Contact Us Live Chat or 1-888-220-8330
Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Login/Register My Account Track Order Help Center Contact Us
Replacement and OEM Parts for 2003 GMC Sierra 2500 HD Lighting Wiring Harnesses

2003 GMC Sierra 2500 HD Lighting Wiring Harnesses

My Vehicle Change Vehicle
2003 GMC Sierra 2500 HD
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Relays, Wiring & Connectors
  • Department
  • Prices

4 Products found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM 2003 GMC Sierra 2500 HD Harness Diagram - 88986855
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Harness

    PartNumber: 88986855
    OEM 2003 GMC Sierra 2500 HD Harness - 88986855
    Product Specifications
    • Notes: Fleetside, GMC
    • Location: Passenger Side
    • Other Names: Harness
    • Item Dimensions: 13.5 x 10.8 x 5.0 inches
    • Item Weight: 1.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 16526108
    • Part Description: 2003 GMC Sierra 2500 HD Harness
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $135.65 MSRP: $215.38
    You Save: $79.73 (38%)
  • OEM 2003 GMC Sierra 2500 HD Harness Diagram - 88986854
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Harness

    PartNumber: 88986854
    OEM 2003 GMC Sierra 2500 HD Harness - 88986854
    Product Specifications
    • Notes: Fleetside, GMC
    • Location: Driver Side
    • Other Names: Harness
    • Item Dimensions: 9.1 x 4.2 x 10.6 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 16526107
    • Part Description: 2003 GMC Sierra 2500 HD Harness
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $135.65 MSRP: $215.39
    You Save: $79.74 (38%)
  • OEM 2003 GMC Sierra 2500 HD Harness Diagram - 88986856
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Harness

    PartNumber: 88986856
    OEM 2003 GMC Sierra 2500 HD Harness - 88986856
    Product Specifications
    • Notes: Stepside
    • Location: Driver Side
    • Other Names: Harness
    • Item Dimensions: 4.1 x 12.5 x 10.5 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Harness
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $125.07 MSRP: $207.03
    You Save: $81.96 (40%)
  • OEM 2003 GMC Sierra 2500 HD Harness Asm, Tail Lamp Wiring Diagram - 88986857
    View Related Parts

    OEM (Genuine) 2003 GMC Sierra 2500 HD Harness Asm, Tail Lamp Wiring

    PartNumber: 88986857
    OEM 2003 GMC Sierra 2500 HD Harness Asm, Tail Lamp Wiring - 88986857
    Product Specifications
    • Notes: Stepside
    • Location: Passenger Side
    • Other Names: Harness
    • Item Dimensions: 11.8 x 9.8 x 4.5 inches
    • Item Weight: 1.40 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2003 GMC Sierra 2500 HD Harness Asm, Tail Lamp Wiring
    More Info
    Vehicle Fitment
    • 2003 GMC Sierra 2500 HD | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L BI-FUEL, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS