2021 Chevrolet Silverado 1500 POWER TRAIN,ENGINE

Valve lifter failure resulting in bent rod engine failure.

Vehicle engine has experienced engine lifter failure at 28,000 miles. Engine began shaking violently, check engine lights flashing, traction control light, and stability control lights all came one while driving on the highway several hours away from home. Vehicle had to be towed by Chevy roadside assistance to the nearest dealership. Chevy dealership inspected and said they have to order new lifters for my engine and it would take several weeks for repair.

At 7,316 miles my 2021 Silverado 5.3 V8 had lifter failure while driving, the truck would not accelerate correctly and I was forced to pull off the road, luckily it was able to turn off at the next road before the vehicles behind me caught up. The check engine light was blinking and was making a lot of popping noises. I was able to take back roads and drop it off at the dealership for repairs.

Add 1 more victim to the ongoing and growing list of GM owners of vehicles with 5.3/6.2Lmotors with DFM lifter failure. 50 miles after returning from a 500 mile trip from N. Wisconsin fishing trip this motor threw in the towel. Dealer assessment cylinder #6 lifter failure with an extra bonus of damage bad enough to require replacement of entire cylinder head! This motor has 11K. miles on it, and I have had oil changed multiple times as I am old school and don't buy into the whole 7500K. thing. Guess I should have saved my cash for something more fun! Check engine light did not come on till almost 2mi. after vehicle started running badly, flashing check engine light did not come on till I was almost home 15 mi. Had it towed to the dealer on my own dime!

I have a 2021 Silverado 6.2 being repaired for failed lifters. I see this is a common trend and can cause hazards when pulling over for a faulty motor. 10 speed Transmission downshifts from 2 to 1 harsh with rpms jumping up causing for me to apply more brake pressure to stop. I have had a few incidents when I get close to the vehicle in front coming to a stop. I have taken vehicle to dealer for issue and they couldn’t replicate issues. Check engine light has popped up once or twice but never stayed on long enough to throw a code.

while stopped,engine running,in gear,foot on brake the truck lurched forward approx 2-3 feet. when i tried to pull forward the engine was revving a much higher rpm's. moved down road approx. 1-2 miles, tried to turn around to return to a dealer near by and truck would not go into reverse...on-star reported to get engine/transmission service soon. reported to dealer, they checked the (code)? truck continued to run well....till it happened again....now it has happened a third time dealer has ordered parts to try to correct. dealer is trying, but no one seems to know what to do...

----WARNING LIGHT FLASHING AT 103 MILES ON VEHICLE ,, DEALER RESET ----450 MILES ON VEHICLE STALLING ,,WARNING LIGHTS ECM - ENGINE SYSTEMP2635 THE ENGINE AND TRANSMISSION SYSTEM IS NOT PERFORMING AS EXPECTED. AN ISSUE HAS BEEN DETECTED IN THE FUEL MANAGEMENT SYSTEM USED TO MAINTAIN, CONTROL AND MONITOR FUEL CONSUMPTION. IF THE CHECK ENGINE LIGHT IS FLASHING, A MISFIRE CONDITION HAS BEEN DETECTED. A MISFIRE INCREASES VEHICLE EMISSIONS AND COULD DAMAGE THE EMISSION CONTROL SYSTEM ON THE VEHICLE. PLEASE REDUCE VEHICLE SPEED, AVOID HARD ACCELERATIONS, AVOID STEEP UPHILL GRADES, AND REDUCE ANY CARGO LOADS SUCH AS A TRAILER. IF THE VEHICLE IS CONTINUALLY DRIVEN WITH THE CHECK ENGINE LIGHT ON, THE EMISSION CONTROLS MIGHT NOT WORK AS WELL, THE VEHICLE FUEL ECONOMY MIGHT NOT BE AS GOOD, AND THE ENGINE MIGHT NOT RUN AS SMOOTHLY. THIS COULD LEAD TO FUTURE REPAIRS. VEHICLE WAS TOWED TO MALTBIE CHEVY AND HAS BEEN THERE SINCE FEB 24TH

TL* THE CONTACT OWNS A 2021 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING OFF FROM BEING STATIONARY, THE VEHICLE STALLED WITHOUT WARNING. THERE WAS NO WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO SMART CHEVROLET CADILLAC BUICK GMC (3 SMART DR, WHITE HALL, AR 71602, (870) 543-2200) BUT WAS NOT YET DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE HOWEVER, THE CONTACT WAS STILL AWAITING A RESPONSE. THE FAILURE MILEAGE WAS APPROXIMATELY 300. THE CONSUMER STATED THE VEHICLE WAS REPAIRED. A COIL PACK WAS REPLACED.