Chevy/GMC Rear Underseat Lockbox
SKU: 352-01
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Tuffy does not directly offer home installation services. By selecting professional home installation, you are choosing to work directly with a 3rd party company, Bestek, who will become your point of contact subject to their terms and conditions.
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The purchase of the Product(s) together with installation is powered by the Home Installation option. If you choose to use Home Installation, you will be asked to acknowledge and agree to the Universal Terms and Conditions prior to checkout. All On-Site Services are sold and provided to you by a third party technician that participates in the Bestek network and is certified to service and/or install the Product(s) you have purchased. Bestek and the Home Installation option and its functionality are used under permission from ISR Division Systems, LLC. All rights reserved. ISR Division Systems, LLC is not affiliated with the maker or seller of the Product(s) you have purchased and does not endorse said Product(s).

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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.

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 inch 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

Double or Crew Cab required. Does not fit Regular Cab. No Drilling required. Fastens with original OEM hardware. Foam Liner and Dividers sold separately.

Detailed Specs

SKU: 352-01


Product Type Underseat Lockbox
Description Rear Seat
Color Black


Exterior Dimensions Overall 55.875” L x 10” W x 8.625” H (7” H at the back of the enclosure)
Interior Compartment 55.25” L x 9.875” W x 8.125” H (6.625” H at the back of the enclosure)
2019-2023 Chevrolet Silverado 1500
2020-2023 Chevrolet Silverado 2500 HD
2020-2023 Chevrolet Silverado 3500 HD
2019-2023 GMC Sierra 1500
2020-2023 GMC Sierra 2500 HD
2020-2023 GMC Sierra 3500 HD

Installation Instructions
Marketing Videos
California Residents: WARNING

California Proposition 65

WARNING: Cancer and Reproductive Harm -

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Chevy/GMC Rear Underseat Lockbox
Chevy/GMC Rear Underseat Lockbox - 2019-23 Silverado/Sierra 1500 {'19 New Body Style}; '20-23 2500HD/3500HD; w/ Crew, Extended Cab
Lockboxes,Storage & Security,Truck/SUV Products,Tuffy Security Products,Underseat Lockboxes