general problems of the 2020 Chevrolet Silverado 1500 - part 1

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that the infotainment center intermittently went black, and there was water leaking into the vehicle through the top and lower center of the front windshield and the rear windshield. The vehicle was taken to a dealer, where the rear windshield was replaced without a diagnostic being performed; however, the failures persisted. Additionally, the side view mirrors intermittently failed to unfold when starting the vehicle. The contact stated that while driving approximately 40 mph, white smoke emitted from the exhaust, the vehicle hesitated, and it lost power. The check engine warning light illuminated, along with "service electronic stability control", "trailer brake system", "steering assist reduced", "service brake assist", and "brake system failure" messages, and the vehicle failed to exceed 40 mph. The vehicle was towed to a second dealer, arcadia Chevrolet Buick (210 s brevard Ave, arcadia, FL 34266), where it was diagnosed that the lifter and torque converter had failed. The lifter and torque converter were replaced, and the system was flushed. Approximately 800 miles later, the engine failed again. The vehicle was towed to an independent mechanic, who diagnosed that the torque converter and transmission had fractured. The torque converter and transmission were replaced; however, the warning lights and messages illuminated again, and the vehicle continued to hesitate when driven over 42 mph. After being parked for a few days, the warning lights were no longer illuminated and the mirrors opened, but the engine hesitation persisted. The vehicle was not further diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 10,000.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at 55-65 mph, a rattling sound was heard coming from the front passenger-side of the vehicle. No warning light illuminated; however, the contact noticed that the voltage levels were between 9 and 11 volts. The vehicle was taken to the dealer, where it was diagnosed that the transmission had failed and needed replacement. The vehicle was not repaired. The manufacturer was notified of the failure and filed a case. The failure mileage was approximately 79,000.

Vehicle: 2020 Chevrolet Silverado 1500 4x4 lt (5. 3l v8 engine) component: engine (piston rings, lifters, and motor assembly) / powertrain component availability: yes, the failed components/vehicle are available for inspection upon request. What happened and safety risk: while operating the vehicle on prince street in clovis, nm, the engine suddenly began knocking violently without any prior warning or symptoms. Immediately following the mechanical failure, dashboard warning lights illuminated (including the check engine light, abs, and traction control) and the vehicle dropped into "reduced engine power" mode. This caused an immediate and hazardous loss of acceleration on an active roadway, forcing an emergency maneuver to navigate out of traffic and pull over safely. This sudden powertrain failure poses an unreasonable and severe safety risk to the driver and surrounding traffic. Confirmation and inspections: the mechanical failure has been confirmed and diagnosed by hamilton chevy in portales, new mexico, and sanders repair services in portales, new mexico. The vehicle and components have not been inspected by the manufacturer, police, or insurance representatives. There were no warning lamps, messages, or symptoms of any kind prior to the sudden failure.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at approximately 40 mph, the vehicle shuddered and downshifted independently. No warning lights illuminated. Additionally, an obd2 diagnostic scan retrieved diagnostic trouble codes: u0146, u0101, and u0100. A local dealer was contacted; however, the vehicle was not diagnosed or repaired because the VIN was not included in any recall. Additionally, the contact related the failure to NHTSA campaign number: 24v797000 (power train). The manufacturer was not made aware of the failure. The failure mileage was approximately 84,000.

Transmission shudder/rumble strip vibration when accelerating.

While driving at highway speed, my vehicle developed a serious transmission problem. At approximately 75 mph, it suddenly lost the ability to maintain speed and dropped to about 55 mph despite throttle input. Engine rpm increased significantly and the vehicle had greatly reduced propulsion. Normal operation temporarily returned after the vehicle was shut off and restarted. The vehicle has also experienced harsh shifting, vibration, limp-mode behavior, a check-engine light, and I reported a momentary wheel-lock event. These symptoms create a safety concern because an unexpected loss of propulsion or abnormal transmission behavior at freeway speeds can increase the risk of a collision. The vehicle was inspected by an authorized Chevrolet dealer. The dealer documented transmission-related diagnostic codes including p0700, p0970, p0968, and p0711. The dealer's repair order specifically referenced gm program n242454441-03, described transmission control-valve wear and pressure loss, and recommended replacement of the valve body. A separate repair estimate included the valve-body assembly and related transmission service parts. Despite the dealer recommending valve-body replacement, gm/dealer coverage was denied primarily because p0747 was not present at the time of diagnosis. I am reporting this because I am concerned that transmission control-valve/valve-body deterioration may cause harsh shifting, reduced propulsion, limp mode, or other safety-related symptoms before or without p0747 being stored. I am asking NHTSA to review whether vehicles with the same underlying valve-body failure may remain on the road because the specific qualifying diagnostic code is not present during a dealer scan. The vehicle and transmission are available for further inspection if requested.

