Maintenance When Trailer Towing - GMC 2004 Canyon Owner's Manual

4. Reapply the regular brakes. Then apply your
parking brake, and then shift into PARK (P), or
REVERSE (R) for a manual transmission. See
Parking Brake on page 2-29 for more information.
5. If you have a four-wheel-drive vehicle, be sure the
transfer case is in a drive gear and not in
NEUTRAL. See Four-Wheel Drive on page 2-26 for
more information.
6. Release the regular brakes.
When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
•
start your engine,
•
shift into a gear, and
•
release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
4-72

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.