Search Bar
Search by Part Number or Keywords
  • My Garage
  • My Account
  • Cart
  • Body & Mirrors
  • Chassis & Brakes
  • Engine & Drivetrain
  • Electrical & Lighting
Help Center
< Back ×
Replacement and OEM Parts for 2018 GMC Sierra 3500 HD Junction Boxes

2018 GMC Sierra 3500 HD Junction Boxes

My Vehicle Change Vehicle
2018 GMC Sierra 3500 HD
Change Vehicle
Vehicle Options
We need more information about your vehicle to make a correct determination of fitment
< Back to View All
Fuses & Fuse Box
  • Department
  • Prices

7 Products found

Show Item:
  • 30
  • 60
  • 90
Sort by:
Recommended
Filter
Sort
View by
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 23443944
    OEM 2018 GMC Sierra 3500 HD Fuse & Relay Box - 23443944
    Product Specifications
    • Notes: Instrument Panel, Passenger Side, W/Rear Slider
    • Location: Passenger Side
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 7.8 x 6.4 x 6.5 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 22988417, 23176466
    • Part Description: 2018 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $96.85 MSRP: $153.78
    You Save: $56.93 (38%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 23459420
    OEM 2018 GMC Sierra 3500 HD Fuse & Relay Box - 23459420
    Product Specifications
    • Notes: Instrument Panel, Driver Side, W/O Pwr Adj Pedals
    • Location: Driver Side
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 7.9 x 6.4 x 6.5 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 23443945, 23176467
    • Part Description: 2018 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $96.88 MSRP: $153.82
    You Save: $56.94 (38%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Junction Block

    PartNumber: 23195441
    OEM 2018 GMC Sierra 3500 HD Junction Block - 23195441
    Product Specifications
    • Notes: Instrument Panel
    • Other Names: Junction Block
    • Item Dimensions: 16.2 x 9.6 x 9.3 inches
    • Item Weight: 1.60 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 22773749
    • Part Description: 2018 GMC Sierra 3500 HD Junction Block
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $100.90 MSRP: $160.21
    You Save: $59.31 (38%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 23443946
    OEM 2018 GMC Sierra 3500 HD Fuse & Relay Box - 23443946
    Product Specifications
    • Notes: Instrument Panel, Passenger Side, W/O Rear Slider
    • Location: Passenger Side
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 7.7 x 6.3 x 6.5 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 23176468, 22988419
    • Part Description: 2018 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $90.15 MSRP: $143.14
    You Save: $52.99 (38%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Fuse & Relay Box

    PartNumber: 23459422
    OEM 2018 GMC Sierra 3500 HD Fuse & Relay Box - 23459422
    Product Specifications
    • Notes: Instrument Panel, Driver Side, W/Pwr Adj Pedals
    • Location: Driver Side
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 7.8 x 6.2 x 6.5 inches
    • Item Weight: 1.20 Pounds
    • Replaces: 23443947, 23176469, 22988420
    • Part Description: 2018 GMC Sierra 3500 HD Fuse & Relay Box
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL
    $87.05 MSRP: $138.23
    You Save: $51.18 (38%)
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction

    PartNumber: 84303175
    OEM 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction - 84303175
    Product Specifications
    • Notes: Engine Compartment, 6.0 Liter
    • Other Names: Fuse & Relay Box, Junction Block
    • Item Dimensions: 9.7 x 5.7 x 15.8 inches
    • Item Weight: 2.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 23254025, 23285565, 84303177, 84008527, 84071500, 84303178, 84075778, 84008524, 84075768, 23285569, 23143470, 23285567, 23285572, 84303179, 84075777, 84008525, 84075776
    • Part Description: 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
  • OEM (Genuine) 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction

    PartNumber: 84303174
    OEM 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction - 84303174
    Product Specifications
    • Notes: Engine Compartment, 6.6 Liter Diesel
    • Other Names: Fuse & Relay Box
    • Item Dimensions: 16.3 x 9.5 x 5.6 inches
    • Item Weight: 2.40 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 23254027, 23143474, 23285571, 84017812, 84017811, 84303173, 84075775, 23285564, 84075769, 84075767, 84075774
    • Part Description: 2018 GMC Sierra 3500 HD Block Asm-Engine Wiring Harness Junction
    More Info
    Vehicle Fitment
    • 2018 GMC Sierra 3500 HD | Base, Denali, SLE, SLT | 8 Cyl 6.6 L DIESEL