Automatic Transmission Torque Converter problems of the 2019 Chevrolet Silverado 1500

This problem occurs after the vehicle has been driven any distance, but far enough to shift gears in the automatic transmission and when the auto engine stop is deactivated manually or auto engine stop doesn't activate due to driving conditions. When the vehicle comes to a complete stop the torque converter locks and causes the vehicle to lurch forward. The problem is noticeable in traffic, but more of a concern while precision parking and when moving slowly without throttle or brake being applied. This has happened in my vehicle and in all similar loaner vehicles that the dealership has assigned to me during service. Specifically, when parking the vehicle and when inching forward to a complete stop without brake or throttle, the vehicle will suddenly lurch forward without warning and hit the sign, another car, or curb. This problem is not intermittent and happens during every drive and stop.

Ongoing communication between local dealer and chevy/gm executive support team to fix shudder/vibration is not resolved. Chevy states "normal characteristic" for this model vehicle, 2019 silverado 5. 3, 8 speed. I vehemently disagree. Gm approved torque converts swap and then problem got much worse. They now say, resolution is final, this in normal! pleaded with dealership general mgr, to contact district supervisors to re-evaluate. Now they are going to run pico test and comparative analysis against 2 new truck on their lot. My truck only has 6k miles and should shake and vibrate, but it does and getting worse. Harmonic distortion within cab getting worse. Seems the more miles I put on it, the worse it gets. After drain and flush of transmission, per TSB, now also had delayed shifting, and having to brake hard when downshifting because it wants to lurch forward. Frustrating at best, but safety and risk of injury are my immediate concern. Need help!.

Repeated attempts by jones chevy, sumter SC, they have not identified the vibration problems with my new vehicle. 22+ days in repair, multiple visits, and gm classifies harsh vibration as "normal characteristic" and closed the case, saying its final. I have contacted gm ceo with certified letter, discussed with exec. Customer support team, and posted on social media to find any solution. Gm customer service is the worse I have ever experienced. So far dealer has conducted transmission drain and flush per a TSB, changed torque converter, evaluated vibration with pico scope, and problem still exists and persist. Now today it's back at dealer for a prop shaft swap, from a new truck. My vehicle now has 6k miles, and problem started at 5k after the drain and flush. Gm says the vibration is normal because of the dfm, dynamic fuel mgmt. System. I say bs. They are wrong, and no vehicle should vibrate at low or high speed to the point you feel it through the seat, steering column, steering wheel and harmonic distortion in the cab. Gm knows what the problem is, they just don't want to admit. Next step, arbritration? any feedback is much appreciated to solve this vibration issue. Gm - do the right thing and issue a recall before someone gets hurt. Remember the ignition problem? this problem isn't going away.

2019 chevy silverado, 5. 3l with 8-speed transmission. Experienced intermittent transmission shudder at 32 - 44 mph. Vehicle serviced per gm ts bulletin to drain and flush transmission, replace defective fluid with atf mobile 1 synthetic. This was done twice and problem got worse. Now shudders constantly at 32-44 mph. Dealer was informed by gm tech that this is a normal characteristic for this model. I disagree! my brand new truck with only 5k miles should not be shuddering and shaking. Was told that the active fuel management system, 2 to 4 cylinder mode is suspect and affecting torque converter shudder. But this is normal? I have requested repair or replace or buy back and contacted gm corporate directly. Gm senior advisor team has not yet contacted me. I have refused to drive it, and left it at the dealership until resolved. They gave me a loaner to drive in the meantime. Appears lots of instances on the internet of similar issues and owners are not happy. Why hasn't gm engineering fixed this problem or issued a recall yet? I am currently awaiting responses from gm / chevy for resolution. This is unacceptable.