Wiring Harness/Engine fit your 2003 Chevrolet Avalanche 2500 4WD

Currently shopping for

2003 Chevrolet Avalanche 2500 4WD

Change Vehicle

Vehicle Options

8 Cyl 8.1L; Avalanche 3/4 Ton

Vehicle Options

8 Cyl 8.1L; Avalanche 3/4 Ton

Categories Close X

Currently selected

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment

Brakes

Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers

Cooling System, Grille, Oil System

Engine

Frames, Springs, Shocks, Bumpers, Fascias

Front Axle, Front Suspension, Steering

Front End Sheet Metal, Heater

Fuel System, Exhaust, Emission System

Maintenance Parts, Fluids, Capacities, Electrical Connectors

Rear Body Structure, Moldings & Trim, Cargo Stowage

Transfer Case

Transmission - Automatic

Transmission - Manual

How to use OE catalog

Sort by:

Recommended

Part No. & Part Description

Price & Qty.

Part No. &
Part Description

CONNECTOR, Distributor (also Knock Sensor)
13586114
CONNECTOR, SENSOR-KNOCK(PART OF 1)(BLACK)(ACCEPTS 1.5MM TERMS)(2-WAY FEMALE)(METRI-PACKING 150 SERIES)(W/LEADS)(1.203)
Fitting Vehicle Options: CK1,2,3
$50.05 $27.16
1
Add To Cart
12102621
CONNECTOR, SENSOR-KNOCK(ENGINE HARNESS)(PART OF 1)(GRAY)(1-WAY MALE)(W/LEADS)(2.535)
- Fitting Vehicle Options: CK1,2,3
- Require Quantity: 02
- Package Quantity: 1
$33.58 $17.80
1
Add To Cart
19332518
CONNECTOR, SENSOR-KNOCK(PART OF 1)(1-WAY FEMALE)(W/LEADS)(2.530)
- Fitting Vehicle Options: CK2,3(L18)
- Require Quantity: 02
- Package Quantity: 1
$38.00 $20.14
1
Add To Cart

CONNECTOR, Engine Oil Level
13586114
CONNECTOR, SENSOR-ENGINE OIL LEVEL(PART OF 1)(BLACK)(ACCEPTS 1.5MM TERMS)(2-WAY FEMALE)(METRI-PACKING 150 SERIES)(W/LEADS)(1.203)
Fitting Vehicle Options: CK1,2,3
$50.05 $27.16
1
Add To Cart
88953151
CONNECTOR, SENSOR-ENGINE OIL LEVEL(PART OF 1)(NATURAL)(2-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK2,3(L18)

CONNECTOR, Generator
15306071
CONNECTOR, GENERATOR(PART OF 1)(NATURAL)(1-WAY FEMALE)(W/LEADS)
Fitting Vehicle Options: CK2,3
$28.68 $15.20
1
Add To Cart
15306329
CONNECTOR, GENERATOR(PART OF 1)(BEIGE)(2-WAY FEMALE)(4-WAY BASE W/LEADS)
- Fitting Vehicle Options: CK1,2,3
$55.90 $29.63
1
Add To Cart
15306009
CONNECTOR, GENERATOR(PART OF 1)(BLACK)(4-WAY FEMALE METRI-PACK 150)(W/LEADS)(OVAL)(2.530)
- Fitting Vehicle Options: CK1,2
$59.68 $34.02

88987993
CONNECTOR, Computer Control Sensors, CONNECTOR,SENSOR-VEHICLE SPEED(PART OF 1)(GRAY)(2-WAY FEMALE)(GT150 SEALED)(W/LEADS)(4.651)
$79.78 $41.34
1
Add To Cart

