A bent turbocharger compressor blade may be causing a whiny noise in a 2016-2017 Chevy Colorado or Express vehicle.

Some owners of 2014 Chevy Express vehicles may comment that the vehicle will not hold after the shift lever was placed in the Park position or that the vehicle rolled after the shift lever was placed in the Park position and the brake pedal released.

This bulletin applies to 2012-2016 Chevy Express Cutaway vehicles equipped with a 6.0L gaseous dedicated LPG system three-tank configuration fuel system. 

This bulletin applies to 2010-2016 Chevy Express and GMC Savana vehicles. 

Owners of 2011-2019 Chevy Express vehicles may comment that areas of the frame wax coating are peeling off and rust/corrosion is visible.

This bulletin applies to 2019 Chevy Express, Silverado and Suburban vehicles, equipped with a 6.0L L96 engine.