2003 CHEVROLET SILVERADO 4WD

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
4800 V8 (Manual)3.73
4.105,000 lbs. (2 267 kg)
6,000 lbs. (2 721 kg)10,000 lbs. (4 540 kg)
11,000 lbs. (4 994 kg)
5300 V83.73
4.108,000 lbs. (3 628 kg)
9,000 lbs. (4 082 kg)*13,000 lbs. (5 902 kg)
14,000 lbs. (6 356 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,000 lbs (454 kg). Fifth-wheel or
gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs. (680 kg) maximum.
**Maximum weight 8,900 lbs. (4 036 kg) for ®fth-wheel and gooseneck.
Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-1500 Extended Cab Long Box (4WD)
4800 V83.73
4.106,700 lbs. (3 041 kg)
7,700 lbs. (3 495 kg)**12,000 lbs. (5 448 kg)
13,000 lbs. (5 902 kg)
4800 V8 (Manual)3.73
4.104,700 lbs. (2 133 kg).
5,700 lbs. (2 587 kg)10,000 lbs. (4 540 kg)
11,000 lbs. (4 994 kg)
5300 V83.73
4.107,700 lbs. (3 495 kg)**
8,700 lbs. (3 949 kg)**13,000 lbs. (5 902 kg)
14,000 lbs. (6 356 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,000 lbs (454 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 1,500 lbs. (680 kg) maximum.
**Maximum weight 6,800 lbs. (3 084 kg) for ®fth-wheel and gooseneck.
4-76

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
C-2500 Crew Cab Long Box HD (2WD)
6000 V8 4.10 9,900 lbs. (4 490 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,500 lbs. (6 123 kg)**
15,500 lbs. (7 030 kg)20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,200 lbs. (6 894 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs. (1 360 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-2500 LD (4WD)*
6000 V83.73
4.108,200 lbs. (3 719 kg)
10,200 lbs. (4 626 kg)14,000 lbs. (6 356 kg)
16,000 lbs. (7 264 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 2,500 lbs. (1 133 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
4-79

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-2500 Regular Cab Long Box HD (4WD)*
6000 V8 4.10 10,300 lbs. (4 672 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,800 lbs. (6 259 kg)**
15,800 lbs. (7 166 kg)**20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,700 lbs. (7 121 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs. (1 360 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-2500 Extended Cab Short Box HD (4WD)*
6000 V8 4.10 10,100 lbs. (4 630 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,600 lbs. (6 168 kg)**
13,600 lbs. (6 168 kg)**20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,400 lbs. (6 985 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs. (1 360 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
4-80

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-2500 Extended Cab Long Box HD (4WD)**
6000 V8 4.10 9,900 lbs. (4 494 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,400 lbs. (6 078 kg)**
15,400 lbs. (6 985 kg)**20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,300 lbs. (6 939 kg)** 22,000 lbs. (9 988 kg)
K-2500 Crew Cab Short Box HD (4WD)*
6000 V8 4.10 9,800 lbs. (4 449 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,300 lbs. (6 032 kg)**
15,300 lbs. (6 939 kg)20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 14,700 lbs. (6 667 kg)** 22,000 lbs. (9 988 kg)
4* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs. (1 360 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-2500 Crew Cab Long Box HD (4WD)
6000 V8 4.10 9,600 lbs. (4 354 kg) 16,000 lbs. (7 264 kg)
8100 V83.73
4.1013,200 lbs. (5 987kg)**
14,700 lbs. (6 667 kg)**20,000 lbs. (9 080 kg)
22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 13,700 lbs. (6 214 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs. (1 360 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch).
4-81

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
C-3500 Extended Cab (2WD)
6000 V8 4.10 9,800 lbs. (4 449 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 15,400 lbs. (6 985 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,200 lbs. (6 894 kg)** 22,000 lbs. (9 988 kg)
C-3500 Crew Cab (2WD)*
6000 V8 4.10 9,500 lbs. (4 309 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 15,700 lbs. (7 121 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 15,000 lbs. (6 803 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,500 lbs. (1 587 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-3500 Regular Cab (4WD)
6000 V8 4.10 9,900 lbs. (4 494 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 15,500 lbs. (7 030 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 3.73 15,400 lbs. (6 985 kg)** 22,000 lbs. (5 448 kg)
K-3500 Extended Cab (4WD)*
6000 V8 4.10 9,500 lbs. (4 309 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 15,100 lbs. (6 849 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 14,900 lbs. (6 758 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,500 lbs. (1 587 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
4-82

