NHTSA ID Number: 10154301
Manufacturer Communication Number: PIT5282E
TSB/Document Date: 2019-03-11
Summary
This Preliminary Information communication provides information to the technician that a customer may request the factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors
part number 23184088 into Middle Bus Electrical Center (X61A).
Bulletin No.: PIT5282E
Published date: 02/18/2019
Preliminary Information
PIT5282E Procedure for Installation of an Aftermarket Trailer
Brake Controller or In Lieu of Factory Trailer Brake Controller
Models
Brand:
Model:
Model Years:
VIN:
from
to
Transmissions:
Escalade
2015 - 2019
All
All
All
All
Silverado 1500
2014
All
All
All
All
Silverado
2015 - 2018
All
All
All
All
Silverado LD
2019
All
All
All
All
Silverado 2500/3500
2019
All
All
All
All
Suburban
2015 - 2019
All
All
All
All
Tahoe
2015 - 2019
All
All
All
All
Sierra 1500
2014
All
All
All
All
Sierra
2015 - 2018
All
All
All
All
Sierra Limited
2019
All
All
All
All
Sierra 2500/3500
2019
All
All
All
All
Yukon Models
2015 - 2019
All
All
All
All
Supersession Statement
This PI was superseded to add the 2019 models. Please discard PIT5282D.
Condition / Concern
Some customers may request to have an aftermarket trailer brake controller added to their
vehicle, OR an aftermarket trailer brake controller added in lieu of the factory integrated
trailer brake controller (ITBC) (RPO JL1).
Recommendations / Instructions
1. Obtain a trailer brake controller harness, GM Part # 23184088, as shown below.
2. Connect the harness to the MID-BEC (X61A). The MID-BEC is located under the I/P to the
left of the steering column. The harness connection point (1) is illustrated below.
3. The trailer brake controller harness consist of 4 blunt cut wires and a label that calls out
the wire colors and each wire’s function, also shown below. Use these 4 blunt cut wires to
connect to the aftermarket trailer brake control.
Four Blunt Cut Wires
Dark Blue
Circuit 47
Red/Green
Circuit 242
Battery Power (30 AMP)
White/Blue
Circuit 3691
Brake Signal
Black
Circuit 1050
Ground
4. Perform this step ONLY if equipped with RPO JL1 where the customer is requesting the
factory trailer brake system be bypassed to add an aftermarket trailer brake controller.
Locate connector X185 Or X138 (varies with vehicle build; refer to SI), which is near the
underhood fuse block, terminal 32. Circuit 47 ends at the body harness side of X185 or X138
terminal 32, which comes from the X61A junction block. Obtain enough Dark Blue 12 gauge
wire to run from X185 or X138 to the 7-way trailer connector at the bumper. Attach
terminated lead part number 13327155 to one end of the Dark Blue and insert into the
chassis harness side of the X185 or X138 connector terminal 32. Run the Dark Blue wire in
its own conduit along the frame to the 7-way trailer connector at the bumper. Remove circuit
47 from the 7-way trailer connector terminal “C” and tape the bare terminal and attach to
the harness. Attach terminal part number 12110853, located in Delphi Tray 4, to the other
end of the Dark Blue wire, with the correct weather pack seal, and insert it into the 7-way
trailer connector terminal “C.”
Parts Information
Part Number
23184088
Description
Trailer Brake Controller Harness
Qty
1
Warranty Information
If the customer wishes to have an aftermarket brake controller installed in their vehicle, it
would be considered as a Customer Pay option.
© 2019 General Motors. All Rights Reserved.
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
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TSB/Document ID: PIT5282E
Replacement Service Bulletin Number:
MFR Communication Date: 2019-02-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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