When You Are Ready To Leave After; Trailer Wiring Harness; Parking On A Hill; Maintenance When Trailer Towing - GMC 2000 Envoy Owner's Manual

When You Are Ready to Leave After

Parking on a Hill

1. Apply your regular brakes and hold the pedal down
while you:
D
Start your engine;
D
Shift into a gear; and
D
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.

Maintenance When Trailer Towing

Your vehicle will need service more often when you're
pulling a trailer. See the Maintenance Schedule 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.
4-56

Trailer Wiring Harness

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The heavy duty trailer wiring is an eight
assembly. The harness is stored under the vehicle, on the
driver's side corner frame rear crossmember. The harness is
fused in the engine compartment fuse block. See "Fuses and
Circuit Breakers" in the Index. The harness does not have a
connector and should be wired by a qualified electrical
technician. The technician can use the following color code
chart when connecting the wiring harness to your trailer.
D
Dark Blue: Use for electric trailer brakes or
auxiliary wiring.
D
Red: Use for battery charging; it connects to the
starter solenoid.
D
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Light Green: Back up lamps.
D
Brown: Taillamps and parking lamps.
D
Yellow: Left stoplamp and turn signal.
D
Dark Green: Right stoplamp and turn signal.
D
White: Ground wire.
D
Light Blue: Auxiliary stoplamp.
Securely attach the harness to the trailer, then tape or
strap it to your vehicle's frame rail. Be sure you leave it
loose enough so the wiring doesn't bend or break, but
not so loose that it drags on the ground. Store the
harness in its original place. Wrap the harness together
and tie it neatly so it won't be damaged.
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wire harness