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July 10, 2015 Service bulletin

Equipment: electrical

Chevrolet technical service bulletin PIC5491G for 2006-2015 Chevrolet Malibu, 2006-2015 Chevrolet Silverado 1500 and 2006-2015 Chevrolet Impala and others.

Bulletin number
PIC5491G
Component
Equipment: electrical
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.

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