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May 8, 2020 Service bulletin

Power train

Chevrolet technical service bulletin PIP5727 for 2020 Chevrolet Silverado 1500, 2020 GMC Sierra 1500 and 2020 Chevrolet Silverado 2500 and others.

Bulletin number
PIP5727
Component
Power train
Summary
This Preliminary information communicates diagnostic tips on finding root cause of a hoot noise. If the technician confirms the hoot noise is only present while the torque converter clutch is applying the technician should advise the customer that the noise will diminish over mileage and should dissipate after 3,000 ? 4,000 miles of driving and does not pose a durability concern.

Owners of these vehicles have filed 431 complaints in the transmission category.

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