What 346 owners told NHTSA about the 2023 Chevrolet Silverado 1500 Ltd

Multiple random electrical issues, including, but not limited to: 1) "Service ESC" warning activates causing the truck to have greatly reduced speed and power. Extremely dangerous at expressway speeds in heavy traffic. 2) Electrical system & engine completely shuts down with no warning. Extremely dangerous for obvious reasons. Temporarily remedied by disconnecting/reconnecting battery, thus resetting the system. Problems have been confirmed by the dealer, Bomnin Chevrolet- Dadeland. Supposedly vehicle has been inspected by a GM "TAC" technician. Vehicle has been and is currently in the possession of the dealer off & on approaching 2 months with no resolution.

NHTSA ODI 11582761

At approximately 9k mi the engine performance (2.7L MAX Turbo) started to become intermittent. I always record the fuel milage, and always drive the same way, to/from work. NOTE: Displayed mpg calculates within 1% of actual. We can assume the driving habits are identical each time. While driving on the same tank of fuel for a week at a time: one day heading to work the indicated mpg might be 17 mpg. Driving home, about 10 minutes into the drive, it might increase 25 mpg. The following day it could be the same 17/25 mpg or it might be 25/17. The weather is somewhat dependent, whereas around =<43F the 17 mpg is almost a guarantee. While the indicated lower mpg is displayed, a direct lack of engine power is noticeable. The accelerator is dangerously non-responsive, all the while of pressing the pedal >3/4 to the floor. There is also no downshifting from the transmission whatsoever. To make the engine respond to change, the accelerator must be fully pressed to the floor, forcing the transmission into a lower gear and causing the engine to 'wake up'. When the mpg is above 20 or 21 mpg, (and temperatures >50F) the engine performs normally, where gradual accelerations to the pedal increase the engine speeds and down shift as expected. I have contacted GM through the 'MyCheverlot' app a couple of times, and have taken the truck to the dealer twice for this. Both times from the dealer it was stated that since the engine light was not on and no codes were stored, there was nothing that could be done. The dealer installed a software update and sent me on my way. Lastly, the 4WD is now making a grinding/rubbing noise, since the software update and overcomes the engine power while making turns from a stopped position. If no acceleration is applied, the truck will come to a rapid complete stop if rolling <10 mph. Truck is a LEMON!!

NHTSA ODI 11579816

2023 Chevrolet Silverado ZR2 purchased 7/10/2023 with a 6.2L gasoline engine - Lifter and engine bearing failure leading to complete engine failure at 5920 miles on [XXX]. Dealership has been in possession of the vehicle since [XXX]. Engine failed, leaving me stranded at an intersection blocking traffic in single digit temperatures. Due to the electronic gear shift, there was no way to put the vehicle in neutral to move it from the intersection. The tow truck driver was forced to drag the vehicle onto flatbed tow truck, possibly damaging other components in the process. This appears to be a common issue that is known by General Motors without remedy. Appears to be related to the Dynamic Fuel Management system and spring-loaded lifters that fail. The vehicle has been inspected by Chevrolet Dealer, who determined it needs a full engine replacement. There were no warning lamps or messages leading up to the failure. Vehicle drove normal for over 100 miles on the highway. Upon exiting the highway, the auto start stop feature turned the engine off at a stop light. Upon letting off the brake, the engine struggled to start back up and check engine light came on. Pulled over immediately, and upon stopping at the stop sign the engine seized and would not restart. This led to me blocking an intersection for over an hour in single digit temperatures waiting for the police and a tow truck. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11572189

I purchased the vehicle on [XXX] at 124 miles it died at parking lot and would not start, called dealer i bought from they were no help. I had vehicle towed to local chevy dealer Dyer and they pulled VIN and said it was in open recall something about fuel injection flow, they said it should have never left the lot or been sold so now i'm up the creek no truck and not sure where to go with problem. Dyer says it is open ticket and they should have known this. The sales manager at Alanjay said he shows no recall on the truck. The print out from Dyer shows recall release on 01/10/2-24 and i bought on 01/17/2024 there saying they Alanjay should have caught the recall. HELP [XXX] : [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11568163

Engine oil cooler lines began leaking oil at 800 miles. Oil leak appears to be at engine connection for line. Took to dealer where vehicle was purchased. They added dye to engine oil and clean up evidence of leaks. Told me to drive for 300 miles and call if it leaked again. It leaked again and dealer is non responsive to request for repair. Will try another dealer. Leak is significant.

NHTSA ODI 11553164

2023 Silverado 1500 3.0 Duramax. Transmission failure and engine overheating at 5k miles. I was towing a trailer when the 1st transmission failure occurred. The engine shut off, and said shift to N to start while coasting with loss of power braking. I was able to get started but transmission would slip when shifting above 1st gear. I had to tow to the nearest level point to safely park the vehicle, for fear of rolling backwards down 8% grade. At that point the computer was showing engine overheat loss of power warnings. GM roadside assistance towed to nearest dealer, refilled transmission with fluid, and put me back on the road for it to fail again in traffic (loss of power / unable to move). I have now been without vehicle going on 30 days and worry there is more wrong with the vehicle than just a blown transmission (latest GM diagnosis with no repair eta). For a few hours prior to failure I noticed what seemed like the transmission hunting for gears at lower speeds (0-25) with hesitation. Could have been slipping. And also noticed strange / louder than usual turbo noises. I worry the system is generating too much pressure or has mixed oil with coolant somewhere, based on finding atf, coolant, and engine oil near the overflow and all over the bottom of the vehicle. GM support has been atrocious and someone should step in.

NHTSA ODI 11552032

The PCV system plugs up in below zero weather casing the main rear engine seal to blow and leak. Currently waiting for gmc to manufacture the seal as it’s been back ordered due to so many engines needing this part. Estimate is 2 months or more wait. A loud ‘pop’ was heard the day before leaking. It sounded like an object hit under the truck. Oil drops were found the next day and dealership found the leak. Gateway in Fargo, ND is the mechanic and GMC is paying for repairs. If we were to of driven for a prolonged time, the leak could have poured most of all of the oil out of the blown seal and ruined the engine. There were no warning signs. The oil pressure seemed unstable the immediate days afterwards before being looked at. It was going down and coming back up after warming. The oil began leaking faster and in larger amounts as weather warmed above freezing.

NHTSA ODI 11522975