2022 CHEVROLET SILVERADO 1500 reports

ENGINE

My truck was driving fine down the road and started getting a knocking sound. I had a tow truck come pick the truck up and take it to the dealer, after about a week they advised I needed a new motor

POWER TRAIN · ELECTRICAL SYSTEM · FORWARD COLLISION AVOIDANCE

Traveling on interstate highway at 70 mph when the truck engine went to idle and transmission tried to go into park. The dash just flashes "service transmission" and and other warnings. Engine still runs but can't shift out of park. Shifter is not responding to move the truck. Engine can't come off idle. Turn off engine. Power button will turn power on or off but won't crank engine. 4 ways flash for awhile with dash flashing then everything go blank. All electric power is lost for awhile and then dash starts flashing and 4 ways start flashing for awhile. This cycle keeps repeating. Truck has to be loaded on a truck to tow away. This is the 3rd time is has done this problem but at lower speeds before. Dealer can't find the problem yet.

POWER TRAIN

The vehicle intermittently experiences transmission or drivetrain slipping, shuddering or juddering, and shaking while being driven. The symptoms are inconsistent and there is currently no check-engine warning light. The problem has not yet been diagnosed or confirmed by a dealer. I am concerned that the condition could worsen and cause loss of propulsion, unexpected shifting, or loss of control. The vehicle is equipped with a diesel engine and is within the model family described in NHTSA recall 24V-797 involving transmission control valve wear. The vehicle and affected components are available for inspection upon request.

POWER TRAIN

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving at an undisclosed speed, the transmission shuddered and shifted hard. There was an abnormally loud thumping sound coming from the engine compartment while accelerating. The vehicle was towed to a dealer to be diagnosed; however, cause of the failure was not yet determined. The vehicle was taken back to the dealer where it was diagnosed and determined that the transmission fluid needed to be flushed and refilled. The vehicle was taken to another dealer, and an oil leak was found. The contact was informed that a software update was needed, and that several unknown parts in the engine and a wiring harness and oil cooler needed to be repaired. The failure mileage was approximately 15,000.

SUSPENSION

A leaf spring broke on rear suspension. Bought a gm leaf spring from a dealer and gm won’t cover only because an independent shop did work. Truck is a personal vehicle not used in hauling. In my opinion and because even dealer where I purchased vehicle said they had never seen this happen it is a defective part. Only reason for gm to not stand behind it was repair not done at dealer. Truck has 112000 mi.

POWER TRAIN · ELECTRICAL SYSTEM · ENGINE

The transmission it erratically shifts and has a roaring sound. I also says shift to park when it is in park. It wont start when it is cold it just cranks and cranks it has since i bought it. Well when my kids and I are going down the road and the transmittion randomly starts up shifting or down shifting and whenit goes out its gonn lock up probably where fever we are. as for the starting thing when its cold its isnt the ideal to have to go build a fire in the garage just to get my truck to start during an emergency. I have had a garage hook it up to a computer to see if it was throwing any codes. It wasn't except a brake sensor. I bought this truck 2 years ago and have nothing but trouble with it shifting and and the dash always says shift to park. this is one of the worst Chevrolet trucks i have ever bought. it only has around 70000 miles on it. I had the truck about 3 month when the transmittion issue started. It has never started when it was cold out side the whole time I have owned igt.

ENGINE

Engine is the 6.2L V8. Engine has started consuming oil. Consumed approximately 3 quarts of oil over 4k miles. 0 signs of external leakage.

ENGINE

I took my truck in to have a bad fuel pump module looked at. During the inspection they found some metal in the oil and it was confirmed by more being in the oil filter. This truck had previoulsy been cleared on the NHTSA Campaign 25V-274, but now it appears that it is a part of that recall. The dealer has initiated the work with the chevy corporate offices and I am working to secure a rental/ loaner car. I am filing this in the event there are any issues getting the new replacement engine.

