Bulletin No.:

Service Bulletin

Date:

13-00-89-008B
August, 2019

INFORMATION
Subject:

GM Wiring Repair Strategy Information

Models:

2009-2020 GM Passenger Cars and Trucks — Excluding Chevrolet Low Cab Forward
Trucks
2019-2020 Chevrolet Silverado 4500HD, 5500HD, 6500HD
2009-2020 Holden Vehicles

Attention: This Bulletin applies to any of the above models that may be Export from
North America vehicles.
This Bulletin has been revised to add Model Years 2016-2020, add MY2009-2020 Holden
Vehicles, add an Important statement regarding the phasing out of the service terminals,
tray, core and insulation crimps, communicate Wiring, Connector and Terminal repair
changes, change CCA Parts to EPC, add a Coaxial Cable Repair section, add the process and
graphics to find the part number in SI and the process and graphics to find the part in the
Electronic Parts Catalog (EPC). Please discard Corporate Bulletin Number 13-00-89-008A.

Overview
Important: For newer GM Cars and Trucks, the
service terminals, tray, core and insulation crimps
are being phased out. The process to repair
machine crimped terminals cannot be duplicated
reliably in the Service environment and is no longer
a viable repair option. The use of a terminated lead
or a Pigtail (8-way or less connector) is the only
approved repair method going forward.
This bulletin provides a resource to find information,
processes and parts in order to perform wiring, terminal
and connector repairs.

Global Wiring Repair
Wiring Repair Strategy
The following is the global wiring repair strategy:
• Major Harnesses (Body, Engine, Instrument
Panel, Forward Lamp, etc.) are to be repaired
whenever possible.
• Minor Harnesses (door, seat, steering column,
etc.) are serviced as assemblies.

Copyright 2019 General Motors LLC. All Rights Reserved.

Strategy Consists of Four Different Repairs
The repairs consist of the following:
• Wire to Wire Repair
• Connector Assemblies (Pigtails)
• Connector Kits
• Terminated Lead Repair
This strategy was established to reduce the number of
individual part numbers needed to service GM vehicles,
as even small harnesses can have many different part
numbers for the individual connectors and terminals.
When new terminals or connectors are released within
the major harnesses they will be serviced through the
release of connectors, terminated leads, pigtails, kits,
etc., and are available through EPC.
For individual connectors that are 8-way or less, a fully
populated pigtail with the correct DuraSeal splice will
be available. For connectors that are 9-way or more,
the individual parts will be available via connector kits,
DuraSeal splices and terminated leads.

Page 2

August, 2019

Wiring Systems and Power
Management — Navigation — Repair
Instructions
Navigating to Repair Instructions
To navigate to the Repair Instructions section in Service
Information, enter a VIN then click ‘Next’. Go to >
Power and Signal Distribution > Wiring Systems and
Power Management > Repair Instructions
OR
To navigate to the Repair Instructions section in Service
Information without a VIN, Go to Year > Make > Model
> ‘Next” > Service Manual > Power and Signal
Distribution > Wiring Systems and Power Management
> Repair Instructions.
At the Repair Instructions screen a search can be
performed for a specific repair, for example: Flat Wire
Repair, Wire to Wire Repair etc.
Repair Instructions
The Repair Instructions contain the following types of
wiring repair information:
• Flat Wire Repairs
• Fold Over Wire Repair
• Serial Data Circuit Wiring Repairs
• High Temperature Wiring Repairs
• Heated Oxygen Sensor Wiring Repairs
• Wire to Wire Repair
• Splicing Twisted or Shielded Cable
• SIR/SRS Wiring Repairs
• Terminal Removal
• Serial Data Circuit Wiring Repairs (consists of the
following repairs):
– GMLAN Repairs
– GMLAN Connector Terminal Repairs
– GMLAN Wire Repairs
– Media Oriented Systems Transport (MOST)
Wiring Repair
– Ethernet Wiring Repair
Coaxial Cable Repairs
The coaxial (coax) cable repair strategy uses coaxial
cables, connectors and jumpers to repair coaxial
cables. The intent is to install the new service cable in
the vehicle, with removal of the old cable not being
necessary.
The following are several repair scenarios:
• New cables, jumpers, and connector housing are
required.
• Only new cables are required while it is possible to
reuse the existing connector housing in vehicle. A
jumper may or may not be needed.

•
•

Bulletin No.: 13-00-89-008B

Only new connector housing are required, while it
is possible to reuse the existing cable in the
vehicle.
A new cable would need to be installed from
source to destination and by-pass the inline
connector in some cases when an inline
connector is unrepairable. For example: a cracked
male end of a 1-way connector.

Antenna Coax Repair Kits
Different kits are available to repair some antenna
coaxial cables. Refer to Bulletin 17-NA-346
Information on Antenna COAX Repair Kit
Availability in SI for Kit part numbers.

