auxiliary battery GMC ENVOY 2000 Owners Manual

2-55
If the air inflator system does not turn on, the fuse may
be blown or installed incorrectly. See ªFuses and Circuit
Breakersº in the Index or see your dealer for service.
Your air inflator will automatically shut off after about
10 minutes. To reset, press the ON switch again.
Don't run your air inflator for longer than 30 minutes
at one time. If you do, you may damage the system.
After 30 minutes, wait at least 10 minutes before
restarting the air inflator.
To turn off the air inflator, press OFF and detach the
hose, first from the inflated object, then from the outlet.
Replace the protective cap. Place the inflator kit tools in
the pouch and store it properly.
To replace the cover, line up the tabs at the back of the
cover and put it in place.
Accessory Power Outlets
With the accessory power outlets, you can plug in
auxiliary electrical equipment. There are four accessory
power outlets located throughout the vehicle. Two are
near the lower center part of the instrument panel,
one is located in the lower rear of the center console
and the other is located in the rear of the vehicle in the
air inflator compartment. Follow the proper installation
instructions that are included with any electrical
equipment you install.These circuits are protected by a fuse and have maximum
current levels.
NOTICE:
When using the accessory power outlets, maximum
electrical load must not exceed 20 amps. Always
turn off any electrical equipment when not in use.
Leaving electrical equipment on for extended
periods will drain your battery.
Cellular Telephone (Option)
Your vehicle has been prewired for dealer installation
of a dual
-mode (analog/digital) cellular telephone.
A fixed mobile or a portable hand
-held system is
available. Voice activation and hands
-free operation
are standard features. For more information, contact
your GMC dealer. A user's guide is provided with
the telephone.
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4-56 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.
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.
Trailer Wiring Harness
The heavy-duty trailer wiring is an eight-wire harness
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 ªFuses and
Circuit Breakersº 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.

Dark Blue: Use for electric trailer brakes or
auxiliary wiring.

Red: Use for battery charging; it connects to the
starter solenoid.

Light Green: Back
-up lamps.

Brown: Taillamps and parking lamps.

Yellow: Left stoplamp and turn signal.

Dark Green: Right stoplamp and turn signal.

White: Ground wire.

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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6-57
Fuse/Circuit
BreakerUsage
4 Gages, Body Control Module,
Instrument Panel Cluster
5 Parking Lamps, Power Window
Switch, Body Control Module,
Ashtray Lamp
6 Steering Wheel Audio
Control Illumination
7 Headlamp Switch, Body Control
Module, Headlamp Relay
8 Courtesy Lamps, Battery
Run
-Down Protection
9 Not Used
10 Turn Signal
11 Cluster, Engine Control Module
12 Interior LightsFuse/Circuit
BreakerUsage
13 Auxiliary Power
14 Power Locks Motor
15 4WD Switch, Engine Controls
(VCM, PCM, Transmission)
16 Air Bag
17 Front Wiper
18 Steering Wheel Audio Controls
19 Radio, Battery
20 Amplifier
21 HVAC I (Automatic),
HVAC Sensors (Automatic)
22 Anti
-Lock Brakes
23 Rear Wiper
24 Radio, Ignition
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