ENGINE

Coolant Control Valve is malfunctioning. Check engine code P1098, Running Fans Loud cooling fans running at full blast shortly after turning off the engine. General Motors issued special coverages N252508341 extending coolant control valve warranty protection up to 15 years or 150,000 miles for select 3.0L Duramax vehicles. Unfortunately, GM says my VIN isn’t covered by the extended warranty even though it has all the same issues as those that are covered down to the check engine code notes on their bulletin N252508341.

UNKNOWN OR OTHER

I recently took my vehicle in for maintenance work on my transmission. I was informed that my vehicle was showing code P0747 which was under a special coverage warranty by GM. I then took my vehicle to our local GM dealership and was told that my vehicle does not qualify for the special coverage warranty N242454441 because my VIN number was not attached to the parts and the best I could do was contact GM. I reached out to GM to see if I could get a clearer understanding and my claim was denied. I spoke with a very helpful lady that informed me she would have their area technician reach out to me to see what could be done. After a few voicemails he did return my call to let me know GM would not be helping with reimbursement because the VIN was not attached to the part numbers. He ended with telling me that parts wear out and there was no proof that our 2022 Chevrolet Diesel Silverado 1500 was included in the special coverage warranty. I am reaching out because this is the second time we have had issues with trying to get recalls/warranties covered by Chevrolet and not been successful. I am currently looking at GM's special coverage N242454441 - This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. The repairs will be made at no charge to the customer. Please explain to me why my vehicle is showing this code and once again I am being told I will get no help from Chevrolet? This is a problem and I feel that we fall under this warranty.

POWER TRAIN · ENGINE · FUEL/PROPULSION SYSTEM

I experienced a crankshaft bearing failure while driving my 6.2L V8 Chevrolet Silverado on the highway / freeway. Thankfully I was able to exit highway / freeway to avoid a car collision due to loss of power. My truck was towed to a certified Chevy dealer. This is a known issue for 2019-2026 6.2L V8 L87 engines. The truck was previously inspected by a certified Chevy dealer for prior L87 engine recall. It passed and they changed the oil type to 0w-40. Prior to this event, my truck was at the dealer for a low oil pressure issue / oil pan replacement. I picked it up from the dealer after the vehicle was repaired and drove it for about three days and then experienced the crankshaft bearing failure. No warning lamps illuminated prior to failure. My truck is currently at the dealer waiting for a new engine.

ENGINE

The vehicle has blown 3 motors in 3 years. I took felivery 3/17/23. The first engine blew at 8,000 miles on 10/27/24. The second one blew 8/29/25 The 3rd one blew 4/12/26 at 52,000 miles on the vehicle.

POWER TRAIN

Special Coverage Program" (N242454441 While driving, the vehicle experienced sudden, severe shifting issues and entered a dangerous transmission "Limp Mode" severely limiting vehicle speed and power in live traffic. An OBD-II diagnostic scan retrieved active trouble code P0747 (Pressure Control Solenoid 'A' Stuck On). This indicates a well-documented mechanical defect in the transmission valve body covered under GM Special Coverage Program N242454441. [1, 3, 4, 5, 7, 8] Upon contacting my local Chevrolet dealership service department, I was informed that due to catastrophic backlog and part constraints, the dealership cannot physically scan or diagnose the vehicle for six months. The manufacturer's network is actively failing to provide a timely safety remedy for a known powertrain defect, leaving a hazardous, malfunctioning vehicle on the road without a resolution or substitute transportation.

UNKNOWN OR OTHER

Incident Description:While driving my 2022 Chevrolet Silverado at highway speeds, the front passenger-side bumper outer filler panel (fascia molding) completely detached from the vehicle without warning and flew off into active traffic.The factory plastic mounting clips and tabs failed entirely under normal driving conditions. Because the panel flew directly into the path of trailing vehicles, this defect creates an immediate and severe road hazard that could easily cause a multi-vehicle accident or serious injury.This is a known engineering and structural defect shared across this vehicle platform, yet no safety recall has been issued for the Chevrolet Silverado to protect the public.

