Automatic Transmission Control Module problems of the 2020 Chevrolet Silverado 1500

My 2020 high country deluxe 6. 2 l87 gm motor: at every cold startup, the engine sound is erratic and sounds like metal on metal for internal combustion for approximately 2 seconds until the newly designed two-stage, variable displacement vane-type pump oil sump pump. The biggest issue that I have with this design is, with a 2 stage pump, depending on the engine rpm, according to gm is possible lower psi to pump the oil to the top end valve assembly. In addition, the ow/20 oil imho is too thin and does not have the viscosity to lubricate the motor properly. Gm fix (for 2021 -2024 l87 6. 2 motors was to change the viscosity to 5w/30 supercar synthetic oil, add a leaf to the owners manual to dictate the oil viscosity change and changing the oil cap from 0w/20 to 5w30. 10-speed hydra-matic 10l80: hard upshifts and downshifts intermittently and confusion of proper gears. There is a TSB regarding this specific valve body and torque converter issues. Finally: when deactivating dfm random cylinders as needed by ecm-tcm-bcm, the lifters are staying in the collapsed state and cant return to full height resulting in bent push rods, rocker arm damage, camshaft damage, crankshaft damage and catastrophic engine failure. It now seems that NHTSA has issued a new federal probe into the remaining 2019-2021 l87 6. 2 motors.

With only 70,000 miles on the truck it started to have a hard shudder and wheels locking up. During the wheel shudder it would shift hard as well. We took it to a shop and they said it was our transmission control module and that the transmission had metal shavings and would fail soon. They also said doing any service to these transmissions can cause failure. We were informed that the dealership is aware these transmissions are all failing. The cost to replace is over $6,500. The dealership should have to do an official recall for this. After some research I found that the dealership has acknowledged the issue by replacing the tcm and uploading new software to put the transmission into a fail safe instead of putting in a new transmission. The issues that the failure causes has made thousands of people have to get new transmissions before the service is even due. A quick search on google states that 461,000 vehicles were effected and that a recall has been issued, but it has not been officially issued. We need a new transmission and should not have to pay for it on a truck that is so new and serviced timely.