Home 2026 GMC Sierra 1500 SLT 3.0L L6 - Diesel Truck Box

Truck Box for 2026 GMC Sierra 1500

3. Box Assembly

6. Spare Carrier

7. Box Assembly 8. Truck Bed Panel Reinforcement

Truck Box for 2026 GMC Sierra 1500 #0

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No.

Part # / Description / Price

1

84401482 - Body: Front Panel for GM Image image

Pickup Box Front End Panel

MSRP $403.26

GM

Front Panel

6.6 ft box. 5.8 FT BOX. without carbon box. Made of durable material Defines the inner and outer side of the truck's bed, creating a cargo area This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors . Collision parts are designed to help promote proper and safe repair

2

85554869 - Body: Side Panel for GM Image image

Side Panel

MSRP $1,386.95

GM

Side Panel, Right

Without carbon composite box.

2

85654556 - Body: Side Panel for GM Image image

Side Panel

MSRP $1,386.95

GM

Side Panel, Left

Without carbon composite box.

2

84540760 - Body: Truck Bed Panel for GM Image image

Passenger Side Pickup Box Outer Panel

MSRP $1,139.82

GM

Truck Bed Panel, Rear right

6.6 ft box. Side panel. Made of durable material Defines the inner and outer side of the truck's bed, creating a cargo area This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors . Collision parts are designed to help promote proper and safe repair

3

84443356 - Body: Outer Panel for GM Image image

Outer Panel

MSRP $1,276.47

GM

Outer Panel, Left

Without carbon composite box.

3

84443357 - Body: Outer Panel for GM Image image

Outer Panel

MSRP $1,276.47

GM

Outer Panel, Right

Without carbon composite box.

3

84443363 - Body: Truck Bed Panel for GM Image image

Passenger Side Pickup Box Outer Side Panel

MSRP $1,276.47

GM

Truck Bed Panel, Rear right outer

6.6 ft box. Outer panel. Made of durable material Defines the inner and outer side of the truck's bed, creating a cargo area This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors . Collision parts are designed to help promote proper and safe repair

4

84540748 - Body: Anchor Plate for GM Image image

Anchor Plate

MSRP $20.43

GM

Anchor Plate, Left

Without carbon composite box. 6.9 ft box. 8 ft box, dual rear wheels. 8 ft box, single rear wheels. Colorado, side panel. Canyon, side panel. Pickup.

5

23403594 - Body: Truck Bed Panel Bracket for GM Image image

Driver Side Pickup Box Rear Stake Pocket Bracket

MSRP $20.88

GM

Truck Bed Panel Bracket, Left

6.9 ft box. 8 ft box, single rear wheels. Helps align and secure truck bed panel This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Collision parts are designed to help promote proper and safe repair

5

23403595 - Body: Truck Bed Panel Bracket for GM Image image

Passenger Side Pickup Box Rear Stake Pocket Bracket

MSRP $20.88

GM

Truck Bed Panel Bracket, Right

6.9 ft box. 8 ft box, dual rear wheels. 8 ft box, single rear wheels. 5.8 ft box. Helps align and secure truck bed panel This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Collision parts are designed to help promote proper and safe repair

6

85554847 - Body: Upper Bracket for GM Image image

Upper Bracket

MSRP $47.01

GM

Upper Bracket, Left

6.9 ft box. 8 ft box, single rear wheels. With carbon composite box.

8

23403597 - Body: Front Pillar for GM Image image

Front Pillar

MSRP $31.69

GM

Front Pillar, Left

6.6 ft box. Without carbon composite box. 5.8 ft box.

8

23403598 - Body: Front Pillar for GM Image image

Front Pillar

MSRP $30.98

GM

Front Pillar, Right

6.6 ft box. Without carbon composite box. 5.8 ft box.

9

23403603 - Body: Truck Bed Panel Reinforcement for GM Image image

Truck Bed Panel Reinforcement

MSRP $28.85

GM

Truck Bed Panel Reinforcement, Front right

5.8 ft box. 6.6 ft box. Without carbon composite box.

10

23403574 - Body: Wheelhouse Panel for GM Image image

Wheelhouse Panel

MSRP $114.81

GM

Wheelhouse Panel, Left

Without carbon composite box, front.

10

23403575 - Body: Wheelhouse Panel for GM Image image

Wheelhouse Panel

MSRP $114.81

GM

Wheelhouse Panel, Right

Without carbon composite box, front.

12

23403578 - Body: Wheelhouse Panel for GM Image image

Wheelhouse Panel

MSRP $114.81

GM

Wheelhouse Panel, Left

Without carbon composite box, rear.

12

23403579 - Body: Wheelhouse Panel for GM Image image

Wheelhouse Panel

MSRP $114.81

GM

Wheelhouse Panel, Right

Without carbon composite box, rear.

15

84766212 - Body: Power Outlet for GM Image image

Jet Black Pickup Box Accessory Power Receptacle

MSRP $108.36

GM

Power Outlet

8 ft box, dual rear wheels, 110v. 5.8 ft box. 110v. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

15

13556337 - Electrical: 12 Volt Accessory Power Outlet for GM Image image

USB Port

MSRP $102.65

GM

12 Volt Accessory Power Outlet, Center

2022-26 redesign, console base, labeled: 13556337. Center seat-az3, labeled: 13556337.

15

13556338 - Electrical: 12 Volt Accessory Power Outlet for GM Image image

USB Port

MSRP $107.90

GM

12 Volt Accessory Power Outlet

2021-24 without power sliding rear trim. with rear seat media. Console base. labeled 13550123.

15

13568489 - Electrical: 12 Volt Accessory Power Outlet for GM Image image

USB Port

MSRP $105.23

GM

12 Volt Accessory Power Outlet, Center

Console base.

15

85110496 - Electrical: 12 Volt Accessory Power Outlet for GM Image image

Blank Cover

MSRP $43.56

GM

12 Volt Accessory Power Outlet

2022-26 redesign,pro, 120 Volt. 2024-26 wt, custom. 2019-22 2023-26, wt, custom, custom tb.

15

85639763 - Electrical: 12 Volt Accessory Power Outlet for GM Image image

Power Outlet

MSRP $31.13

GM

12 Volt Accessory Power Outlet, Center

2021-24, rear trim, second row buckets. 2022-26 redesign console base. Power outlet. Passenger side. 2020-23 2024-25, PRO. 120 Volt. 2021-24 without power sliding rear trim. 2021-23, console & rear components, 110 Volt.

16

84953212 - Body: Harness for GM Image image

Harness

MSRP $64.28

GM

6.6 ft box. Without carbon composite box. 8 ft box.

17

84396982 - Body: Cargo Lamp for GM Image image

Cargo Area Light

MSRP $94.77

GM

Cargo Lamp

6.9 ft box. 5.8 FT BOX. without carbon box. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

17

84347814 - Electrical: Cargo Area Light for GM Image image

Bed Tailgate Step Light For Multi-Pro

MSRP $150.00

GM

Cargo Area Light

Ideal for low light conditions, the GMC Accessories Tailgate Step Lighting illuminates the truck bed step surface, making it easier to step into or out of the truck bed. Designed, engineered, tested and backed by GMC for vehicles equipped with the MultiPro ...