CONNECTOR, Chassis Electrical
15326942
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(12-WAY MALE)(W/O LEADS)
Fitting Vehicle Options: CK1,2(06-36)
$6.33 $4.10
1
Add To Cart
19368859
CONNECTOR, CHASSIS WIRING HARNESS(STARTER MOTOR X1)(PART OF 1)(GRAY)(4MM2)(1-WAY FEMALE)(W/LEADS)(SIDE ELECTRIC CODE: M64)
- Fitting Vehicle Options: CK1,2,3
$64.19 $34.32
1
Add To Cart
12065172
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(1-WAY FEMALE M/P280)(2.535)
- Fitting Vehicle Options: CK1,2,3
$7.01 $4.56
1
Add To Cart
12167120
CONNECTOR, CHASSIS WIRING HARNESS(METRI-PACK 150)(PART OF 1)(BLACK)(2-WAY MALE)(W/LEADS)(OVAL)(MATING CONNECT W/LEADS USE 12102747)(4.720)
- Fitting Vehicle Options: CK1,2,3
$69.34 $36.75
1
Add To Cart
19367637
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(BLACK)(1.5MM2)(8-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK259
$113.27 $50.42
1
Add To Cart
88986245
CONNECTOR, CHASSIS WIRING HARNESS(GT280)(PART OF 1)(BLACK)(10-WAY MALE)(W/LEADS, GT280)
- Fitting Vehicle Options: CK1,2
$281.10 $148.98
1
Add To Cart
15326843
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(BLACK)(10-WAY FEMALE)(W/O LEADS)(W/CONNECTOR POSITION ASSURANCE)
- Fitting Vehicle Options: CK1,2,3
$8.53 $5.54
15306125
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(BLUE)(12-WAY MALE)(W/LEADS)(GT150/280)
- Fitting Vehicle Options: CK1,2,3
19151508
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(BLACK)(38-WAY MALE)(W/STABILIZER, TERMINAL POSITION ASSURANCE & CAVITY PLUGS)
- Fitting Vehicle Options: CK1,2(06-36)
19167005
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(BLACK)(24-WAY MALE)(W/CAVITY PLGS,TPAS & PILLAR)(W/O LEADS)
- Fitting Vehicle Options: CK1,2
$36.08 $23.44
88953290
CONNECTOR, CHASSIS WIRING HARNESS(PART OF 1)(NATURAL)(12-WAY MALE W/LEADS)
- Fitting Vehicle Options: CK1,2,3

CONNECTOR, Chassis Electrical
15300003
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(3-WAY MALE)(W/O LEADS)(METRI-PACK 280-BODY ONLY)
Fitting Vehicle Options: K1,2,3
$7.20 $4.67
1
Add To Cart
13584094
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(GT150)(PART OF 1)(BLACK)(6-WAY FEMALE)(W/LEADS)(2.383)
- Fitting Vehicle Options: CK2,3(LB7,L18,ML6,M74)
$45.64 $24.19
1
Add To Cart
13584253
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(8-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
$63.42 $33.61
1
Add To Cart
15304692
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(18-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
$6.27 $4.07
1
Add To Cart
15326829
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(6-WAY FEMALE GT150)(W/O LEADS)(HAS FULL SHROUD)
- Fitting Vehicle Options: CK2,3(LB7,L18,ML6,M74)
- Replaced By: 13584094
$45.64 $24.19
1
Add To Cart
19151490
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(10-WAY MALE)(W/O LEADS)(W/TERMINAL POSITION ASSURANCE & CAVITY PLUG)(13.100)
- Fitting Vehicle Options: CK1,2,3
$26.37 $17.15
1
Add To Cart
19181245
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(2IN WIDE, METRI-PACK 150/280)(PART OF 1)(BLACK)(16-WAY MALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
$9.04 $4.79
1
Add To Cart
19368866
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(METRI-PACK 150)(PART OF 1)(BLACK)(2MM2)(6-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
$65.30 $34.61
1
Add To Cart
88986252
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(12-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
$329.26 $209.84
1
Add To Cart
88986267
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(FROM FUSE BLOCK BRAKE JUMPER)(PART OF 1)(BLACK)(34.6MM WIDE)(12-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
$280.80 $178.95
1
Add To Cart
88987998
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(YELLOW)(4-WAY MALE)(METRI-PACK 280)(W/LEADS)(16.712)
- Fitting Vehicle Options: CK1,2,3
- Require Quantity: 02
- Package Quantity: 1
$127.92 $55.84
1
Add To Cart
88988307
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(40-WAY MALE)(W/O LEADS)(W/CAM LEVER, TERMINAL POSITION ASSURANCE & STABLZR)
- Fitting Vehicle Options: CK1,2,3
$42.82 $24.41
1
Add To Cart
12085487
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(4-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
12085669
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(1-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
12129135
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(4-WAY MALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
12129490
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(FROM LH FRONT DOOR)(PART OF 1)(BLACK)(3-WAY MALE)(W/O LEADS)(CLIP SLOT)
- Fitting Vehicle Options: CK1,2
13578569
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(GRAY)(22-WAY MALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
$29.33 $19.06
15306231
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(GRAY)(24-WAY MALE W/O LEADS)(9.656)
- Fitting Vehicle Options: CK1,2,3
15306371
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(FROM HEADLINING HARNESS, GT150)(PART OF 1)(BLACK)(16-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
19153767
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(BLACK)(24-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2(06-36)
$38.82 $25.24
19260871
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(SEAT HARNESS TO BODY HARNESS, GT150/280)(PART OF 1)(BLACK)(16-WAY MALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
88987501
CONNECTOR, INSTRUMENT PANEL WIRING HARNESS(PART OF 1)(12-WAY MALE GT)(W/O LEADS)
- Fitting Vehicle Options: K1,2,3

