillamps/Park lamps
• White: Ground
Trailer Recommendations
You must subtract your hitch load from the CWR for your
vehicle. Weigh your vehicle with your trailer attached,
so that you won’t go over the GVWR or the GAWR.
You’ll get the best performance if you spread out the
weight of your load the right way, and if you choose the
correct hitch and trailer brakes.
For more information, see Towing a Trailer on page 4-56
later in this section.
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