2018 Chevrolet Camaro

This Preliminary information communicates

This Preliminary information communicates that a vibration concern on deceleration can be felt in the floor, seat, console and steering wheel between speeds of 70-60 MPH in 6th gear has been identified by G.M. If the clutch pedal is depressed and the concern is gone the likely cause is related to the transmission main shaft butIf the clutch is depressed and the concern remains the same or in 5th gear during the same speed range please continue with published vibration diagnosis in service information database.If a pico scope is used it presents at about 46 Hz. Technician isto verify concern, ensuring trans was built before identified serial number and replace transmission.

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.