Page 243 of 390

Trailer Brakes
If your trailer weighs more than 1,000 lbs (450 kg)
loaded, then it needs its own brakes — and they must
be adequate. Be sure to read and follow the instructions
for the trailer brakes so you’ll be able to install, adjust
and maintain them properly.
Your trailer’s brake system can tap into the vehicle’s
hydraulic brake system only if:
•The trailer parts can withstand 3,000 psi
(20 650 kPa) of pressure.
•The trailer’s brake system will use less than
0.02 cubic inch (0.3 cc) of fluid from your vehicle’s
master cylinder. Otherwise, both braking systems
won’t work well. You could even lose your brakes.
If everything checks out this far, then make the brake
fluid tap at the port on the master cylinder that
sends fluid to the rear brakes. But don’t use copper
tubing for this. If you do, it will bend and finally break off.
Use steel brake tubing.
Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you’ll want to get
to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch, parts and
attachments, safety chains, electrical connector, lamps,
tires and mirror adjustment. If the trailer has electric
brakes, start your vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure
the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.
4-43
Page 336 of 390
Fuses Usage
03 Rear Window Defogger
04 Truck Body Controller
05 Rear Window Defogger
06 Driver Seat Module
07 Truck Body Controller
09 Blank
10 Driver’s Door Module, Power Mirrors
11 Amplifier
12 Blank
13 Daytime Running Lamps (DRL)
14 Driver’s Side Rear Parking Lamp
15 Auxiliary Power 2
16 Center High-Mounted Stop Lamp
17Passenger’s Side Rear
Parking Lamp
19 Blank
20 Blank
21 Locks
22 Blank
23 Blank
25 Blank
26 Blank
27 HomeLink
®System
28 Roof Door Module
5-88
Page 337 of 390
Fuses Usage
29 Transmission Control Module
31 Truck Body Controller
32 Remote Keyless Entry (RKE)
33 Windshield Wipers
34 Stoplamps
35 Blank
36Climate Control System, Driver’s
Door Unlock
37 Front Parking Lamps
38 Driver’s Side Turn Signal
39 Climate Control System
40 Truck Body Controller
41 Radio
42 Trailer Parking Lamps
43 Passenger’s Side Turn Signal
44 Blank
46 Accessory Power Outlets
47 IgnitionFuses Usage
48 Blank
49 Blank
50 Truck Body Controller, Ignition
51 Brakes
52 Blank
Relays Usage
18 Locks
24 Unlock
30 Parking Lamps
45Rear Window Defogger, Outside
Power Heated Mirrors
Circuit
BreakersUsage
01 Roof & Door Module
02 Roof Pump
08 Power Seats
5-89
Page 386 of 390

Mirrors
Automatic Dimming Rearview Mirror with
Universal Home Remote...........................2-27
Manual Rearview Mirror................................2-27
Outside Automatic Dimming Heated Mirror......2-29
Outside Convex Mirror.................................2-29
Outside Power Heated Mirrors.......................2-28
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-15
Normal Maintenance Replacement Parts............6-14
O
Odometer......................................................3-26
Odometer, Trip...............................................3-26
Off-Road Recovery..........................................4-13
Oil
Change Engine Oil Light...............................3-37
Engine.......................................................5-13
Pressure Gage............................................3-36
Oil, Engine Oil Life System..............................5-16
Older Children, Restraints................................1-20
Online Owner Center........................................ 7-3
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-23Outside
Automatic Dimming Heated Mirror..................2-29
Convex Mirror.............................................2-29
Power Heated Mirrors..................................2-28
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Parade Dimming.............................................3-18
Park (P)
Shifting Into................................................2-23
Shifting Out of............................................2-24
Parking
Brake........................................................2-23
Over Things That Burn.................................2-25
Parking Your Vehicle.......................................2-25
Passenger Position, Safety Belts.......................1-19
Passing.........................................................4-13
Passlock
®......................................................2-15
Perimeter Lighting...........................................3-18
Power
Accessory Outlet(s)......................................3-19
Door Locks.................................................. 2-9
Electrical System.........................................5-86
Reduced Engine Light..................................3-38
Retained Accessory (RAP)............................2-17
Seat............................................................ 1-2
8
Page 387 of 390

Power (cont.)
Steering Fluid.............................................5-31
Windows....................................................2-12
Programmable Automatic Door Locks.................2-10
Q
Questions and Answers About Safety Belts.........1-11
R
Radios..........................................................3-58
Care of Your CD Player...............................3-86
Care of Your CDs........................................3-86
Radio with CD............................................3-60
Radio with Six-Disc CD................................3-72
Setting the Time..........................................3-60
Theft-Deterrent............................................3-84
Understanding Reception..............................3-85
Raising the Convertible Top..............................2-48
Rear Axle......................................................5-42
Rearview Mirrors.............................................2-27
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-35
Reduced Engine Power Light............................3-38
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Replacement Bulbs.........................................5-48Reporting Safety Defects
Canadian Government..................................7-14
General Motors...........................................7-14
United States Government............................7-13
Restraint System Check
Checking the Restraint Systems....................1-52
Replacing Restraint System Parts
After a Crash..........................................1-53
Retained Accessory Power (RAP)......................2-17
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-28
Running the Engine While Parked.....................2-26
S
Safety Belt
Reminder Light............................................3-27
Safety Belts
Care of......................................................5-79
Driver Position............................................1-12
How to Wear Safety Belts Properly................1-12
Passenger Position......................................1-19
Questions and Answers About Safety Belts.....1-11
Safety Belt Extender....................................1-19
Safety Belt Use During Pregnancy.................1-18
Safety Belts Are for Everyone......................... 1-6
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
9
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