Notice:If the jumper cables are connected or
removed in the wrong order, electrical shorting may
occur and damage the vehicle. The repairs would
not be covered by the vehicle warranty. Always
connect and remove the jumper cables in the
correct order, making sure that the cables do
not touch each other or other metal.
Jumper Cable Removal
A. Heavy, Unpainted Metal Engine Part or Remote Negative (−) Terminal
B. Good Battery or Remote Positive (+) and Remote Negative (−) Terminals
C. Dead Battery or Remote Positive (+) Terminal To disconnect the jumper cables from both vehicles do
the following:
1. Disconnect the black negative (−) cable from the vehicle that had the bad battery.
2. Disconnect the black negative (−) cable from the vehicle with the good battery.
3. Disconnect the red positive (+) cable from the vehicle with the good battery.
4. Disconnect the red positive (+) cable from the other vehicle.
5. Return the positive (+) terminal cover, to its original position.
Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle fluid
unless you suspect there is a leak or you hear an
unusual noise. A fluid loss could indicate a problem.
Have it inspected and repaired.
All axle assemblies are filled by volume of fluid during
production. They are not filled to reach a certain level.
When checking the fluid level on any axle, variations
in the readings can be caused by factory fill differences
between the minimum and the maximum fluid volume.
Also, if a vehicle has just been driven before checking
the fluid level, it may appear lower than normal because
6-48
Vehicle Identification
Vehicle Identification Number (VIN)
This legal identifier is in the front corner of the
instrument panel, on the driver side. It can be seen
through the windshield from outside. The VIN also
appears on the Certification/Tire and Service Parts
labels and certificates of title and registration.
Engine Identification
The eighth character in the VIN is the engine code. This
code identifies the vehicle's engine, specifications, and
replacement parts. See“Engine Specifications”under
Capacities and Specifications
on page 6‑126for the
vehicle's engine code.
Service Parts Identification Label
This label, on the inside of the glove box, has the
following information:
.Vehicle Identification Number (VIN)
.Model designation
.Paint information
.Production options and special equipment
Do not remove this label from the vehicle.
Electrical System
Add-On Electrical Equipment
Notice: Do not add anything electrical to the vehicle
unless you check with your dealer/retailer first.
Some electrical equipment can damage the vehicle
and the damage would not be covered by the
vehicle's warranty. Some add-on electrical
equipment can keep other components from
working as they should.
Add-on equipment can drain the vehicle battery, even if
the vehicle is not operating.
6-117
FusesUsage
7 Front Washer
8 Oxygen Sensor
9 Antilock Brakes System 2
10 Trailer Back-up Lamps 11 Driver Side Low-Beam Headlamp
12 Engine Control Module (Battery)
13 Fuel Injectors, Ignition
Coils (Right Side)
14 Transmission Control
Module (Battery)
15 Vehicle Back-up Lamps
16 Passenger Side Low-Beam Headlamp
17 Air Conditioning Compressor
18 Oxygen Sensors
19 Transmission Controls (Ignition)
20 Fuel Pump
21 Fuel System Control Module
22 Not Used
Fuses Usage
23 Not Used
24Fuel Injectors, Ignition
Coils (Left Side)
25 Trailer Park Lamps
26 Driver Side Park Lamps
27 Passenger Side Park Lamps
28 Fog Lamps
29 Horn
30 Passenger Side High-Beam
Headlamp
31 Daytime Running Lamps (DRL)
32 Driver Side High-Beam Headlamp
33 Daytime Running Lights 2
34 Sunroof
35 Key Ignition System, Theft
Deterrent System
36 Windshield Wiper
37 SEO B2 Upfitter Usage (Battery)
6-123
FusesUsage
38 Electric Adjustable Pedals
39 Climate Controls (Battery)
40 Airbag System (Ignition)
41 Amplifier
42 Audio System
43Miscellaneous (Ignition), Cruise
Control
44 Not Used
45 Airbag System (Battery)
46 Instrument Panel Cluster
47 Power Take-Off
48 Auxiliary Climate Control (Ignition)
49 Center High-Mounted
Stoplamp (CHMSL)
50 Rear Defogger
Fuses Usage
51 Heated Mirrors
52 SEO B1 Upfitter Usage (Battery)
53Cigarette Lighter, Auxiliary
Power Outlet
54 SEO Upfitter Usage
55 Climate Controls (Ignition)
56 Engine Control Module, Secondary
Fuel Pump (Ignition)
J-Case Fuses
Usage
57 Cooling Fan 1
58 Not Used
59 Heavy Duty Antilock Brake System
60 Cooling Fan 2
61 Antilock Brake System 1
6-124
J-Case FusesUsage
62 Starter
63 Stud 2 (Trailer Brakes)
64 Left Bussed Electrical Center 1
