More News


Upfitter Switch (9L7) Service Parts Retrofit Kits

It has recently discovered that there is a problem with the list of contents for the Upfitter SERVICE PARTS retrofit switch “kits” for vehicles that were not ordered or built with the 9L7 option. The discrepancy has been corrected and new part numbers are being generated.  The kits are temporarily on “hold” until they can be properly assembled with all the components required to perform the retrofit.  Stay tune for updates coming soon.  This situation does impact the kits that are shipped with the vehicle when the 9L7 option was ordered.



*168 Box Removal - With Blind Zone Alert (UKC) and Park Assist (UD5/UD7)

*167 HD Pickup Box Removal / ZW9 Capped Fuel Filler Assembly Components 

161 - Next Generation Body Style Snowplow Jumper Harness Install

165 - Fuel Filler Elbow Assembly `Service Body’ Installation MD
164 - Overhead Auxiliary (Upfitter) Switches (RPO UEH)
163 - Fuel Tank strategy and Auxiliary Tap Upfit interface MD
162 - Rear Chassis Electrical Harness Attachments – 3500 Chassis Cabs


Upfitters looking for various model option information, vehicle weights (both curb and available payload) should use the Online Order Guide accessible from Resource page of the GM Fleet website. Select the vehicle application and Click on `Model and Option Weights' located in the lower left corner on specific model pages. (



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.

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.