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2020 Body Builder Manuals

Body Builder Manuals,

The Full set of the Body Builder Manuals for the 2020 "ALL NEW " Chevrolet Silverado and GMC Sierra Full Size HD Trucks are now available for your review. 




For Information on relocating the roof mounted antenna on Express/Savana Cut-away vans, please refer to UI Bulletin #143.


To view the PDF files on this website, you will need to download the latest version of Adobe Acrobat Reader.

NTEA Work Truck Show/Office Closure

The 2019 NTEA Work Truck Show is just around the corner and the General Motors Upfitter Integration team will be right there ready to provide you with the support and assistance you need.  As a result, our offices will be closed the week of March 4th through March 8th.  Please submit your inquiries and requests via our Contact Us form and we will respond to them in the order they were received when we return to the office.

Thanks and hope to see you at the show.



Special Equipment option 5F9 Rear Camera Ready is now available for ordering...for information pertaining to the new option and other adding a camera details please refer to UI Bulletin 127g.

Winter Holiday Office Hours

The Winter Holidays are just around the corner and as in years past, General Motors offices will be closed in celebration of the holidays.  Upfitter Integration offices will close as well, beginning Monday December 24th, 2018 through Tuesday January 1st, 2019.  We will return to the office Wednesday January 2nd, and  will address your inquiries and requests in the order they were received at that time. Please have an enjoyable and safe holiday.


Looking for Bulletin 124x?

Bulletin 124 is currently at revision level “j” …the (x) reference was intended to indicate an undefined revision level. For the information on installing the VYU jumper harness, Please see UI Bulletin 124j located under the Technical Bulletins tab  - select SHOW ALL BULLETINS and locate 124(j).

Attention Snow Plow Installers…

A bulletin (#147) has just been posted to our website. It contains information regarding power provisions for snow plows and how to install the fuse kit to enable the power provisions. Please refer to this bulletin when installing a snow plow on the ALL NEW Full-size Silverado and Sierra pickup trucks.