Technical Bulletins

Technical Bulletins provide up-to-date information on issues that come up during the model year. These issues require a more immediate distribution of technical information than the annual Body Builder Manuals can provide. The need for a technical bulletin may be driven by one of the following:

  • Mid-year design change to the vehicle that affects upfitter modifications
  • Information from a GM Service Bulletin that specifically affects upfitter modifications
  • Frequent submissions involving one particular issue that many upfitters encounter
Light Duty
Vehicles include the Canyon/
Colorado, Sierra/Silverado,
Express/Savana, Tahoe/Yukon/
Suburban, Uplander, etc.
Medium Duty
Vehicles include the
Top Kick/Kodiak, the
W, T, N, and F-Series,
etc.
Passenger
Vehicles include the
Caprice, Impala, Malibu,
and Volt
To find applicable bulletins select the appropriate information from the pull down menus for a specific search.
  • Select a Year

  • Show All Bulletins

File

Number

Date Posted

Description


181

09/22/2021

Out of Park Signal- 2021 and Beyond Chevrolet and GMC Full-Size SUVs


180

b

06/18/2021

Information on Obtaining Techline Calibrations for Law Enforcement and Government Vehicles


179

c

08/30/2021

NEW Wide Body Sideview Mirrors - Silverado MD Trucks


178

b

04/19/2021

Adding Remote Vehicle Start (BTV) - 2021 and beyond Tahoe PPV/SSV


177

03/08/2021

Adding Exhaust Brake (K40) and/or Upfitter Switches (9L7) - MD Trucks


176

02/02/2021

Upfitter Provisional Out of Park" Signal"


175

01/11/2021

Back-up Alarm Installation (8S3)


174

12/02/2020

Rear Camera Inoperative - Camera kit 5N5


173

b

03/02/2021

Installing Ground Straps (UN9) 2021 Tahoe PPV


172

11/04/2020

Mid-Size Pickup Box Removal / FMVSS/Component Information Resource


171

03/25/2021

Removal/Deletion Front/Side Fuel Tank 2020 HD Chassis Cab


170

07/28/2020

Camera Views go Blank with Tailgate Removed


169

05/28/2020

Information on Removing Protective Film Bumper Covers Upon Delivery of Vehicle


168

05/15/2020

Box Removal with Blind Zone Alert (UKC) and Park Assist (UD5/UD7)


167

b

10/26/2020

HD Pickup Box Removal / ZW9 Capped Fuel Filler Assembly Components


165

b

10/26/2020

Fuel Filler Elbow Assembly Service Body Installation MD Trucks


164

03/19/2020

Overhead Auxiliary (Upfitter) Switches (RPO UEH) MD Trucks


163

03/27/2020

Fuel Tank strategy and Auxiliary Tap Upfit interface MD Trucks


162

02/27/2020

Rear Chassis Electrical Harness attachments


161

b

01/16/2020

Next Generation (New Body Style) Snow Plow Jumper Harness Install - Preliminary


160

b

07/16/2020

Power Take Off (PTO) Operating Description and Application Guide - NEW Body Style Only


159

09/04/2019

Cap-less Fuel Fill Cover


158

08/27/2019

Adding an After-Market Trailer Brake Controller- MD Trucks


157

b

01/05/2021

Roof Beacon Wiring Provisions for 2019 to present Full Size Pick Up and Chassis Cab Models


156

d

08/13/2019

DEF Tank Relocation


155

b

01/20/2021

Upfitter Circuit Provisions w/o Upfitter (AUX) switches (preliminary)


154

07/19/2019

Upfit Body Mounting / Chassis Wiring Harness Routing - 2020 and beyond 3500 HD Chassis Cabs


153

c

06/07/2019

Installation of Upfitter (AUX) Switches (9L7) components Preliminary


152

g

01/14/2020

Adding or Installing a Rearview Camera - 2019 -present Chevrolet Silverado and GMC Sierra Models


151

09/21/2021

Adding or Installing a Rearview Camera Chevrolet Express/GMC Savana Cut-away Vans


150

01/27/2021

Adding or Installing a Rearview Camera – MD Trucks


149

b

04/02/2019

Converting Dual Fuel Tank (NSQ) to a Single Fuel Tank System (N2L/NVK)


148

d

08/21/2019

Upfitter (Aux) Switches (RPO 9L7)


147

b

10/28/2020

Snow Plow (VYU) & Upfitter (AUX) Switch (9L7) Power Provisions


146

c

02/12/2019

Partial Exhaust System Removal to enable installation of a PTO.


