Thank You to the original poster...I bought a 2017 Silverado Crew and thought I had a lemon...Two pieces of paint stick later I have a responsive 5.3 gm again. I have to say whoever designed this garbage gas pedal setup should be escorted off of GM property Immediately. My truck had such a lag I was going to take it in for Service and not take it back until it was Fixed. Taking off from stop signs or city stop and go driving was a adventure at best...you never knew if it would take off or hesitate when getting on the gas. My 2005 crew was always responsive and predictable when applying pressure to the gas pedal. GM is really dropping the ball with this design and should recall and fix this pedal flex. It has to be hurting sales...New and used. Thanks Again for this Fix and putting a smile on a longtime GM owners Face.