Under Seat Lockbox - 2019-2020 GM Trucks
SKU: 352

Under Rear Seat Lockbox - GM Crew Cab Truck  - Tuffy
  • Over 3500 Cubic inches of lockable storage space
  • Exclusive 10 tumbler double bitted lock with built in weather seals
  • Pry-Guard locking system featuring 1/8" thick welded steel components
  • Stealthy design is hidden under the seat from prying eyes
  • Weather resistant lid design incorporates an exclusive hinging system with built-in lid stop
  • Welded 16 Gauge steel construction with durable texture powder coat finish.
  • Added security with Pin-Lock hinge design
  • Innovative mounting system permits removal from vehicle in seconds from inside the box when unlocked without the need for tools
  • Mounting hardware provided
  • Quick and easy install, no drilling
  • Chamfered corners are incorporated into the design for easier passenger access


Part #: 352

Colors: Black

Exterior Dimensions: Overall 55.875”L x 10”W x 8.625”H (7”H at the back of the enclosure)

Interior Dimensions: 55.25”L x 9.875”W x 8.125”H (6.625”H at the back of the enclosure)

Shipping Weight: 51 lbs.

Product Description

The Tuffy lockbox mounts under the rear seat in the GM Crew Cab and Double Cab pickup trucks. This high security 16 gauge steel security lockbox has a full width formfitting design creating over 3500 cubic inches of lockable storage. Easily access your secured contents by flipping up the corresponding lid under your 60/40 split bench seat. The unique design allows the full width to be used to stow firearms or other long items.

Feel confident securing your gear using Tuffy’s Pry-Guard Locking System with a 10 tumbler double bitted security lock with built in weather seals. Mounts inconspicuously under the seat out of sight of would be thieves with chamfered corners for easier passenger access.

Declutter your space by quickly and easily installing this Tuffy lockbox using the factory hardware without drilling. When you need additional floor space, simply remove the lockbox in seconds without the need for any tools. The innovative mounting system can only be accessed from inside the lockbox.



  • Chevy Silverado 1500 Double and Crew Cab Fourth Generation 2019-Current
  • GMC Sierra 1500 Double and Crew Cab Fourth Generation 2019-Current
  • (Does not fit Regular Cab)


No Drilling required. Fastens with original OEM hardware. View Assembly Instructions PDF
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