Gm has a known recall and special coverage n242454441 to cover the exact same issue I experienced on my way home from work. However, I am informed my model is not included in this special coverage. The issue I experienced while attempting to turn into my apartment complex on a busy road [xxx] my rear wheels locked up mid turn no warning signs, no lamps, no messages or other symptoms were present. Almost causing me to get into an accident had traffic not stopped. I was able to shift it into park and then to drive to immediately pull off to the side into a parking lot and put my obd reader I have p0747 solenoid 1 failed locked on. I was informed by gm that they could attempt to reprogram the transmission control model, however based on research this is not the root cause of the issue it is due to the soft aluminum bores causing the transmission module to ware and fail. I have a service appointment on 6-12-26 at 10 am at bill cramer gm in panama city, FL information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See attached document for complaint.

While driving my truck it started flashing all the service lights on the dash, and then started shaking bad and making a loud ratcheting noise from the transfer case/transmission and a loud knock/tick from the engine. I scanned for codes and it has all loss of communication codes for engine/transmission/transfer case/brakes/steering.

Transmission failed before 100,000 miles. All service was complete throughout the life of the vehicle. Problems shifting to next gear causing pulling or slipping on the vehicle. If not able to accelerate properly could cause a safety concern on the road. Repairs were made costing $9,000.

Torque converter disintegrating, metal contamination in transmission fluid.

Our truck started hard shifting and lurching almost a year ago, the check engine light will come on, sometimes the truck will go into safety mode, then the check engine will be off. The problem progressed and we had it diagnosed as a bad transmission control valve which we were made aware is not available to get replaced because of the ongoing recall on other vehicles in the same year range as ours, just not ours specifically. We need to get this fixed and if others are getting it fixed on recall ours should be as well. Otherwise we have a barely usable vehicle, that my husband relies on to get to work, sometimes hours from home, with no way to fix it, a year left of payments, and diminished value because of the transmission issue. . . That again others are getting fixed at no cost to them. Even without the recall we can't get it fixed because all available parts are going towards the recall. We deserve to have our vehicle added to this recall so we can get in line to fix it. We have been loyal customers for over 20 years to our local dealership rydell cheverolet. The incident date is ongoing for over a year but I will put in the most recent date where my husband was almost stranded 300 miles from home.

I had transmission serviced 9 months ago. Transmission has always shifted hard ( like it was going to shift up to next gear , but then downshift back ) had serviced and a transmissiom check 5/21/26 and now saying I need it replaced. Truck has 106,000 miles. I’ve heard so many reports of chevy silverado transmission going out right after 100,000 miles. If it’s a common problem , I feel gm should recall and repair/replace.

Transmission is starting to shudder when maintaining 40-45 mph and will have to let off the gas or accelerate for the gear to shift.

I purchased this vehicle from ghent Chevrolet in greeley colorado, since I have owned the vehicle I have had several transmission problems which caused the vehicle to stick in fourth gear and I have also have issues with the transmission violently shifting into first gear to the point it feels like I’ve been rear ended. I have had to replace the entire wiring harness and the water pump module as well as the thermostat module and the louvres in the front of the vehicle. I have service records for the vehicle for all the repairs and that state the amount of repairs has far exceeded the value of the vehicle and I’m currently having transmission issues again. Please help me find some sort of resolution to this situation! I have already tried to use and was rejected from the colorado lemon law.

Transmission shutter had to have torque converter replaced Aug of last year and valve body may of this year replaced on the 8l90. Which has a know issue with 2015-2019 but I have the same problem those years are having.

The defective manufacturer lifters on my 2020 Chevrolet Silverado 1500 went on my truck damaging the lifters, camshaft, oil pump and I'm sure more than that. I know it's an ongoing investigation/lawsuit with general motors, but they need to held accountable and should fix this issue free of charge. Not everyone has $5k-$10k+ to repair their engine due to their negligence. Thank you.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the vehicle jerked forward extremely hard. The power train warning light was illuminated. The vehicle was driven to the residence. Additionally, the vehicle failed to exceed 60 mph while driving. The vehicle was not diagnosed or repaired by an independent mechanic or a dealer. The contact stated that the failure was a known failure with the vehicle. The manufacturer was not made aware of the failure. The failure mileage was approximately 143,000.

