Service Bulletin

Bulletin No.:

19-NA-093

Date:

May, 2019

TECHNICAL
Subject:

Engine Air Filter Life Shows 0% After Battery Disconnect

Attention: This bulletin replaces PIP5605 and PIP5636. Please discard all copies of PIP5605 and
PIP5636
Brand:

Model:

Chevrolet

GMC

Model Year:

Build Date:

from

to

Silverado
1500 (New
Model)

2019

2019

Sierra 1500
(New Model)

2019

from

to

SOP

February 11,
2019
(Fort Wayne)
or
February 13,
2019 (Silao).

2019

Engine:

Transmission:

8–cylinder gas
engine
5.3L (L84) or
6.2L (L87)

All

Involved Region or Country

Canada, United States, Mexico

Additional Options (RPOs)

Equipped with 8–cylinder gas engine 5.3L (L84) or 6.2L (L87) and OnStar (UE1)

Condition

After a battery disconnect the driver information center (DIC) may incorrectly display Air
Filter Life 0% - replace now.

Cause

This false message may be caused by a firmware issue.

Correction

Inspect the engine air filter, reset filter life, and check for an OnStar update. A new OnStar
firmware update, version V6.63, has been released to OnStar equipped vehicles. Due to
cyber-security policies this firmware update cannot be installed through TIS2Web, so
firmware (OnStar v6.63) was released to involved vehicles via an Over-the-Air (OTA)
update. This update can occur remotely through in-vehicle prompts from the radio
display. However, some customers may decline the vehicle update or the update may be
unsuccessful. This would require the dealer to install updated OnStar hardware.

Service Procedure
Note: This procedure only applies if the condition
occurred after a battery disconnect. Vehicles beyond
6 months in service and greater than 10,000 mi/
16,000 km may have a true need for air filter
maintenance that is NOT related to this bulletin
procedure.
Note: It is possible that the OnStar OTA update has
been pushed to the vehicle and that the customer has
missed or ignored on-screen prompts to install it. A
typical symptom of any pending OTA update is that the
radio will remain on for 30 seconds after the ignition has

Copyright 2019 General Motors LLC. All Rights Reserved.

been turned off and the driver door opened. Do NOT
decline the OnStar update. OnStar firmware CANNOT
be installed via TIS2Web due to cyber-security policy.
1. Inspect the engine air filter.
1.1. If the engine air filter requires service, advise
the customer of the needed maintenance. Air
filter maintenance is not a warrantable
service.
1.2. If clean (not restricted), proceed to steps 2-4.
2. Reset the DIC message.
2.1. In the DIC scroll to Air Filter Life > select
Menu > Reset > Yes.

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Note: This only applies to vehicles built prior to
February 11, 2019 (Fort Wayne) or February 13, 2019
(Silao). Vehicles built after these dates where
assembled with the firmware solution installed.

3. Inspect for an OnStar firmware update v6.63 and
install, if necessary.
3.1. Enter the radio menu on the radio display.
Select Home > Settings > About.
• On IOR-equipped vehicles this will bring
you to the About menu page to view
Update History.
• On IOS, IOU, or IOT-equipped vehicles,
scroll to Build Number and select the
lowercase “i” next to Build Number to view
Update History.
IOR-equipped vehicles:

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IOS/IOT/IOU-equipped vehicles:

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3.2. Look for a line that contains reference to
OnStar update “v6.63 ” or greater in it. The
sample illustrations above do not show this
specific version but illustrate where to find it.
The presence of OnStar v6.63, or any OnStar
update greater than v6.63 indicates the
firmware has been installed and that this
bulletin does NOT apply. Refer to SI for further
diagnostics.
Note: It is possible that the OTA update has been
pushed to the vehicle and that the customer has
missed or ignored on-screen prompts to install it. Do
NOT decline the OnStar update. It CANNOT be
installed via TIS2Web.

3.3. Determine if the update has already been
downloaded to the module and is pending
installation.
• Enter the radio menu on the radio display.
Select Home > Settings > Updates. If an
update is available, a popup will soon
appear. Select Install Update and follow the
on-screen instructions.
Note: Do NOT replace the OnStar module prior to
inspecting for the presence of the pending update.
4. If the OnStar v6.63 update is not listed in the About
screen, the Update History menu, or the Updates
screen; or if the customer comments that they did
receive notification of an OnStar OTA update and
declined it, replace the OnStar module. Firmware
will be current on the replacement part.

Bulletin No.: 19-NA-093

May, 2019

Page 7

Parts Information
Note: Part numbers listed in the part table may be
superseded over time. They were current at the time of
publication.
Refer to the Electronic Parts Catalog and/or Electronic
Service Center for the appropriate OnStar Module part
number based on the VIN.
Causal
Part

Description

Part
Number

Qty

X

Module, Comn
Interface

84644344

1

X

Module, Comn
Interface

84644343

1

Warranty Information
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor Operation

Description

Labor Time

9104437

Inspect Air Filter, Reset DIC Message and install over-the-air
update OnStar v6.63

0.8 hr

*9104383

Inspect Air Filter, Reset DIC Message and replace
Communication Interface Module

1.0 hr

* Internal system records will indicate when an update was pushed to the vehicle and whether it was declined. Dealers should
only replace the module after confirming an update is not pending installation or was previously declined by the customer.
Warranty claims for OnStar module replacement per this bulletin are subject to review and debit if the over the air update was
available for installation at the time of repair.

Version

1

Modified

Released May 21, 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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