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June 11, 2018 Service bulletin

Electrical system

Chevrolet technical service bulletin PIP5373B for 2016-2018 Chevrolet Malibu, 2016-2018 Chevrolet Impala and 2016-2018 Chevrolet Tahoe and others.

Bulletin number
PIP5373B
Component
Electrical system
Summary
This Preliminary Information communication provides the technician with steps on how to program an Engine Control Module when getting a Service Programming System error code E4491 or E4423. In some cases Techline Customer Support Center may need to be contacted to resolve the issue.

Owners of these vehicles have filed 3,069 complaints in the electrical category.

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