Genuine 2003 GMC Sierra Chassis Wiring Harness Connector

74 Chassis Wiring Harness Connectors found

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  2003 GMC Sierra Connector,Block, Rear Lamp Wiring Harness Junction *Blue

  Part Number: 19167008

  $32.47 MSRP: $104.46

  You Save: $71.99 (69%)

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  Product Specifications

  • Other Name: CONNECTOR, Wiring Junction
  • Position: Rear
  • Replaces: 13587175, 13585476, 15306114
  • Item Weight: 0.60 Pounds
  • Item Dimensions: 2.1 x 10.2 x 10.2 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 19167008
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

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  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 8.1L
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  2003 GMC Sierra Connector Assembly, Wiring Harness *Black

  Part Number: 13587152

  $49.84 MSRP: $111.26

  You Save: $61.42 (56%)

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical
  • Replaces: 15326840, 15306241
  • Item Weight: 0.40 Pounds
  • Item Dimensions: 2.1 x 2.1 x 1.0 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 13587152
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

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  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 EXTENDED CAB LONG BOX, 2500 REGULAR CAB | 8 Cyl 6.6L Diesel
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  2003 GMC Sierra Connector,Switch, Brake Fluid Level Indicator *Gray

  Part Number: 88987993

  $36.37 MSRP: $81.18

  You Save: $44.81 (56%)

  Ships in 1-3 Business Days

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  Product Specifications

  • Other Name: CONNECTOR, Computer Control Sensors
  • Replaces: 15306195, 88987978, 88987183, 12046623, 12126469, 12101899, 15329175
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 9.4 x 4.8 x 0.7 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 88987993
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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  2003 GMC Sierra Connector, W/Leads, 2-Way F. *Black *Math Data

  Part Number: 12085535

  $11.14 MSRP: $35.88

  You Save: $24.74 (69%)

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical
  • Item Weight: 0.30 Pounds
  • Item Dimensions: 9.2 x 5.2 x 0.5 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12085535
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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  2003 GMC Sierra Connector, W/Leads, 3-Way F. *Black

  Part Number: 12117025

  $34.95 MSRP: $65.94

  You Save: $30.99 (47%)

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  Product Specifications

  • Other Name: CONNECTOR, Distributor (also Knock Sensor)
  • Item Weight: 0.50 Pounds
  • Item Dimensions: 11.5 x 3.6 x 1.0 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12117025
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 161.5, 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
• 

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  2003 GMC Sierra Connector Asm,Wiring Harness W/Leads *Black

  Part Number: 13586114

  $26.03 MSRP: $49.12

  You Save: $23.09 (48%)

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  Product Specifications

  • Other Name: CONNECTOR, Windshield Washer
  • Replaces: 12102747
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 12.7 x 8.2 x 1.1 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 13586114
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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  2003 GMC Sierra Connector Asm,Wiring Harness W/Leads *Black

  Part Number: 13585316

  $29.48 MSRP: $55.62

  You Save: $26.14 (47%)

  Ships in 1-3 Business Days

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  Product Specifications

  • Other Name: CONNECTOR, Distributor (also Knock Sensor)
  • Replaces: 12085495, 88986451, 13580870
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 9.5 x 3.6 x 0.6 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 13585316
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L
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  2003 GMC Sierra Connector, W/Leads, 4-Way M. *Black *Math Data

  Part Number: 15305801

  $40.57 MSRP: $76.54

  You Save: $35.97 (47%)

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  Product Specifications

  • Other Name: CONNECTOR, Computer Control Sensors; Oxygen Sensor
  • Item Weight: 0.50 Pounds
  • Item Dimensions: 5.1 x 3.1 x 2.6 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 15305801
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L
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  2003 GMC Sierra Connector,Motor, Fuel Pump

  Part Number: 88988598

  $39.48 MSRP: $126.98

  You Save: $87.50 (69%)

  Ships in 1-3 Business Days

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  Product Specifications

  • Other Name: CONNECTOR, Computer Control Sensors
  • Replaces: 12167154, 15305876
  • Item Weight: 0.50 Pounds
  • Item Dimensions: 13.7 x 5.0 x 0.8 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 88988598
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L
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  2003 GMC Sierra Connector, W/Leads, 2-Way M. *Black

  Part Number: 12167120

  $33.29 MSRP: $62.82

  You Save: $29.53 (48%)

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical; Harness
  • Replaces: 12125649, 12146134, 12162000
  • Item Weight: 0.40 Pounds
  • Item Dimensions: 10.9 x 4.6 x 0.6 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12167120
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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  2003 GMC Sierra Connector,Air Switch Valve(W/Leads) *Green

