HomeBody > Truck BoxDorman 999-996 Truck Bed Floor Support
Part #: 999-996

Dorman 999-996 Truck Bed Floor Support

⚙️ 43 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD
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Durable Truck Bed Floor Support for Chevrolet and GMC Trucks

The Dorman 999-996 truck bed floor support is designed to provide reliable reinforcement for your Chevrolet Silverado and GMC Sierra trucks. Engineered to restore structural integrity, this part ensures your truck bed maintains its strength and durability under heavy loads.

Key Features of the Dorman 999-996 Truck Bed Floor Support

  • Includes 5 bed crossmembers for comprehensive floor support
  • Comes with 10 M6 bolts and 8 M12 bolts for secure assembly
  • Compatible with Chevrolet Silverado 1500, 2500 HD, 3500 HD models
  • Fits GMC Sierra 1500, 2500 HD, 3500 HD trucks
  • Constructed to meet OEM specifications for fit and function

Detailed Description of the Truck Bed Floor Support

This truck bed floor support kit from Dorman features five robust crossmembers designed to reinforce the truck bed floor of Chevrolet Silverado and GMC Sierra models. The included M6 and M12 bolts provide the necessary hardware to secure the crossmembers firmly in place, ensuring a stable and durable foundation. The part number 999-996 corresponds to a direct replacement solution that helps maintain the structural integrity of your truck bed, especially important for heavy-duty applications and frequent hauling.

Common Applications and Problem Solving

  • Restores sagging or weakened truck bed floors
  • Prevents further damage caused by rust or corrosion
  • Supports heavy loads to avoid bed floor deformation
  • Reinforces truck bed structure after collision repairs
  • Improves overall durability for work and utility trucks

Installation Notes and Tips

When installing the Dorman 999-996 truck bed floor support, ensure all old components are removed and the mounting surfaces are clean and free of debris. Use the provided M6 and M12 bolts to secure each crossmember tightly, following torque specifications recommended by the vehicle manufacturer. Proper alignment of the crossmembers is critical to maintain the truck bed’s structural integrity and to avoid premature wear.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards, providing dependable performance and fitment. The 999-996 truck bed floor support undergoes rigorous quality control to ensure durability and reliability. Please refer to Dorman’s official warranty policy for specific coverage details.

BrandDorman
Part Number999-996
Package Contents5 bed crossmembers; 10 m6 bolts; 8 m12 bolts

This part fits 43 vehicles. Search below:

YearMakeModelBed TypeBed LengthPositionNotes
2014ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2014ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2014ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2014GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2014GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2013ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2013ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2013ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2013GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2013GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2012ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2012ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2012ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2012GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2012GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2011ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2011ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2011ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2011GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2011GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2010ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2010ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2010ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2010GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2010GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2009ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2009ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2009ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2009GMCSierra 1500Fleetside8' 1" Foot BedN/ABed Crossmembers
2009GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2009GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2008ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2008ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2008ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2008GMCSierra 1500Fleetside8' 1" Foot BedN/ABed Crossmembers
2008GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2008GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)
2007ChevroletSilverado 1500Fleetside8' 1" Foot BedN/A
2007ChevroletSilverado 2500 HDFleetside8' 1" Foot BedN/A
2007ChevroletSilverado 3500 HDFleetside8' 1" Foot BedN/AFits vehicles with Single Rear Wheel (SRW)
2007GMCSierra 1500Fleetside8' 1" Foot BedN/ABed Crossmembers
2007GMCSierra 2500 HDFleetside8' 1" Foot BedN/ABed Crossmembers
2007GMCSierra 3500 HDFleetside8' 1" Foot BedN/Aw/Single Rear Wheel (SRW)

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15277659

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.