2001 GMC YUKON Owner's Manual

6-66
Center Instrument Panel Utility Block
The center instrument panel utility block is located
underneath the instrument panel, to the left of the
steering column.Relay Name Usage
SEO Special Equipment Option
HTD ST Heated Seats
HDLNR Headliner
VANITY Headliner Wiring
TRAILER Trailer Brake Wiring
PWR ST Power Seats
YE9 Not Used
UPF Upfitter
PARK LAMP Parking Lamps (Relay)
FRT PRK EXPT Not Used
SPARE 2 Not Used
PUDDLE LP Not Used
SL RIDE Not Used
SPARE 3 Not Used
INADV PWR Interior Lights Feed (Relay)
CTSY LP Courtesy Lamps (Relay)
CEL PHONE Cellular Telephone Wiring

6-67
Underhood Electrical Center
The underhood electrical center is located on the
driver's side of the engine compartment near the battery.
Lift the cover for access to the fuse/relay block.You will see fuses to the top right of the fuse/relay
center block once you remove the cover. These are
spare fuses and can be used accordingly.
You can remove fuses with a fuse extractor. The fuse
extractor is located in the underhood electrical center.
To remove fuses if you don't have a fuse extractor, hold
the end of the fuse between your thumb and index finger
and pull straight out.
See ªEngine Compartment Overviewº in the Index for
more information.

6-68

6-69
Name Usage
STUD #1 Accessory Power/Trailer Wiring
Feed/Load Leveling
ABS Anti
-Lock Brakes
IGN A Ignition Switch
AIR A.I.R. System
RAP #1 Retained Accessory Power,
Power Mirrors, Power Door Locks,
Power Seat(s)
IGN B Ignition Switch
RAP #2 Retained Accessory Power/Rear
Power Windows, Sunroof, Radio
STUD #2 Accessory Power/Trailer Wiring
Brake Feed
TRL R TRN Right Turn Signal Trailer Wiring
TRL L TRN Left Turn Signal Trailer Wiring
IGN 1 Ignition, Fuel Controls
INJ B Ignition, Fuel Controls (Relay)
STARTER Starter (Relay)
PARK LP Parking LampsName Usage
FRT HVAC Climate Control System
STOP LP Exterior Lamps, Stoplamps
ECM I PCM
CHMSL Center High Mounted Stoplamp
VEH STOP Stoplamps, Cruise Control
TRL B/U Backup Lamps Trailer Wiring
INJ A Fuel Controls, Ignition
RR HVAC Rear HVAC
VEH B/U Vehicle Backup Lamps
ENG 1 Engine Controls, Canister Purge,
Fuel System
ETC Electronic Throttle Control
IGN E A/C Compressor Relay, Rear
Window Defogger, Daytime
Running Lamps, A.I.R. System
B/U LP Backup Lamps, Automatic
Transmission Shift Lock
Control System
ATC Automatic Transfer Case

6-70
Name Usage
RR DEFOG Rear Window Defogger,
Heated Mirrors (Relay)
RTD Autoride
(Real Time Damping)
RR PRK Right Rear Parking Lamps
ECM B PCM
F/PMP Fuel Pump (Relay)
O2 A Oxygen Sensors
O2 B Oxygen Sensors
LR PRK Left Rear Parking Lamps
RR DEFOG Rear Window Defogger,
Heated Mirrors
HDLP Headlamps (Relay)
TRL PRK Parking Lamps Trailer Wiring
PRIME Not Used
RT HDLP Right Headlamps
DRL Daytime Running Lamps (Relay)
HTD MIR Heated Mirrors
LT HDLP Left HeadlampsName Usage
A/C Air Conditioning
AUX PWR Cigarette Lighter, Auxiliary
Power Outlets
SEO 2 Special Equipment Option Power,
Power Seats, Aux Roof Mnt Lamp
SEO 1 Special Equipment Option Power,
Aux Roof Mnt Lamp,
Cell Phone, Onstar


DRL Daytime Running Lamps
A/C A/C (Relay)
FOG LP Fog Lamps
FOG LP Fog Lamps (Relay)
RADIO Audio System, Instrument Cluster,
Climate Control System
CIGAR Cigarette Lighter, Auxiliary
Power Outlets
RT TURN Right Turn Signals
BTSI Automatic Transmission Shift Lock
Control System
LT TURN Left Turn Signals

6-71
Name Usage
FR PRK Front Parking Lamps,
Sidemarker Lamps
W/W PMP Windshield Washer Pump
HORN Horn (Relay)
IGN C Ignition Switch, Fuel Pump,
PRND321 Display, Crank
RDO AMP Radio Amplifier
HAZ LP Exterior Lamps, Hazard Lamps
EXP LPS Not Used
HORN Horn
CTSY LP Interior Lamps
RR WPR Rear Wipers
TBC Body Control Module, Remote
Keyless Entry, HeadlampsReplacement Bulbs*
Low-Beam Headlamps2 9006
High
-Beam Headlamps2 9005
Daytime Running Lamps (DRL) 2 3157KX
Front Marker Lamp 2 194
Front Parking and Turn Lamp 2 3157A
Rear Marker Lamp,
Taillamp and Stop Lamp2 3157
Rear Turn Lamp 2 3157
Back
-up Lamp2 3157
* For replacement bulbs not listed here, please consult
your dealer.

6-72
Capacities and Specifications
Please refer to ªRecommended Fluids and Lubricantsº in the Index for more information. All capacities are
approximate. When adding see the refrigerant charge label under the hood for charge capacity information
and requirements.
Engine Type VIN Code Spark Plug Gap
VORTEC 4800 V8 V 0.060 inches (1.52 mm)
VORTEC 5300 V8 T 0.060 inches (1.52 mm)
VORTEC 6000 V8 U 0.060 inches (1.52 mm)
VORTEC 8100 V8 G 0.060 inches (1.52 mm)
Wheels and Tires
Model Description Torque
C/K 1500 6 bolts (14 mm)
140 lb
-ft (190 N´m)
C/K 2500 8 bolts (14 mm)
140 lb
-ft (190 N´m)
Tire Pressure See the Certification/Tire label on the rear edge of the driver's door
or the incomplete vehicle document in the cab.

6-73 Cooling System Capacity
After refill, the level must be rechecked. See ªCooling Systemº in the Index.
Engine Transmission Quantity
VORTEC 4800 V8 Automatic with front A/C 14.4 quarts (13.7 L)
VORTEC 4800 V8 Automatic with front and rear A/C 15.8 quarts (15.0 L)
VORTEC 5300 V8 Automatic with front A/C 14.4 quarts (13.7 L)
VORTEC 5300 V8* Automatic with front and rear A/C 15.8 quarts (15.0 L)
VORTEC 6000 V8 Automatic 15.8 quarts (15.0 L)
VORTEC 6000 V8** Automatic with engine oil cooler 15.4 quarts (14.6 L)
VORTEC 8100 V8 Automatic 20.7 quarts (19.6 L)
* Vehicles equipped with the optional air conditioner.
** Vehicles equipped with the optional engine oil cooler.
Add one liter if equipped with rear heating for all engines.