POWER TRAIN

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving 55 MPH, the vehicle unexpectedly stalled while attempting to accelerate, with the check engine warning light illuminated. The contact stated that the rear wheels locked up due to the failure. The vehicle was pulled over to the side of the road but was unable to exceed 3 MPH. The vehicle was restarted. There was a burning oil odor, but the contact was unsure if the odor was coming from the vehicle or another vehicle nearby. The vehicle was taken to the dealer to be diagnosed, and DTC: P0700 (Transmission Control System) and P2714 (Pressure Control Solenoid Performance/Stuck Off) were retrieved. The contact was informed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure by phone, and the contact was referred to the NHTSA Hotline for further assistance. The failure mileage was approximately 81,700.

ENGINE

I did the 0w-40 oil swap and now my truck is having more issues than before the recall, doing a “oil consumption test”

ENGINE

NHTSA VEHICLE SAFETY COMPLAINT Vehicle: 2022 Chevrolet Silverado K1500 Trail Boss Engine: 6.2L V8 VIN: [XXX] Selling Dealer: Harris Hankins Chevrolet, Bay Springs, Mississippi I purchased this 2022 Chevrolet Silverado K1500 Trail Boss from Harris Hankins Chevrolet in Bay Springs, Mississippi. The truck is equipped with the 6.2L V8 engine and has experienced repeated and serious engine failures. The vehicle is currently operating on its third engine. The original factory-installed engine suffered a major engine failure at approximately 27,000 miles. The vehicle was taken to a Chevrolet dealership, where the original engine was replaced. The second engine failed within approximately 30 miles of leaving the dealership following the first engine replacement. This failure resulted in the vehicle requiring another engine replacement. The truck is now operating with its third engine. I have periodically noticed abnormal valvetrain noise coming from this third engine. Considering that the first two engines experienced major failures, I am very concerned that this abnormal valvetrain noise may indicate another developing engine problem or potential engine failure. This 2022 Chevrolet Silverado has therefore experienced two major engine failures at very low mileage and is now on its third engine, which is periodically exhibiting abnormal valvetrain noise. I believe these repeated engine failures represent a serious vehicle safety concern. A sudden engine failure or loss of propulsion while traveling at highway speeds or in traffic could create a dangerous situation for the driver, passengers, and other motorists. I am requesting that the National Highway Traffic Safety Administration (NHTSA) formally document my vehicle’s history and investigate these repeated failures involving the Chevrolet/GM 6.2L V8 engine. The dealership has the service records and repair documentation concerning the previous engine failures and engine replacements. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

ELECTRICAL SYSTEM

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving approximately 45 MPH, the vehicle lost automotive power. The message "Shift to Neutral and Restart" was displayed. The contact pulled over to the shoulder of the roadway and restarted the vehicle; however, the failure progressed. The vehicle was towed to a local dealer and remained at the dealer for additional diagnostic tests. The vehicle was not repaired. The contact stated that prior to the failure, while hauling a trailer, the message "Reduced Power" was momentarily displayed. The manufacturer was made aware of the failure. The failure mileage was approximately 51,000.

ELECTRICAL SYSTEM · ENGINE

Purchased vehicle in August of 2025 and there was an open recall for engine issues at that time. Took vehicle back to dealership in October or November for dealer to inspect. The vehicle passed the engine test and oil was changed to a heavier weight. From October/November 2025 I’ve been noting that there’s been a significant loss of engine oil prior to scheduled maintenance that requires anywhere between 4-5quart top off every three months or so. Feels like the vehicle is sluggish and has no “get-up”. Also, the Auto Emergency Brake light/system keeps malfunctioning. Even after it’s been replaced several times the light comes back on and you’re not able to control the forward collision gauge.

ELECTRICAL SYSTEM · ENGINE

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving at 70 MPH on Interstate 10, the vehicle stalled. The contact was able to pull the vehicle over; however, the vehicle failed to restart. A battery warning message and a no-start message were displayed. The vehicle was towed to a local dealer, where it was diagnosed that the engine was locked due to bearing failure. The engine was replaced. The manufacturer was notified of the failure via phone call and written letter, and the contact was provided with service points. The failure mileage was approximately 53,874.

