I have a 2023 Silverado 1500 LTZ with the 5.3, 10 speed transmission. I have experienced a minor shutter under light acceleration at times but the software update seemed to remedy the issue. It is currently at the dealer waiting for a valve body. At 15,600 miles, the failure happened with no warning.
I was driving 35 MPH when the RPM's started to go up. I was in disbelief at first. I let off the throttle and gave it throttle again. The transmission starting slipping and then I felt a harsh engagement. The check engine light came on (P0700, P0776,P0797) and a message stated "Limited acceleration". When I got home, I went to put the truck in reverse to back into my driveway. No reverse gear. I called Onstar and had the truck towed to the dealer. They are estimating 2 months for repairs due to replacement valve body being on back order. I was told that GM used a plastic check ball (Instead of a metal one). He said the check ball will get sucked up into the valve body causing a pressure drop. One of the reasons I decided to buy a new truck instead of used was for reliability ($68,000.00 mistake?).
They put me in a Chevy Malibu from Hertz until the truck is fixed. I appreciate them supplying me a rental but I need a truck. Hertz told me the don't have any chevy trucks because chevy bought back all of their trucks during the pandemic at a premium price to sell on the lots. He also said that because I am getting a rental for warranty repairs, Chevrolet requires them to use a GM product for my rental. I am looking at all of my options at this point.