  Part Number: 12101856

  $25.48 MSRP: $48.09

  You Save: $22.61 (48%)

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  Product Specifications

  • Other Name: CONNECTOR, Ambient Outside Air Temperature
  • Item Weight: 0.40 Pounds
  • Item Dimensions: 8.8 x 6.3 x 0.6 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12101856
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
• 

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  2003 GMC Sierra Connector,Switch, Parking/Neutral Position

  Part Number: 15305887

  $78.55 MSRP: $175.32

  You Save: $96.77 (56%)

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  Product Specifications

  • Other Name: CONNECTOR, Transmission Safety Starting Switch Or Speed Sensing
  • Item Weight: 0.60 Pounds
  • Item Dimensions: 9.1 x 4.6 x 1.1 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 15305887
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
• 

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  2003 GMC Sierra Connector, W/Leads, 4-Way F. *Black *Math Data

  Part Number: 12102900

  $39.40 MSRP: $74.34

  You Save: $34.94 (47%)

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical; Connector, Wire Connector
  • Item Weight: 0.50 Pounds
  • Item Dimensions: 9.4 x 4.9 x 0.6 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12102900
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
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  2003 GMC Sierra Connector,Wiring Harness

  Part Number: 12101898

  $26.70 MSRP: $50.38

  You Save: $23.68 (47%)

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  Product Specifications

  • Other Name: CONNECTOR, Capsule/Headlamp/Fog Lamp; Connector, Socket
  • Item Weight: 0.40 Pounds
  • Item Dimensions: 8.9 x 4.8 x 1.7 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 12101898
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L
• 

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  2003 GMC Sierra Connector,Wiring Harness

  Part Number: 13584094

  $21.92 MSRP: $41.36

  You Save: $19.44 (47%)

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical
  • Replaces: 88988944, 88953153, 15326829
  • Item Weight: 0.30 Pounds
  • Item Dimensions: 13.1 x 5.1 x 1.1 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 13584094
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
• 

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  2003 GMC Sierra CONNECTOR KIT,WRG HARN

  Part Number: 19368669

  $30.56 MSRP: $57.66

  You Save: $27.10 (47%)

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  Product Specifications

  • Replaces: 12126473, 15306432, 88987969, 88988301, 12102748, 19301715
  • Item Weight: 1.20 Pounds
  • Item Dimensions: 3.7 x 3.7 x 1.1 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 19368669
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L
• 

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  2003 GMC Sierra CONNECTOR KIT,WRG HARN *BLACK

  Part Number: 19367637

  $48.81 MSRP: $108.94

  You Save: $60.13 (56%)

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  Product Specifications

  • Other Name: Sensor Connector
  • Replaces: 88986255, 13580112, 88986452
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 9.2 x 4.3 x 1.1 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 19367637
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

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  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 6.6L Diesel, 8 Cyl 8.1L
• 

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  2003 GMC Sierra Connector Asm,Wiring Harness W/ Leads *Gray

  Part Number: 13580883

  $43.58 MSRP: $97.28

  You Save: $53.70 (56%)

  Ships in 1 Business Day

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  Product Specifications

  • Other Name: CONNECTOR, Ignition Coil
  • Replaces: 12102754
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 10.8 x 5.6 x 1.7 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 13580883
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L
• 

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  2003 GMC Sierra Connector Kit,Inline, To Fwd Lamp Harness *Black

  Part Number: 19153767

  $24.69 MSRP: $38.82

  You Save: $14.13 (37%)

  Ships in 1-3 Business Days

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  Product Specifications

  • Other Name: CONNECTOR, Chassis Electrical
  • Replaces: 15366099
  • Item Weight: 0.40 Pounds
  • Item Dimensions: 4.2 x 2.8 x 1.7 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 19153767
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB | 8 Cyl 6.6L Diesel
• 

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  2003 GMC Sierra Connector,Sensor, Transfer Case Fluid Temperature

  Part Number: 19178093

  $36.39 MSRP: $68.66

  You Save: $32.27 (47%)

  Ships in 1-2 Business Days

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  Product Specifications

  • Other Name: CONNECTOR, Computer Control Sensors
  • Replaces: 15306187
  • Item Weight: 0.70 Pounds
  • Item Dimensions: 2.6 x 2.6 x 2.2 inches
  • Condition: New
  • Fitment Type: Direct Replacement
  • SKU: 19178093
  • Warranty: This genuine part is guaranteed by GM's factory warranty.

  More Info

  Fits the following 2003 GMC Sierra Submodels:

  • 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L, 8 Cyl 6.6L Diesel, 8 Cyl 8.1L