145

06/07/2018

Removal/Deletion - Rear Fuel Tank


144

02/21/2018

Service Body Remote Door Lock/Unlock Switch – Wiring Provisions RPO WRF


143

10/30/2017

Relocating Roof Mounted Antenna


142

b

08/22/2018

Diesel Particulate Filter [DPF] Manual Regeneration [cleaning]


141

b

08/22/2018

Fuel Fill Tube Repositioning


140

d

07/21/2021

UV Protective covers on Fuel Tanks Components


139

03/22/2017

Fleet Key Option - Adding Keys / Converting


138

b

05/03/2018

Rear Axle Vent Hose


137

b

11/01/2017

Upfitter Junction Block - Accessory Equipment Wiring (RPO 9L7)


136

01/09/2017

Gasoline and Diesel Engine Liquid Cooling System


135

c

10/27/2016

Turn Signals Engage When Depressing the Brake Pedal


134

10/07/2016

Guidelines for Diesel Fuel Filler Neck Assembly & Installation


133

09/07/2016

Rear Spring Shackle Bolt Length


132

06/14/2016

Air Deflector Usage/Installation


131

c

03/01/2019

Elevated Engine Coolant/Operating Temperatures with Snow Plow Mounted


130

b

08/31/2016

Removal of Wheel Washers Prior to Installation of Outer Dual Rear Wheel


129

c

01/29/2020

Rear Chassis Electrical Upfitter Connections


128

b

10/22/2015

One or more Exterior Lighting Functions Inoperative - Headlamps High/Low Beam, Hazard Lamps, Park Lamps, Stop Lamps


127

q

08/13/2019

Adding/deleting a Rear View Camera


126

07/21/2015

Optimizing Vehicle Trim Height


125

04/13/2015

Relocation of Electrical Components/ Devices


124

k

11/07/2019

(124x) - Radio HVAC IPC Blank Out When Operating A Snow Plow


123

c

05/22/2020

Roof Beacon (TRW) Switch Wiring Location/Access


122

b

04/20/2018

CHMSL/Cargo Lamp Wiring For Aftermarket Bed Cap Topper


121

b

04/02/2015

Transport Mode Message/Battery Light Flashing


120

g

01/02/2019

Power Take Off (PTO)Operating Description and Application Guide


119

08/14/2014

Info - Radio Telephone/Mobile Radio (Transceiver) Installation and Troubleshooting Guidelines


118

c

02/06/2015

Upfitter Configurable Auxiliary Circuits (9C1/5W4)


117

c

06/16/2017

Improper Engine Block Heater (Option K05) Usage - Continuous Power


116

b

12/06/2016

Snow Plow Lamp Activation


115

f

05/04/2018

Upfitter Circuit Provisions


114

c

03/01/2017

Winter Cover Usage For Vehicles Equipped With Diesel Engines


113

c

07/09/2015

Rear Lighting Junction Block Connections


112

b

12/11/2014

Cooling System Filling Procedure For Vehicles Equipped With an Rear Auxiliary Heater


111

08/12/2013

Auxiliary Power Connections


110

n

02/06/2019

Upfitter Auxiliary Switches (RPO 9L7)


109

d

03/13/2014

After-market Trailer Brake Controller Harness


108

d

05/18/2016

Aftermarket ALDL or DLC Interface Devices Causing Multiple Issues


107

d

06/06/2017

Removing/Re-Installation of Door Water Deflectors


106

c

06/06/2014

Fuel Cap Tether Strap


104

b

07/14/2015

Accessory Drive Equipment Loads for Diesels


103

c

02/25/2014

Service, Tool or Utility Box Sagging, Mis-Aligned


102

d

06/02/2016

Auxiliary Battery Connections


101

c

06/22/2012

Installation of Non-GM Approved Aftermarket Products on the Chevrolet Volt


100

b

09/11/2014

Properly Maintaining Vehicles in Dealer Inventory


99

c

06/06/2014

Upfitter Integration Safety Belt & Buckle Due Care Handling


98

b

04/21/2016

Service Body Mounting Guidelines


97

b

06/13/2014

HYRAIL" FGAWR Upgrade"


96

03/22/2011

Information on Seat Belt Changes 2010 to 2011 and Identification Guide


95

c

04/19/2018

Important Vehicle Labeling information


94

c

06/06/2014

Guidelines for installing Body mounts in GMT610 Cutaways


93

02/28/2011

External Radio Antenna Mounting Location Recommendation


92

09/24/2010

Generator Not Charging Properly


91

07/20/2010

Guidelines for Installing PRVs in GMT610 Cutaways


90

r

05/03/2018

CC Fuel Filler Assembly Service Body Installation Guide


89

c

06/07/2017

Installation of Electrical Aftermarket Accessories on 2-Mode Hybrid Full Size Trucks


88

10/05/2012

Information on Body Control Module(BCM) Grounds


87

06/26/2009

Malibu-Installation of Non-GM Approved Aftermarket Products


85

c

06/07/2018

RPO ENC, Provisions for a Rear Auxiliary Heater


83

c

04/19/2018

HyRail Upfit Applications


82

f

01/26/2021

Fast Idle - RPO UF3


81

d

04/25/2018

Service Body Rear Lighting Options (including LEDs)


