Will Extang EX93450 Fit 2018 GMC Sierra 1500 6.5' Bed With Low Profile Toolbox?
Updated 10/27/2025 | Published 03/02/2025
Question:
I have a 2018 GMC SIERRA 1500 Denali / 6.2 liter with a low profile tool box on it with latches on front of it. Looking for a protective cargo cover. The one you show is for a standard toolbox. Do you know if it will work on my truck and is it something I can install or need to have it done. Live in Sulphur La.
asked by: Mitch R
Expert Reply:
Hello Mitch, thanks for reaching out. The Extang Trifecta 2.0 Soft Tonneau Cover - Toolbox Edition # EX93450 will fit your 2018 GMC Sierra 1500 with the 6-1/2' bed. It will work with pretty much any toolbox between 18" and 20" wide, so as long as your toolbox falls within this range, it will fit and work well for protecting your cargo from the elements.
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Product Page this Question was Asked From
Extang Trifecta 2.0 Soft Tonneau Cover - Toolbox Edition - Folding - Vinyl
- Tonneau Cover
- Fold-Up - Soft
- Tool Box Compatible
- Opens at Tailgate
- Tailgate Lock
- Standard Profile - Top of Bed Rails
- Vinyl
- Vinyl Grain
- Extang
more information >
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Jesse M.
10/27/2025
Hey Mitch, how did the Extang Trifecta 2.0 cover work out with your low-profile toolbox on the Sierra? It’d be great to hear if the fit and coverage met your expectations. Your update could make it easier for others with a similar setup.