I had been driving my truck for multiple days, after a knocking sound suddenly started from under the hood. It was evident at any speed that wasn't idle. There were no check engine lights displayed on the dash. The sound was annoying enough that I took it in. According to the dealer technician, the transmission pump "completely detached" and was "rolling around inside the transmission. " they found metal fragments in the transmission fluid, and they declared the transmission a total loss. I have no idea how my truck was still driving, but if the transmission really had failed so catastrophically, I was driving a ticking time bomb. What if it decided to completely give out while driving my kids to school as soon as I made a left turn across traffic?.

Was driving vehicle and it revved very high and then got stuck in a single gear. Mpg have also been impacted as of late. Gm saying VIN isnt under the valve body recall, but dealer has determined the valve body needs to be replaced.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the rpm became extremely elevated. The accelerator pedal was depressed; however, the vehicle failed to respond. The vehicle was turned off and restarted. No warning lights were illuminated. The vehicle was towed to the local dealer, where it was diagnosed and it was determined that the torque converter was inoperable, and that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline. The approximate failure mileage was 80,000.

Problem#1 :the transmission shits erratically and down shifts really hard and has a vibration going down the highway. Problem #2: the rear-end differential seems to lock up when turning sharp corners.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving 35 mph, the vehicle shuddered and lost automotive power. The check engine, abs, and several other unknown warning lights were displayed before an engine misfire. The vehicle regained automotive power before hesitated while depressing the accelerator pedal. Additionally, there was an abnormal humming sound coming from the engine. The vehicle was eventually driven to the dealer where a diagnostic test was performed. The dealer determined there was a lifter failure in cylinder #2, and there was debris in both the engine and transmission, which caused engine and transmission failures. The dealer agreed to a goodwill repair, to cover part of the cost of the repair. The manufacturer was notified of the failure and transferred the contact to the NHTSA to report the failure. The vehicle was not repaired and remained with the dealer. The failure mileage was approximately 70,000.

On the transmission for the 8-speed I'm wondering why mine hasn't been recalled when all the others have been recalled were made the same basically time. And I'm having the same issues as those other transmissions.

I replaced the fluid in my truck at 142k miles and when I went through all of the gears and checked for drips or leaking it was fine on that front and then I went to reverse and all of the gears were neural and only revved and when I went into neutral it started driving forward like it was the drive gear.

Internal oil consumption. With no oil puddled or spattered under the vehicle at time of purchase from a dealership or since then, a dealer certified vehicle with afm at 153 miles from leaving the dealer the oil was non-existant on the dipstick. This directly indicates a TSB, techical service bulletin involving the cause of failed lifters causing internal oil consumption and damage to lifters, cam shaft, push rods, rings and possibly more. This is a common result of the active fuel management system which shuts off some of the cylinders for fuel economy for Chevrolet v6 and v8 engines. The problem was reported to the dealer by me imediately after the oil check at 153 miles and then towed to the dealer. As this is considered a catastrophic amount of oil loss, the vehicle could've been rendered inoperatable during operation in traffic and been a servere safty hazard. The dealer after initial inspection sent me a message that they think the problem is an undetectable small leak so they put some dye in the oil to check it. Which evades the actual internal consumption problem of 1. 5 to 2 or more quarts of oil lost in just 153 miles by that ratio that would amount to 13 quarts per 1,000 miles. And helps them stall for time, to try to run out the very short 3 month/3000 mile drivetrain warranty. There was noticable erratic engine performance and some shudder but that shudder may have come from the transmission. The odometer read was 115690 at purchase and 115843 when towed=153 miles driven from when the certified inspection was performed for a loss of 1. 5 to 2 quarts that I know of, it could have been much more oil missing. A suddenly inoperatable vehicle in town at intersections or on the highway at high speeds could be deadly for myself or others in traffic. I took and have videos of checking the dipstick to show it dry but it's an mp4 file which I don't see a place to upload it here. Available upon request.

Rear wheel lock at speed up due to failed valve body and transmission.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the accelerator pedal was depressed, and the rear wheels locked up. The contact stated that the failure almost caused a crash. No warning lights were illuminated. The rear wheels locked up for several seconds, then the rear wheels released, and the tires chirped. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall with a similar failure description; however, the VIN was not under recall. The contact stated that the vehicle was important due to scheduled doctor's appointments. The manufacturer was not made aware of the failure. The failure mileage was approximately 73,000.