80

c

09/15/2014

Power Take Off (PTO) Subsystem Operating Description and Application Guide


79

01/07/2013

Power Take Off (PTO) Features (New 900)


51

01/27/2021

Professional Vehicle - XT5 Steering Learn Procedure


50

12/27/2020

Profession Vehicle - XT5-Hearse and Limo EBCM Calibration part numbers


49

01/27/2021

Professional Vehicle - Hearse and Limo exterior molding color specifications


48

10/29/2018

2017 MY XTSPRO Fuel Economy Ratings and Emission Documentation


47

08/20/2018

Professional Vehicle - 2018 XTS B9Q Funeral Coach Excessive Current Drain


46

08/20/2018

Professional Vehicle - Rear Applique Assembly (with Rear Camera) for 2018 XTS B9Q Funeral Coach


45

08/20/2018

Professional Vehicle - 2018 MY XTSPRO Fuel Economy Ratings and Emission Documentation


44

08/20/2018

Professional Vehicle - 2017 MY XTSPRO Fuel Economy Ratings and Emission Documentation


43

08/20/2018

2016 XTSPRO Build Out and 2017 Start Up


43

08/20/2018

Professional Vehicle - 2016 XTSPRO Build Out and 2017 Start Up


42

08/20/2018

Professional Vehicle - MY 2016 XTSPRO Fuel Economy Ratings and Emission Documentation


41

08/20/2018

Professional Vehicle - Updated CMC Converter Guidelines Manual


40

08/20/2018

Professional Vehicle - 2015 XTSPRO Build Out and 2016 Start Up


39

08/20/2018

Professional Vehicle - Vehicle Labeling Clarifications


38

08/20/2018

Professional Vehicle - New Alignment Specifications for W30 Extended Sedan


37

08/20/2018

Professional Vehicle - New Underbody Braces on 2015 XTSPRO Vehicles


36

08/20/2018

CMC Export Contact at IFS


35

08/20/2018

MY 2015 XTS_PRO Fuel Economy Ratings and Emission Documentation


34

08/20/2018

Overseas Sales Requests and International Fleet Sales (IFS)


33

08/20/2018

Professional Vehicle - Corrected GVWR/GAWR incomplete vehicle labels on Manufacturer’s Information and Incomplete Vehicle Documentation


32

08/20/2018

Professional Vehicle - UPDATE – 2014 XTS_PRO Order Cutoff and 2015 Start Up


31

08/20/2018

Updated CMC Converter Guidelines Manual


30

08/17/2018

Oshawa Down Weeks; 2014 MY Order Cutoff and 2015 MY Order Start Dates


29

08/17/2018

Electrical System Requirement for V4U, B9Q, W30 & B05


28

08/17/2018

Rear Vision Camera Kit for 2015 XTS B9Q Hearse


27

08/17/2018

Mercury Information Label


26

08/17/2018

CMC Order Processing


25

08/17/2018

2014 XTSPRO Production


24

08/17/2018

XTS Professional Vehicle VINs


23

08/17/2018

CMC Export Contact


22

08/17/2018

MY 2014 XTS Fuel Economy Ratings and Emission Documentation


21

08/17/2018

Contact Information Change


20

08/17/2018

Cadillac XTS ECS Programing Process


19

08/17/2018

2014 MY Oshawa Build Schedule


18

08/17/2018

Cadillac PV Wheel Alignment Specifications


17

08/17/2018

Cadillac PV Paint on B9Q Chassis


16

08/17/2018

2013 MY Ordering Cutoff and 2014 MY Ordering Date


15

08/17/2018

Emissions RPO codes


14

08/17/2018

Math Data Request


13

08/17/2018

Cadillac Master Coachbuilder Converter Guidelines Manual


12

08/17/2018

MY 2013 XTS Fuel Economy Ratings and Emission Documentation


11

08/17/2018

FINAL CMC Converter Guidelines Manual


10

08/15/2018

Escalade Product Portfolio and Color Chart


9

08/15/2018

Canadian Export


8

08/15/2018

Revised CMC Policy & Procedure Manual


7

08/15/2018

GM Tool Usage Letter


6

08/15/2018

XTS Parts and Supplier Contact


5

08/15/2018

CMC Export Contact


4

08/15/2018

XTS Interior and Exterior Colors Specific PV Colors


3

07/27/2018

XTS Interior and Exterior Color samples


2

07/27/2018

CMC Converter Guidelines Manual


1

07/27/2018

Revised CMC Policy & Procedure Manual

©2021 gm upfitter integration

|

Disclaimer

|

privacy statment