Service Bulletin

Bulletin No.:

19-NA-144

Date:

July, 2019

INFORMATION
Subject:

SDM Calibration Update After AEV Bison Style Front Bumper Package Installation

Brand:

Model:

Chevrolet

Colorado
ZR2

Model Year:
From:

Involved Countries

To:

From:

2017-2019

To:
—

Engine:

Transmission:

—

—

United States and Canada Only

Information
Colorado ZR2 Bison Front Bumper Inflatable
Restraint Sensing and Diagnostic Module
Calibration Details
Warning: Installation of the front bumper/skid plate
assembly on your non-Bison Chevrolet Colorado
ZR2 vehicle may cause your vehicle’s airbags to
deploy in a way that differs from production intent,
and will also cause your vehicle to no longer
comply with Motor Vehicle Safety Standard 208
(Occupant Crash Protection). Upon installation of
the front bumper/skid plate assembly on a
non-Bison vehicle, your vehicle’s airbag software
requires a calibration change to ensure the airbags
function as intended.
Please visit your Chevrolet dealership to update the
Inflatable Restraint Sensing and Diagnostic Module
calibration available through Techline and the Service
Programming System (SPS) and for more information.
Contact the Techline Customer Support Center
Before reprogramming the SDM, call the Techline
Customer Support Center (TCSC) at 1-800-828-6860
(English). In Canada call 1–800–503–3222 (French).
The TCSC will provide programming requirements and
instructions. When calling the TCSC, please ensure the
specific vehicle VIN is available.
Reprogramming
Note: This calibration update is only applicable to
a Colorado 4WD built with RPO ZR2.

Copyright 2019 General Motors LLC. All Rights Reserved.

Date Breakpoint:

Reprogramming of the Inflatable Restraint Sensing and
Diagnostic Module must be done with the Service
Programming System at an Authorized GM Dealer. The
calibration does NOT include any hardware content.
1. Stable battery voltage is critical during
programming. Any fluctuation, spiking, over
voltage or loss of voltage will interrupt
programming. Install a battery maintainer or power
supply to maintain system voltage that provides a
steady and stable voltage. Do not use a battery
charger, as charging voltage will often fluctuate
when connected to the vehicle. This may interrupt
programing. If a battery maintainer is not available,
connect a fully charged 12 V jumper or booster
pack disconnected from the AC voltage supply.
Note: If the vehicle has been involved in a crash or
near deployment event it may not allow the SDM to
be reprogrammed without first being replaced.
2. Reprogram the inflatable restraint sensing and
diagnostic module. Refer to K36 Inflatable
Restraint Sensing and Diagnostic Module:
Programming and Setup in SI.
⇒ If an SPS failure message E4489 occurs during
reprogramming, do not call the TCSC
immediately. Record at which point the failure
occurred before it displayed the E4489
message. When this occurs, proceed to GDS2.
Download the appropriate vehicle configuration
and select the Inflatable Restraint Sensing and
Diagnostic Module. Under Identification
Information, observe these parameters:
Software Module 1 Identifier and Software
Module 2 Identifier. Record these parameter
values on the back of the job card. Go to
Step 3.

Page 2

July, 2019

Bulletin No.: 19-NA-144

3. If the parameters Software Module 1 Identifier and
Software Module 2 Identifier are populated with a
value of 1 or more, replace the Inflatable Restraint
Sensing and Diagnostic Module. Refer to Airbag
Sensing and Diagnostic Module Replacement
in SI.
4. Perform the Diagnostic Repair Verification. Refer
to Diagnostic Repair Verification in SI.

Warranty Information
This upgraded SDM calibration is a customer pay
transaction and should not be submitted as a warranty
claim. A $75 Dealer Piece Cost for the Calibration will
be billed to the BARS/Open Account monthly via
Techline. The Dealer Statement will include the
17-character VIN, Part Number Reference, and Dealer
Piece Cost.
Reprogramming the SDM with this calibration maintains
the vehicle’s warranty.

Version Information
Version

1

Modified

Released June 27, 2019

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.

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