65 Not Used
66 Heated Windshield Washer System
67 Transfer Case
68Stud 1 (Trailer Connector Battery
Power) (Optional - 40A Fuse
Required)
69 Mid-Bussed Electrical Center 1
70 Climate Control Blower
71 Not Used
72 Left Bussed Electrical Center 2
Relays Usage
FAN HI Cooling Fan High Speed
FAN LO Cooling Fan Low Speed
FAN CNTRL Cooling Fan Control
HDLP LO/HID Low-Beam Headlamp
FOG LAMP Front Fog Lamps
A/C CMPRSR Air Conditioning Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL PMP Fuel Pump
PRK LAMP Parking Lamps
REAR DEFOG Rear Defogger
RUN/CRANK Switched Power
6-125
Services Provided
.Emergency Fuel Delivery:Delivery of enough
fuel for the vehicle to get to the nearest service
station.
.Lock‐Out Service: Service is provided to unlock
the vehicle if you are locked out. A remote unlock
may be available if you have OnStar
®. For security
reasons, the driver must present identification
before this service is given.
.Emergency Tow From a Public Road or
Highway: Tow to the nearest GMC dealer for
warranty service, or if the vehicle was in a crash
and cannot be driven. Assistance is also given
when the vehicle is stuck in the sand, mud,
or snow.
.Flat Tire Change: Service is provided to change
a flat tire with the spare tire. The spare tire,
if equipped, must be in good condition and
properly inflated. It is the owner's responsibility for
the repair or replacement of the tire if it is not
covered by the warranty.
.Battery Jump Start: Service is provided to jump
start a dead battery.
.Trip Routing Service: Detailed maps of North
America are provided when requested either with
the most direct route or the most scenic route.
Additional travel information is also available.
Allow three weeks for delivery.
.Trip Interruption Benefits and Assistance:
If your trip is interrupted due to a warranty failure,
incidental expenses may be reimbursed during the
5 years/100,000 miles (160 000 km) Powertrain
warranty period. Items considered are hotel,
meals, and rental car.
Services Not Included in Roadside
Assistance
.Impound towing caused by violation of any laws.
.Legal fines.
.Mounting, dismounting or changing of snow tires,
chains, or other traction devices.
.Towing or services for vehicles driven on a
non-public road or highway.
8-9
Appearance Care (cont.)Sheet Metal Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-116
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-116
Underbody Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 6-116
Washing Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-113
Weatherstrips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-113
Windshield and Wiper Blades . . . . . . . . . . . . . . . . . . . . 6-114
Ashtray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . .8-7
Audio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84 Audio Steering Wheel Controls . . . . . . . . . . . . . . . . . .4-145
Navigation/Radio System, see NavigationManual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-123
Radio Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-148
Rear Seat (RSA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-143
Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84
Theft-Deterrent Feature . . . . . . . . . . . . . . . . . . . . . . . . . .4-145
XM™ Satellite Radio Antenna System . . . . . . . . . . .4-149
Audio System(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-87
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 4-12
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23, 6-26
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Auxiliary Roof Mounted Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-48B
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43 Electric Power Management . . . . . . . . . . . . . . . . . . . . . . 4-16
Run-Down Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Belt Routing, Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Bluetooth
®. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-123
Brake
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Pedal and Adjustable Throttle . . . . . . . . . . . . . . . . . . . . 3-26
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-39 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50
System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Braking in Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-62 Center High-Mounted Stoplamp (CHMSL) andCargo Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-58
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57
i - 2