2003 CHEVROLET TAHOE Owners Manual

Underhood Fuse BlockThe underhood fuse block in the engine compartment
on the driver's side of the vehicle near the battery.
Lift the cover for access to the fuse/relay block.
To remove fuses, hold the end of the fuse between your
thumb and index ®nger and pull straight out.
See
Engine Compartment Overview on page 5-14for
more information on its location.
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5-114

*1Ð Gasoline Engine and Fuel Injection Rail #2.
*2Ð Gasoline Engine and Fuel Injection Rail #1.
*3Ð Gasoline Engine; Oxygen Sensors.
*4Ð Gasoline Engine; Oxygen Sensors.
*5Ð PCM Ignition
Fuses Usage
GLOW PLUG Not Used
CUST FEED Gasoline Accessory Power
STUD #1Auxiliary Power (Single
Battery and Diesels
Only)/Dual Battery (TP2) Do
not install fuse.
MBECMid Bussed Electrical Center
Power Feed, Front Seats,
Right Doors
BLOWER Front Climate Control Fan
LBECLeft Bussed Electrical Center,
Door Modules, Door Locks,
Auxiliary Power OutletÐRear
Cargo Area and Instrument
Panel
Fuses Usage
STUD 2Accessory Power/Trailer
Wiring Brake Feed
ABS Anti-Lock Brakes
VSES/ECAS Vehicle Stability
IGN A Ignition Power
IGN B Ignition Power
LBEC 1Left Bussed Electrical Center,
Left Doors, Truck Body
Controller, Flasher Module
TRL PARK Parking Lamps Trailer Wiring
RR PARKRight Rear Parking and
Sidemarker Lamps
LR PARKLeft Rear Parking and
Sidemarker Lamps
PARK LP Parking Lamps Relay
STARTER Starter Relay
INTPARK Interior Lamps
STOP LP Stoplamps
TBC BATTTruck Body Controller
Battery Feed
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Fuses Usage
SUNROOF Sunroof
SEO B2 Off-Road Lamps
4WSVent Solenoid
Canister/Quadrasteer Module
Power
RR HVAC Rear Climate Control
AUX PWRAuxiliary Power Outlet Ð
Console
IGN 1 Ignition Relay
PCM 1 Powertrain Control Module
ETC/ECMElectronic Throttle Control,
Electronic Brake Controller
IGN EInstrument Panel Cluster, Air
Conditioning Relay, Turn
Signal/Hazard Switch, Starter
Relay
RTD Ride Control
TRL B/U Backup Lamps Trailer Wiring
PCM BPowertrain Control Module,
Fuel Pump
F/PMP Fuel Pump (Relay)Fuses Usage
B/U LPBack-up Lamps, Automatic
Transmission Shift Lock
Control System
RR DEFOG Rear Window Defogger
HDLP-HI Headlamp High Beam Relay
PRIME Not Used
SIRSupplemental In¯atable
Restraint System
FRT PARKFront Parking Lamps,
Sidemarker Lamps
DRLDaytime Running Lamps
(Relay)
SEO IGN Rear Defog Relay
TBC IGN1 Truck Body Controller Ignition
HI HDLP-LT High Beam Headlamp-Left
LH HID Not Used
DRL Daytime Running Lamps
IPC/DICInstrument Panel
Cluster/Driver Information
Center
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Fuses Usage
HVAC/ECAS Climate Control Controller
CIG LTR Cigarette Lighter
HI HDLP-RT High Beam Headlamp-Right
HDLP-LOW Headlamp Low Beam Relay
A/C COMP Air Conditioning Compressor
A/C COMPAir Conditioning Compressor
Relay
RR WPR Rear Wiper/Washer
RADIO Audio System
SEO B1Mid Bussed Electrical Center,
HomeLink, Rear Heated
Seats
LO HDLP-LT Headlamp Low Beam-Left
BTSIBrake Transmission Shift
Interlock System
CRANK Starting System
LO HDLP-RT Headlamp Low Beam-RightFuses Usage
FOG LP Fog Lamp Relay
FOG LP Fog Lamps
HORN Horn Fuse
HORN Horn Relay
W/S WASHWindshield and Rear Window
Washer Pump Relay
W/S WASHWindshield and Rear Window
Washer Pump
INFOOnStar/Rear Seat
Entertainment
RADIO AMP Radio Ampli®er
RH HID Not Used
EAP Electric Adjustable Pedals
TREC All-Wheel Drive Module
SBA Supplemental Brake Assist
5-117

Capacities and Speci®cations
Please refer toPart D: Recommended Fluids and Lubricants on page 6-18for more information. All capacities are
approximate.
Capacities and Speci®cations
Engine Type VIN Code Spark Plug Gap
VORTECŸ 4800 V8 V8 V 0.060 inches (1.52 mm)
VORTECŸ 5300 V8 V8 T 0.060 inches (1.52 mm)
VORTECŸ 5300 V8 V8 Z 0.060 inches (1.52 mm)
VORTECŸ 6000 V8 V8 U 0.060 inches (1.52 mm)
VORTECŸ 8100 V8 V8 G 0.060 inches (1.52 mm)
Wheels and Tires
Model Description Torque
C/K 1500 6 bolts (14 mm) 140 lb ft (190Y)
C/K 2500 8 bolts (14 mm) 140 lb ft (190Y)
Tire PressureSee the Certi®cation/Tire label on the rear edge of the driver's door or the
incomplete vehicle document in the cab.
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After re®ll, the level must be rechecked. SeeCooling System on page 5-36.
Cooling System Capacity
ApplicationCapacities
English Metric
Cooling System
VORTECŸ 4800 V8 Automatic with front A/C 14.4 quarts 13.6 L
VORTECŸ 4800 V8 Automatic with front and rear A/C 15.8 quarts 15.0 L
VORTECŸ 5300 V8 Automatic with front A/C 14.4 quarts 13.6 L
VORTECŸ 5300 V8* Automatic with front and rear A/C 15.8 quarts 15.0 L
VORTECŸ 6000 V8 Automatic 15.8 quarts 15.0 L
VORTECŸ 6000 V8** Automatic with engine oil cooler 15.4 quarts 14.6 L
VORTECŸ 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.
After re®ll, the level must be rechecked. Add enough engine oil so that the ¯uid is within the proper operating range.
See
Engine Oil on page 5-18.
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Capacities
ApplicationCapacities
English Metric
Engine Oil with Filter
VORTECŸ 4800 V8 VIN V 6.0 quarts² 5.7 L²
VORTECŸ 5300 V8 VIN T 6.0 quarts² 5.7 L²
VORTECŸ 5300 V8 VIN Z (E-85) 6.0 quarts² 5.7 L²
VORTECŸ 6000 V8 VIN U 6.0 quarts² 5.7 L²
VORTECŸ 8100 V8 VIN G 6.5 quarts² 6.1 L²
Fuel Tank Capacity
Tahoe/Yukon 26.0 gallons 98.4 L
Suburban/Yukon XL (1500 Series) 31.0 gallons 117.3 L
Suburban/Yukon XL (2500 Series) 37.5 gallons 140.0 L
Air Conditioning Refrigerant Capacity
Tahoe/Yukon 2.71 lbs. 1.23 kg
Suburban/Yukon XL 3.0 lbs. 1.36 kg
²Oil ®lter should be changed at every oil change.
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