Vehicle* Axle Ratio Maximum Trailer Weight GCWR
K-3500 Crew Cab (4WD)*
6000 V8 4.10 9,200 lbs. (4 173 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 14,800 lbs. (6 713 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 14,700 lbs. (6 667 kg)** 22,000 lbs. (9 988 kg)
* Tongue weight should be 10 percent to 15 percent of trailer weight up to 1,500 lbs (680 kg). Fifth-wheel or
gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,500 lbs. (1 587 kg) maximum.
** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch.
The Gross Combination Weight Rating (GCWR) is the
total allowable weight of the completely loaded
vehicle and trailer including any passengers, cargo,
equipment and conversions. The GCWR for your vehicle
should not be exceeded.
You can ask your dealer for our trailering information or
advice, or you can write us at the address listed in
your Warranty and Owner Assistance Information
Booklet.In Canada, write to:
General Motors of Canada Limited
Customer Communications Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
4-83

Fuses Usage
RR Wiper Not Used
SEO ACCYSpecial Equipment Option
Accessory
WS WPR Windshield Wipers
TBC ACCYTruck Body Controller
Accessory
IGN 3 Ignition, Heated Seats
4WDFour-Wheel Drive System,
Auxiliary Battery
Fuses Usage
HTR A/C Climate Control System
LOCK (Relay)Power Door Lock Relay
(Lock Function)
HVAC 1 Climate Control System
L DOORDriver's Door Harness
Connection
CRUISECruise Control, Power Take
Off (PTO)
UNLOCK (Relay)Power Door Lock Relay
(Unlock Function)
RR FOG LP Not Used
BRAKE Anti-Lock Brake System
DRIVER UNLOCKPower Door Lock Relay
(Driver's Door Unlock
Function)
IGN 0 TCM
TBC IGN 0 Truck Body Controller
VEH CHMSLVehicle and Trailer High
Mounted Stoplamp
LT TRLR ST/TRN Left Turn Signal/Stop Trailer
LT TRNLeft Turn Signals and
Sidemarkers
VEH STOPVehicle Stoplamps, Brake
Module, Electronic Throttle
Control Module
RT TRLR ST/TRN Right Turn Signal/Stop Trailer
5-111

Safety Belts (cont.)
Rear Seat Passengers.................................1-26
Right Front Passenger Position......................1-24
Safety Belt Extender....................................1-31
Safety Belt Use During Pregnancy.................1-23
Safety Belts Are for Everyone.......................1-10
Safety Chains.................................................4-85
Safety Warnings and Symbols.............................. iii
Scanning the Terrain.......................................4-27
Scheduled Maintenance..................................... 6-5
Seatback Latches............................................. 1-7
Seat............................................................... 1-7
Head Restraints............................................ 1-7
Seats.............................................................. 1-5
Heated Seats............................................... 1-5
Manual........................................................ 1-3
Memory.....................................................2-66
Power Lumbar.............................................. 1-4
Power Seats................................................. 1-4
Rear Seat Operation...............................1-8, 1-9
Reclining Seatbacks...................................... 1-5
Seatback Latches.......................................... 1-7
Secondary Latch System.................................5-96
Securing a Child Restraint................................1-55
Center Front Seat Position............................1-55
Center Rear Seat Position............................1-52
Designed for the LATCH System...................1-49
Rear Outside Seat Position...........................1-50
Right Front Seat Position......................1-55, 1-58Select Button.................................................3-64
SERVICE 4 WHEEL STEER.............................3-69
SERVICE 4WD...............................................3-69
SERVICE AIRBAG..........................................3-68
SERVICE BRAKE BOOSTER...........................3-68
SERVICE BRAKE SYSTEM.............................3-68
Service Bulletins.............................................7-10
Service Manuals............................................... 7-9
SERVICE RIDE CONTROL..............................3-69
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-49
Publications Ordering Information..................... 7-9
Setting Preset PTYs (RDS Only).....3-79, 3-89, 3-102
Setting Preset Stations..........3-73, 3-77, 3-87, 3-100
Setting the Time.............................................3-72
Radios with Radio Data Systems (RDS).........3-72
Radios without Radio Data Systems (RDS).....3-72
Setting the Tone
(Bass/Treble)....................3-73, 3-77, 3-87, 3-100
Sheet Metal Damage.....................................5-105
Shift Speeds..................................................2-32
Shifting Into Park (P).......................................2-46
Shifting Out of Park (P)...................................2-49
Single Stage Air Bags.....................................1-69
Single Stage vs. Dual Stage Air Bags................1-68
15