Obtaining Service Parts Using SI
and EPC
Navigating to Connector End Views in SI
Go to > Service Manual > Power and Signal
Distribution > Wiring Systems and Power Management
> Component Locator > Master Electrical Component
List > Connector End View (last column on the right)
At the Master Electrical Component List a search can
be performed for the electrical component being
serviced, for example the: K20 Engine Control Module.

Bulletin No.: 13-00-89-008B

August, 2019

Page 3

Finding the Correct Service Part Number in SI —
8-Way or Less Connectors

5378389

B75C Multifunction Air Intake Sensor — Connector
End View 8-Way
The Connector End View provides a view of the
connector and the connector part information, which is
just below and to the left of the Connector End View
drawing.
The Connector End View is presented two ways — the
legacy format typically associated with TIFF
viewer-supported graphics and the new format typically
associated with the new CGM viewer-supported
graphics. Connector dissassembly videos may be
provided to assist with repairs.
The Service Connector part number will be the part
number that needs to be ordered, while the OEM
Connector part number is what the vehicle should have
been built with. If the connector Description indicates it
is an 8-way or less, the part number will be a pigtail.
Tables Following Connector End View
The Terminal Part Information Table following the
Connector End View provides useful information
including the Diagnostic Test Probes, Terminal
Removal Tools and Terminated Leads to use.
The second Table (Code and Component Name Table,
if Titled) provides the Pin, Size, Color, Circuit, Function,
Terminal Type ID and Option.

Page 4

August, 2019

Bulletin No.: 13-00-89-008B

Terminal Part Information
Terminal
Type ID

Terminated
Lead

Diagnostic
Test Probe

Terminal
Removal Tool

Service Terminal

I

Not
Required

J-35616-64B
(LT BU)

No Tool Required

Not Required

Tray
Name

Core
Crimp

Insulation
Crimp

Not
Required

Not
Required

Not
Required

B75C Multifunction Intake Air Sensor
Function

Terminal
Type ID

Option

6289

Induction Air Temperature Sensor Signal

I

—

I
I
I

LFV
LKN
LTG

Pin

Size

Color

Circuit

1

0.5

WH/BU

2

0.5
0.5
0.5

BU/RD
BK/YE
GY/RD

460
6014
3053

Engine Control Sensors 5 Volt Reference (1)
Barometric Pressure Sensor Low Reference
Turbo Intake Pressure Sensor High Reference
Bank 1

3

0.5
0.5

BK/YE
BK/VT

548
2760

Engine Control Sensors Low Reference (1)
Intake Air Temperature Sensor Low Reference

I
I

LFV
LTG/LKN

4

0.5
0.5

BU/GY
YE

433
3054

Barometric Pressure Sensor Signal
Turbo Intake Pressure Sensor Signal Bank 1

I
I

LKN
LTG/LFV

5

0.5

VT/BU

5294

Powertrain Main Relay Fused Supply 5

I

—

6

0.5

GN/WH

492

Mass Air Flow Sensor Signal

I

—

7

0.75

BK/WH

151

Signal Ground

I

—

8

0.5

BN/GY

4008

Humidity Sensor Signal

I

—

Bulletin No.: 13-00-89-008B

August, 2019

Page 5

Finding the Correct Service Part Number — 9-Way
or More Connectors

5379076

K9 Body Control Module X1 — Connector End View
26-Way
The Connector End View provides a view of the
connector and the connector part information, which is
just below and to the left of the Connector End View
drawing. A Click Image For Video arrow will be shown
under the Connector End View if it is available.
The Connector End View is presented two ways — the
legacy format typically associated with TIFF
viewer-supported graphics and the new format typically
associated with the new CGM viewer-supported
graphics.
The Service Connector part number will be the part
number that needs to be ordered, while the OEM
Connector part number is what the vehicle should have
been built with. If the connector Description indicates it
is a 9-way or more it will be a connector kit.
Tables Following Connector End View
The Terminal Part Information Table following the
Connector End View provides useful information
including the Terminated Lead, Diagnostic Test Probe,
Terminal Removal Tool, Service Terminal, Tray Name,
Core Crimp and Insulation Crimp to use.
The second Table provides the Pin, Size, Color, Circuit,
Function, Terminal Type ID and Option.

Page 6

August, 2019

Bulletin No.: 13-00-89-008B

Terminal Part Information
Terminal
Type ID

Terminated
Lead

Diagnostic
Test Probe

Terminal
Removal Tool

Service Terminal

Tray
Name

Core
Crimp

Insulation
Crimp

I

13582297

J-35616-64B
(LT BU)

J-38125-215A

Not Available

Not
Available

Not
Available

Not
Available

II

13582298

J-35616-64B
(LT BU)

J-38125-215A

Not Available

Not
Available

Not
Available

Not
Available

III

13582326

J-3561635 (VT)

J-38125-553

8100-4444

Sumitomo
22

2

A

Terminal Part Information
Color

Terminal
Type ID

Option

Ground

III

—

Battery Positive Voltage

III

—

III

—

Pin

Size

Circuit