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December 18, 2017 Service bulletin

Electrical system

Chevrolet technical service bulletin PIC5491K for 2006-2018 Chevrolet Malibu, 2006-2018 Chevrolet Silverado 1500 and 2006-2018 Chevrolet Impala and others.

Bulletin number
PIC5491K
Component
Electrical system
Summary
This Preliminary Information communication provides information to the technician about vehicles that have an OnStar system that will not power up. Technician should turn off the ignition and cancel retained accessory power. After the vehicle has powered down remove power to the OnStar module for five minutes. After the power has been removed for five minutes, if the OnStar system is working release the vehicle. If the OnStar system is still inoperative continue with published Service Information diagnostics.

Owners of these vehicles have filed 22,613 complaints in the electrical category.

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