11502848
NUT, Hexagon, NUT,HEXAGON STYLE M5X.8X4.45(TO STARTER)(PART OF 1)
- Replaced By: 11609467
$6.24 $4.06
1
Add To Cart

CONNECTOR, Wiring Junction
19167008
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(BLUE)(8-WAY FEMALE)(SEALED)(W/LEADS)(14GA WIRES)(13.100)
Fitting Vehicle Options: CK1,2,3
$121.08 $54.18
1
Add To Cart
12085535
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(SQUARE)(PART OF 1)(BLACK)(2-WAY FEMALE)(W/LEADS)(SQUARE)(2.535)
- Fitting Vehicle Options: CK1,2(06-36)
$39.60 $20.99
1
Add To Cart
15306133
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(METRI-PACK 480)(PART OF 1)(BLACK)(2-WAY MALE)(W/LEADS)(9.276)
- Fitting Vehicle Options: CK1,2,3
$45.02 $23.86
1
Add To Cart
12193929
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(GREEN)(6-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
15306105
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(CREAM)(6 WAY FEMALE)(LEADS)
- Fitting Vehicle Options: CK1,2,3
15306106
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(BROWN)(6-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3(V92,Z82)
15306107
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(BLACK)(6-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
19115428
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(BLACK)(68-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
19167006
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(GREEN)(32-WAY FEMALE)(UNSEALED)(W/O LEADS)(W/TPAS)
- Fitting Vehicle Options: CK1,2,3
19167007
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(RED)(32-WAY FEMALE)(UNSEALED)(W/O LEADS)(W/TPAS)
- Fitting Vehicle Options: CK1,2,3
88986446
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(2-WAY FEMALE)(W/LEADS)
- Fitting Vehicle Options: CK1,2,3
88988945
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(LIGHT GRAY)(68-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3
89046826
CONNECTOR, BLOCK-ACCESSORY WIRING JUNCTION(PART OF 1)(BROWN)(12-WAY FEMALE)(W/O LEADS)
- Fitting Vehicle Options: CK1,2,3

13580883
CONNECTOR, Ignition Coil, CONNECTOR,COIL-IGNITION(ENGINE HARNESS)(PART OF 1)(GRAY)(7-WAY FEMALE)(W/LEADS)(2.530)
- Require Quantity: 02
- Package Quantity: 1
$107.36 $46.87
1
Add To Cart

