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Dorman 999-996 Truck Bed Floor SupportOE Quality 60-Day Returns
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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Dorman 999-996 Truck Bed Floor Support

Restore the structural support under the truck bed without replacing the entire bed assembly. This Dorman OE FIX kit addresses rusted or failed bed crossmembers by allowing targeted replacement of the floor supports, helping reduce repair cost on affected Chevrolet Silverado and GMC Sierra trucks.

  • OE FIX solution for truck bed floor support repair
  • Addresses rust-related failure in bed crossmembers
  • Direct repair approach for Chevrolet Silverado and GMC Sierra bed structures
  • Built for 2007-2014 Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD SRW applications
  • Also compatible with 2007-2014 GMC Sierra 2500 HD, 2007-2014 Sierra 3500 HD SRW, and 2007-2009 Sierra 1500 bed crossmember applications
  • Part number 999-996 for streamlined lookup and ordering

Application Details

Fits 2007-2014 Chevrolet Silverado 1500, N/A. Fits 2007-2014 Chevrolet Silverado 2500 HD, N/A. Fits 2007-2014 Chevrolet Silverado 3500 HD, N/A, with Single Rear Wheel (SRW). Fits 2007-2014 GMC Sierra 2500 HD, N/A, Bed Crossmembers. Fits 2007-2014 GMC Sierra 3500 HD, N/A, with Single Rear Wheel (SRW). Fits 2007-2009 GMC Sierra 1500, N/A, Bed Crossmembers.

What It Helps Repair

  • Rusted or weakened truck bed crossmembers
  • Loss of bed-floor structural support
  • Corrosion damage that would otherwise lead to full bed replacement
  • Bed flex or instability caused by failed supports
  • Costly body repair on Silverado and Sierra truck beds

Installation Notes

Inspect the bed structure and surrounding mounting points before installation. Confirm vehicle configuration and notes, especially SRW applications and bed crossmember-specific fitment, before ordering. Use the included M6 and M12 bolts as specified for the repair procedure. Verify alignment of the replacement supports during installation to maintain proper bed fit and load support.

Quality Assurance

Dorman develops OE FIX repair solutions that address common failure points with targeted replacement parts. Part number 999-996 is engineered for the listed Chevrolet Silverado and GMC Sierra applications and cross-references 15277659 for the same application.

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.

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