Bulletin No.: PIC6335A
Published date: 07/27/2018

Preliminary Information
PIC6335A Circular Image Distortion on Any of the Screens
Including the Buick Tri-Shield Start Up Screen
Product Investigation Review Required
Models
Brand:
Buick

Model:
LaCrosse

Model Years:
2018

VIN:
from

to

4/10/2018

TBD

Engine:
All

Transmissions:
All

Note: The Model Table above shows the VIN build date range for vehicles a ected by this PI. When the TBD end
date for the LaCrosse is known, this PI will be updated.
Involved Region or Country North America and all Export Regions
Additional Options (RPO)

Condition

Cause

IO5 or IO6
Some customers may comment that they notice a circular image distortion on any
of the screens, including the Buick tri-shield starting screen as shown in the
examples below. Some technicians have also reported that disconnecting and
reconnecting the battery may improve the image quality.
This is a result of a radio control (ICS) assembly software concern.

Correction:
If this concern is encountered, check for codes and repair as necessary.
If there are no other concerns or codes present, do not replace any parts as engineering is evaluating the concern
at this time and replacing parts will not address the concern.
If a service x is released, a related service bulletin will be released with additional details.

Warranty Information
Labor Operation

Description

Labor Time

Check for DTCs and Evaluate Radio
Control Display Operation

3480858

.3 Hr.

*This is a unique Labor Operation for Bulletin use only.

Customer Information
Please communicate to the customer that we apologize for this inconvenience and that
General Motors is working on a solution for this concern. Once a solution is available,
this PI will be updated with additional details - allowing dealership personnel to
contact the customer to schedule a service appointment and repair the vehicle.

Version History
Version
Modi ed

2
6/15/2018 - Created
7/20/2018 - Updated models.

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