CONNECTOR, Throttle Control
15305916
CONNECTOR, MOTOR-THROTTLE ACTUATOR(PART OF 1)(BLACK)(10-WAY FEMALE)(W/LEADS)(3.885)
Fitting Vehicle Options: CK2
$168.59 $75.44
1
Add To Cart
19367637
CONNECTOR, MOTOR-THROTTLE ACTUATOR(PART OF 1)(BLACK)(1.5MM2)(8-WAY FEMALE)(W/LEADS)(2.530)
- Fitting Vehicle Options: CK1,2,3
$113.27 $50.42
1
Add To Cart

19368669
CONNECTOR, Engine Oil Pressure/Temperature, CONNECTOR,ENGINE OIL PRESSURE GAGE SENSOR(ROUND)(PART OF 1)(BLACK)(0.75MM)(3-WAY FEMALE)(W/LEADS)(2.530)
$58.40 $31.83
1
Add To Cart

12167308
CONNECTOR, Emission Control System, CONNECTOR,POWERTRAIN CONTROL MODULE(PART OF 1)(INCLUDES SEAL,COVER,RETS)(W/O LEADS)(80-WAY FEMALE USE TERMINAL 12084912 18 GAGE & TERMINAL 12084913 20 GAGE)
- Require Quantity: 02
- Package Quantity: 1
$78.31 $50.89

CONNECTOR, Electronic Brake Control
88987977
CONNECTOR, ELECTRONIC TRACTION CONTROL MODULE(PART OF 1)(16-WAY F W/O LEADS INCLUDES CONNECT,TERMINAL POSITION ASSURANCE,CONNECTOR POSITION ASSURANCE,CABLE & STRAIN RELIEF LOCATING)(3.670)
Fitting Vehicle Options: CK1,2,3
$62.96 $33.37
1
Add To Cart
12117372
CONNECTOR, ELECTRONIC TRACTION CONTROL MODULE(PART OF 1)(BLACK)(10-WAY MALE)(W/ LEADS)
- Fitting Vehicle Options: CK2,3

CONNECTOR, Distributor (also Knock Sensor)
13585316
CONNECTOR, CAMSHAFT POSITION SENS(W/O SIDE TABS)(PART OF 1)(BLACK)(3-WAY FEMALE)(W/LEADS)(2.535)
Fitting Vehicle Options: CK1,2,3
$53.99 $30.09
1
Add To Cart
88987997
CONNECTOR, CAMSHAFT POSITION SENS(PART OF 1)(GRAY)(3-WAY FEMALE)(W/LEADS)(3.682)
- Fitting Vehicle Options: CK2,3(L18)
$79.05 $35.02
1
Add To Cart

CONNECTOR, Chassis Electrical
15305857
CONNECTOR, INLINE-TO TRANS(PART OF 1)(GRAY)(14-WAY FEMALE)(W/LEADS)(ACTUALLY 20-WAY W/6 CAVITIES MOLDED)
Fitting Vehicle Options: CK1,2,3
$195.90 $85.53
1
Add To Cart
19328670
CONNECTOR, INLINE-TO TRANS(PART OF 1)(BLACK)(20-WAY FEMALE)(W/O LEADS)(MAY NEED WIRE 13582227)
- Fitting Vehicle Options: CK2,3(M74)
$81.38 $43.13
1
Add To Cart

15305887
CONNECTOR, Transmission Safety Start/Warning, CONNECTOR,SWITCH-PARKING/NEUTRAL POSITION(PART OF 1)(GRAY)(7-WAY FEMALE)(W/LEADS)
$179.97 $54.88
1
Add To Cart

15306027
CONNECTOR, Emission Control System, CONNECTOR,SOLENOID-EGR VALVE(PART OF 1)(LIGHT GRAY)(5-WAY FEMALE)(W/LEADS)(W/COVER)(2.530)
$67.78 $35.92
1
Add To Cart

15306113
CONNECTOR, Computer Control Sensors, CONNECTOR,SENSOR-MASS AIRFLOW(SHROUD HAS ROUND EDGES, PURPLE, RECTANGLE)(PART OF 1)(BLACK)(5-WAY FEMALE)(W/LEADS)
$75.44 $39.97
1
Add To Cart