Vehicle was brought to payne Chevrolet(weslaco,TX)for recall n242454440. After the software update, the vehicle entered 'limp mode' and threw a permanent fault code p2817 (solenoid 8 stuck off). The dealership and gm executive resolution (case #86918646) have confirmed this is a mechanical failure of the valve body, but are refusing/delaying the remedy due to a branded title. The vehicle is currently grounded and unsafe to drive as it risks rear-wheel lockup. Gm has failed to provide a timely remedy or alternative safe transportation.

To whom it may concern, I am writing to formally file a complaint regarding my 2020 Chevrolet Silverado 1500 diesel and to request immediate review and assistance from general motors. I purchased this vehicle from a gm dealership in 2024 with approximately 70,000 miles for roughly $42,000. The vehicle currently has approximately 121,000 miles. Since purchasing the vehicle, it has suffered major breakdowns approximately every three months, requiring repeated costly repairs and making the vehicle unreliable for regular use. Most notably, the vehicle experienced a full transmission failure at approximately 103,000 miles — just after the factory warranty expired, requiring complete transmission replacement at my expense. To date, I have spent nearly $20,000 in repairs, including but not limited •full transmission replacement •two alternator replacements •glow plug system failure •coolant control valve failure •engine control / computer module failure •transmission cooling system failures •ongoing electrical system issues •additional drivetrain and mechanical problems these are critical powertrain, electrical, and engine management components — not routine maintenance items. The repeated failure of such systems strongly suggests underlying manufacturing or design defects. The vehicle has been properly maintained and serviced, yet continues to experience serious and recurring defects well beyond what would be considered normal wear and tear for a modern diesel truck. At this point, my total investment in this vehicle exceeds $62,000, and I am left with a truck that I cannot trust and that has become financially unsustainable to own.

Transmission bucks and truck just stops for no reason.

During an extreme cold event in interior alaska (–44°f), the vehicle experienced a sudden emissions?system failure that triggered an epa?mandated limp mode, limiting the vehicle to 5 mph on high?speed highways. This created an immediate life?safety hazard because it was impossible to maintain a safe speed or exit the roadway due to snow berms. Prior to the failure, the vehicle displayed “service emission system” warnings and multiple dtcs related to the reductant heaters and sensors. A dealership technician later confirmed a “burnt pin” at the reductant pump connector, consistent with thermal?electrical overload. This failure mode matches gm’s TSB 21?na?006, describing connector overheating in cold climates. After the repair, the vehicle continued to exhibit safety?critical symptoms, including harsh downshifts, delayed engagement, and jerking during deceleration, consistent with recall 26v083000 (rear?wheel lock?up risk). The vehicle also continues to emit an electrical burning odor in cold temperatures, consistent with recall n192206310 (block?heater fire risk). The only gm dealership in the region issued a “termination of business relationship,” preventing access to all recall and warranty repairs. This has created a 321?mile “service desert,” making it impossible to obtain federally mandated recall remedies. The vehicle remains unsafe to operate due to unresolved transmission, electrical, and propulsion issues.

The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving approximately 5 mph and exiting a parking lot, the rear wheels locked up as if the brake pedal was depressed. There was no warning light illuminated. The vehicle was stopped and shifted to park(p), and the vehicle was turned off and restarted several times to reset the vehicle; however, the rear wheels were still locked up. The contact disconnected the battery cables and was able to unlock the rear wheels. The contact stated that the failure was intermittent, but was a recurring failure. The contact had taken the vehicle to a local dealer, where it was not diagnosed, and the vehicle was not repaired. The contact researched online and related the failure to NHTSA campaign number: 26v083000 (power train); however, the VIN was not included in the recall. The manufacturer was not informed of the failure. The failure mileage was approximately 92,000.

Transmission/ torque converter. Truck feels like you are riding over rumble strips and shaking steering wheel. Confirmed by dealer. No warning signs.

The timing chain failed. It is at the dealership available for inspection. Vehicle was unable to accelerate correctly while driving. If it had blown a valve or locked up the engine we would have been stuck on the highway with my kids in the vehicle. Problem has been confirmed with the dealer. It is a known defect with this vehicle but my VIN was not one that was recalled. No issues had came up before it failed. Just went to accelerate and you could feel it slipping and the truck stuttering forward.