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Fuses Usage
REAR PRK
LAMP2Driver’s Side Rear Taillamp,
Passenger Side Airbag Indicator
Lighting, Instrument Panel Dimming
Power (2WD/4WD switch lighting)
CLSTR Cluster
TRN/HAZRD
FRTTurn/Hazard/Courtesy/
Cargo Lamps/Mirrors
TCCM Transfer Case Control Module
HORN Horn
TBC Truck Body Controller
IGN TRNSD Ignition Transducers
RDO Radio
ONSTAR OnStar
®
CNSTR VENT Fuel Canister Vent Solenoid
PCM B Powertrain Control Module (PCM) B
Relays Usage
DRL Daylight Running Lamps
BEAM SEL Beam Selection
IGN 3 HVACIgnition 3, Climate Control,
Climate Control Head Fuse,
Power Seat Fuse
RAPRetained Accessory Power
(Power Window Fuse,
Wiper/Washer Switch Fuse),
Sunroof Fuse
Relays Usage
PRK/LAMPFront Parking Lamp Fuse,
Rear Parking Lamps
HDLP Headlamps
FOG/LAMP Fog Lamps (If Equipped)
FUEL/PUMP Fuel Pump, Fuel Pump Fuse
A/C CMPRSR Air Conditioning Compressor
RUN/CRNKRun/Crank, Airbag System Fuse,
Cruise Control Fuse, Ignition Fuse,
Back-Up Lamps, ABS Fuse,
Front Axle, PCM-1, Injectors Fuse,
Transmission Fuse, ERLS
PWR/TRNPowertrain, Electronic Throttle
Control Fuse, Oxygen Sensor Fuse
HORN Horn
WPR 2 Wiper 2 (High/Low)
WPR Wipers (On/Off)
STRTR Starter Relay (PCM Relay)
Miscellaneous Usage
WPR Diode — Wiper
A/C CLTCH Diode — Air Conditioning, Clutch
MEGA FUSE Mega Fuse
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Page 479 of 496

Event Data Recorders
Some information about your vehicle’s performance
and how it is driven may be recorded on various
modules if a crash occurs. Some people refer to
these modules asevent data recorders (EDRs).
These modules may record several seconds of
pre-crash and crash data, such as data related to
engine speed, brake application, throttle
position, vehicle speed, yaw rate, steering
wheel angle, lateral acceleration, safety belt
usage, airbag readiness, airbag performance
andthe severity of the collision.Unlike the
ight data recorders on airplanes, these modules
do not record sounds or conversations.To retrieve this data, special equipment and
access to the vehicle or the module that stores
the data are required. Certain data may also
be sent to or retrieved by OnStar®(see below).
GM will not access this information or share it
with others except: with the consent of the
vehicle owner or, if the vehicle is leased, with the
consent of the lessee; in response to an official
request of police or similar government office;
as part of GM’s defense of litigation through
the discovery process; or, as required by law.
Data that GM collects or receives may also
be used for GM research needs or may be
made available to others for research purposes,
where a need is shown and the data is not tied
to a speci c vehicle or vehicle owner.
Others may be able to retrieve this data if they
have access to the vehicle and have the special
equipment necessary to download the data.
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Page 490 of 496

N
Navigation System, Privacy......................... 480
New Vehicle Break-In.................................. 118
Normal Maintenance
Replacement Parts................................... 454
O
Odometer.................................................... 183
Odometer, Trip............................................ 183
Off-Road Driving.......................................... 260
Off-Road Recovery...................................... 257
Oil
Engine..................................................... 333
Pressure Light.......................................... 195
Oil, Engine Oil Life System......................... 336
Older Children, Restraints............................. 44
Online Owner Center................................... 463
OnStar, Privacy........................................... 480
OnStar
®System, see OnStar®Manual........ 149
Other Warning Devices................................ 162
Outlet Adjustment........................................ 180Outlets
Accessory Power..................................... 176
Outside
Convex Mirror.......................................... 148
Manual Mirrors......................................... 147
Power Mirrors.......................................... 148
Owner Checks and Services....................... 447
Owners, Canadian.......................................... 3
P
Paint, Damage............................................ 429
Park (P)
Shifting Into............................................. 135
Shifting Out of......................................... 137
Parking
Brake....................................................... 133
Over Things That Burn............................ 138
Parking Your Vehicle................................... 137
Passenger Airbag Status Indicator............... 186
Passenger Sensing System........................... 88
Passing....................................................... 257
490