15306119
CONNECTOR, Multi PORTION Fuel Injection Throttle Position, CONNECTOR,SENSOR-THROTTLE POSITION(PART OF 1)(GRAY)(10-WAY FEMALE)(W/LEADS)(2.530)
$106.74 $56.56
1
Add To Cart

15306120
CONNECTOR, Distributor (also Knock Sensor), CONNECTOR,SENSOR-CRANKSHAFT POSITION(PART OF 1)(NATURAL)(3-WAY FEMALE)(W/LEADS)
$64.33 $34.09
1
Add To Cart

19368034
CONNECTOR, A/C Compressor (Internal Parts), CONNECTOR,SWITCH-A/C CYCLING SWITCH(PART OF 1)(GRAY)(2-WAY FEMALE)(W/LEADS)(2.530)
$54.17 $29.25
1
Add To Cart

19368864
CONNECTOR, A/C Electric Temperature and Motor Control, CONNECTOR,MODULE-BLOWER MOTOR CONTROL(PART OF 1)(BLACK)(2.5MM2)(3-WAY FEMALE)(W/LEADS)(2.530)
$70.56 $37.40
1
Add To Cart

88987185
CONNECTOR, Safety Starting Switch Or Speed Sensing, CONNECTOR,SWITCH-PARKING/NEUTRAL POSITION(PART OF 1)(BLACK)(4-WAY FEMALE)(W/LEADS)(2.530)
$111.40 $59.03
1
Add To Cart

88987997
CONNECTOR, Computer Control Sensors, CONNECTOR,MAP SENS(PART OF 1)(GRAY)(3-WAY FEMALE)(W/LEADS)
$79.05 $35.02
1
Add To Cart

88988814
CONNECTOR, Wiring Junction, CONNECTOR,FUEL INJECTOR(1IN)(PART OF 1)(BLACK)(2-WAY FEMALE)(W/LEADS)(MICRO 064)
- Require Quantity: 08
- Package Quantity: 1
$59.86 $32.02
1
Add To Cart

12085485
CONNECTOR, Back Up Lamp, CONNECTOR,SWITCH-BACK UP LAMP(PART OF 1)(BROWN)(2-WAY MALE)(W/LEADS)
$34.71 $19.80

RETAINER, Chassis/Engine Wiring Harness
12129024
RETAINER, ECM WIRING HARNESS CONNECT(PART OF 1)(RED)(USE W/32-WAY CONNECT)
Fitting Vehicle Options: CK2,3(L18,LB7,M74,ML6)
12129030
RETAINER, ECM WIRING HARNESS CONNECT(PART OF 1)(GRAY)(STRAIN RELIEF)
- Fitting Vehicle Options: CK2,3(L18,LB7,M74,ML6)
- Require Quantity: 02
- Package Quantity: 1
12176408
RETAINER, ECM WIRING HARNESS CONNECT(PART OF 1)(BLUE)(RETAINS 40-WAY CONNECT)
- Fitting Vehicle Options: CK1,2,3
- Require Quantity: 02
- Package Quantity: 1

HARNESS, Engine Wiring
15192290
HARNESS, ENGINE WIRING(INCLUDES 2-32)
Fitting Vehicle Options: CK2,3(L18,ML6,NF4,NF9,NT9)(EXC PTO)
15192293
HARNESS, ENGINE WIRING(INCLUDES 2-32)
- Fitting Vehicle Options: CK2(L18,MN8,NC1), CK2(06-36)(L18,MN8,NF4,NF9,NT9)
15192297
HARNESS, ENGINE WIRING(INCLUDES 2-32)
- Fitting Vehicle Options: CK2,3(L18,M74,NF4,NF9,NT9)(EXC PTO), CK2,3(L18,M74,NC1,NC8)(EXC PTO)

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2003 Chevrolet Avalanche 2500 4WD parts. Parts like Wiring Harness/Engine are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 8 Cyl 8.1L. Model Code: 3/4 TON.