2020-2025
2015-2019
2007-2014
2001-2006
Installation Time
(approx) 30 Minutes
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Tuffy Security Products Underseat Lockbox with Combo Lock; 2/3 Length (07-19 Sierra 2500 HD Crew Cab)Find parts that fit my vehicle
Item HG38844
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M-F 8:30A-11P, Sat-Sun 8:30A-9P
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109 Reviews
Our Price
$499.00 each
Ship to: 43215
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Tuffy Security Products Underseat Lockbox with Combo Lock (2/3 Length)
- With a Rigorously Tested and Proven Performance
- Boasts a Corrosion- and Rust-Resistant Composition
- Constructed With 16 Gauge Steel
- Patented Internal Locking Mechanism
- Programmable Combination Lock
- Convenient Storage Solution
- Has a Painless, Mod-Free, and Drill-Less Installation Procedure
- Made to Meet or Exceed Industry-Leading Quality and Safety Standards
- Paired with a Lifetime Warranty Coverage
- Engineered for all 2007-2019 GMC Sierra 2500 HD Crew Cab Models
| Brand | Tuffy Security Products |
| Interior Storage Type | Under Seat Storage |
Description
Secure and Convenient Storage. The Underseat Lockbox With Combo Lock is designed to offer a secure and convenient storage solution for your valuables. Constructed with 16 gauge steel and featuring a patented internal locking mechanism, it provides robust protection against theft. The programmable combination lock allows for personalized security without the need for keys.
Construction and Appearance. This lockbox is engineered to fit perfectly under the seat of your vehicle, utilizing otherwise unused space efficiently. Furthermore, its sleek design integrates seamlessly with the interior, maintaining the aesthetic while adding functionality.
Installation. Designed for easy installation, the lockbox fits directly under the seat of the 2007-2018 Silverado 1500 Crew Cab without requiring any modifications.
Warranty. It comes with a lifetime warranty, ensuring long-term reliability and satisfaction with your purchase.
Application. This Underseat Lockbox With Combo Lock fits all 2007-2019 GMC Sierra 2500 HD Crew Cab Models.
Fitment:
- 2007 GMC Sierra 2500
- 2008 GMC Sierra 2500
- 2009 GMC Sierra 2500
- 2010 GMC Sierra 2500
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2013 GMC Sierra 2500
- 2014 GMC Sierra 2500
- 2015 GMC Sierra 2500
- 2016 GMC Sierra 2500
- 2017 GMC Sierra 2500
- 2018 GMC Sierra 2500
- 2019 GMC Sierra 2500
Tuffy Security Products 340-01-A
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Underseat Lockbox
4.8
Customer Reviews (109)
Oct 5, 2022
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock; Full Length (07-19 Sierra 2500 HD Crew Cab)
2007 - Broach
Installation Time: Afternoon
Lockbox
This lockbox is a great idea for under the rear seat !
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Mar 16, 2025
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (15-25 F-150 SuperCab, SuperCrew)
2023 -
Installation Time: Less than 1 Hour
Great product!
I love this lock box! It’s got decent space and fits my plate carrier, gun belt, helmet, rifle, night vision, and also my battery box. So much room for activities!
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Feb 23, 2025
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (19-25 Sierra 1500 Double Cab, Crew Cab)
2024 -
Installation Time: Less than 1 Hour
Underseat Lockbox
The Tuffy Sercurity Underseat Lockbox is well built and fits perfect. The only problem is that I think it is overpriced.
Fit 5/5
Quality 5/5
Bang For Your Buck 3/5
Dec 18, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Combo Lock (15-25 F-150 SuperCrew w/o Floor Mounted Sony Subwoofer)
2016 Platinum - Zace135
Installation Time: Less than 1 Hour
Perfect fit
Amazing storage box with added security for whatever you may want to lock up. It is a Quality made product. All hardware was included very easy to install.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Nov 24, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (19-25 Silverado 1500 Double Cab, Crew Cab)
2024 LTZ - Underseat
Installation Time: Less than 1 Hour
Under seat lockbox
This is my 2nd box the same problem I had with 1st one is the same I have with the 2nd one the lock is not that sung fit .For security it is easy to pry open.So for a secure lock I Will put a latch and a lock on it
Fit 5/5
Quality 3/5
Bang For Your Buck 3/5
Oct 13, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (19-25 Sierra 1500 Double Cab, Crew Cab)
2021 Elevation - TrumpVance
Installation Time: Less than 1 Hour
Fits great
So the box is awesome. However when I got my package all the hardware was in the box. However so was the paper that said what the code was to unlock it. Lucky I just tried all zeros and it unlocked them. But that’s all I have to say bad and I’m not sure if that’s on this company or the manufacture of the box. Also I ordered foam from Amazon I have coming to line it with foam you’ll need it for sure. Also added led light strips to my box so I can see in it.
Fit 5/5
Quality 5/5
Bang For Your Buck 4/5
Sep 28, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (15-25 Canyon Crew Cab)
2021 AT4 - GuyWhite
Installation Time: Less than 1 Hour
Lockable cab storage for Colorado
This is one of those products that just works well and solves the problem. There's no secure storage anywhere in the cab of the Colorado, until now! Relatively easy to install, fits perfectly, offers plenty of useful space, and is basically invisible to everyone. It's very well constructed and actually improves the looks of the second row by providing seamless support for the rear seat. The 60/40 split locking cover is very useful and matches the seat split for easy access. I had to purchase a T47 Torx head bit to get the factory seat support bracket out, but that's it. It's a little bit spendy but well worth it.
Fit 5/5
Quality 5/5
Bang For Your Buck 4/5
Jul 1, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (17-25 F-250 Super Duty SuperCab)
2020 - GaD
Installation Time: Less than 1 Hour
gun safe
ez to install great fit i have had it for three year s now
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Mar 16, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (19-25 Silverado 1500 Double Cab, Crew Cab)
KevinCow
Installation Time: Less than 1 Hour
Under seat lockbox
Fits perfectly under my back seat on my 2021 Chevy Silverado and easy install and now able to lock things up .
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Mar 9, 2024
Review shared from Tuffy Security Products Underseat Lockbox with Keyed Lock (19-25 Silverado 1500 Double Cab, Crew Cab)
2022 LTZ - Viking874
Installation Time: Less than 1 Hour
Tuffy Underseat lockbox
Excellent quality. Excellent fit. Easy installation.
Fit 5/5
Quality 5/5
Bang For Your Buck 5/5
Questions & Answers
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