2021 Silverado Side Bed Cargo Box (Part Number 84256478) intallation instructions?

[Chascarlson]

Hello All;

 

I just received my 2021 Silverado interior side bed cargo boxes and the instruction sheet says to refer to the GM Service Information Accessory Manual for specific instruction for my vehicle.  The cargo box (driver's side & passenger side) each came with a box of parts, not all that intuitive to .  Does anyone have the how to install instructions, please? 

 

Thank you,

 

Chuck

USAF Retired

[jaxcam02]

I would call your dealers service department and ask them to email you pdf instructions 

[Chascarlson]

Thank you.  I watched a GM advertisement YouTube video showing a quick overview.  I think I gained enough knowledge and took several pictures to aid in my installation.  My local dealer is not the friendliest place to visit. 

[JimCost2014]

35 minutes ago, Chascarlson said:

Hello All;

 

I just received my 2021 Silverado interior side bed cargo boxes and the instruction sheet says to refer to the GM Service Information Accessory Manual for specific instruction for my vehicle.  The cargo box (driver's side & passenger side) each came with a box of parts, not all that intuitive to .  Does anyone have the how to install instructions, please? 

 

Thank you,

 

Chuck

USAF Retired

Welcome to the site. Thank you for your service to our country.

 

Here you go.

20_isheets_84256478.pdf

[JimCost2014]

Double post, do not know why.

Edited July 8, 2022 by JimCost2014

[Chascarlson]

Jim,

 

Thank you so very much.

 

Chuck

[JimCost2014]

23 hours ago, Chascarlson said:

Jim,

 

Thank you so very much.

 

Chuck

You are very welcome.

 

Post some pics of the install and your truck.

[Chascarlson]

Just installed the Driver’s side cargo box. Had to modify the topper hold down clamps to get the box to fit.  

[Chascarlson]

[Chascarlson]