ENGINE

Coolant Control Valve is malfunctioning. Running Fans: Loud cooling fans running at full blast shortly after turning off the engine. Extended Warranty Coverage: General Motors issued special coverages (N252508341 / N252508340) extending coolant control valve warranty protection to 15 years or 150,000 miles for select 3.0L Duramax vehicles. Unfortunately, GM says my VIN isn’t covered by the extended warranty even though it has all the same issues as those that are.

ENGINE

Engine failure. 5.3L motor

POWER TRAIN · ENGINE

July 11, 2026 I experienced a lifter failure. Towed to GM dealer on July 13th. Dealer comfirmed lifter failure and camshaft damage and metal contamination throughout engine. Dealer installed replacement engine using my mechanical breakdown policy since I was out of factory warranty. Picked up truck one month later with new engine and the transmission started slipping and shuttering. Took back to dealer who claimed metal fragments in fluid and said transmission needed to be replaced. I then made a second claim on my mechanical breakdown policy and the dealer replaced the transmission. All of these issues are known issues with the engine and transmission.

POWER TRAIN

45,000 Mile 2022 Chevy Silverado 1500 LT - Vehicle began rough shifting, slipping gears, failing to engage into drive, and shuddering at constant acceleration. Transmission valve body failure and replacement needed - confirmed by certified Chevy dealer. Awaiting receipt of warranty valve body from GM, but part has not been released by GM - estimate from dealer is 5+ weeks for receipt of the part based on recent experience with another customer requiring the same repair.

FUEL/PROPULSION SYSTEM

I was driving vehicle through town when I suddenly lost all power and luckily was able to get off the road. Onstar sent a code and it was a fuel pump module

ENGINE

Lifters failed at 4,000 miles.

ELECTRICAL SYSTEM · ENGINE · FUEL/PROPULSION SYSTEM

Engine abruptly lost power in middle of high speed lane. I did not have enough momentum to make it to safety, totally on the shoulder, Transmission locked up, couldn’t move vehicle to safety, Extremely dangerous situation!!!

ELECTRICAL SYSTEM · FORWARD COLLISION AVOIDANCE

This vehicle suffers from parasitic electrical drain. Is the car sits for a few days, it draws power down from the battery, which then causes the collision detection system to stop functioning.

ELECTRICAL SYSTEM · SERVICE BRAKES · ENGINE

While traveling in bumper to bumper highway traffic in my 2022 Chevrolet Silverado RST, I attempted to accelerate and the vehicle suddenly malfunctioned. I experienced sever loss/restriction of propulsion and the vehicle would not respond normally to accelerator input. I was able to maneuver toward the shoulder of the road while avoiding a major multi-car pile up involving innocent motorists. When I attempted to stop, I did not have normal braking ability and was unable to stop in the manner I expected. I had to use the shoulder of the highway to slow the truck down until I could come to a complete stop. This created an immediate risk of serious or fatal collision on the highway, and as I maneuvered the truck out of traffic to the side of the road. Had I been unable to reach the shoulder of the road, I could have been struck by surrounding traffic. Had this failure occured un an urban area or at an intersection, near pedestrians, or at a school bus stop- I could have seriously injured or killed people or myself. After I was able to come to a complete stop. I shut it off and turned it back on, then the truck read there was no gas left (I had a 1/2 tank). This incident is not isolated electronic glitch, I have experienced electrical malfunctions including the truck failing to start, unlocking, responding at all. This all occured after an engine replacement due to a recall. I am concerned that there are unresolved electrical and power-distribution, communication-network, propulsion or braking issues that presents a serious safety risk to myself and others. My concern is that if this malfunction occurred on my drive to work in the city, around pedestrians- it could have resulted in multiple fatalities.

SUSPENSION

The front upper control arm failed and the driver side wheel collapsed. There was no warning. Luckily I wasn’t pulling my RV camper down a mountain, it could have been catastrophic . I towed it to Carson Chevrolet. They gave me an estimate of $6,000 + for repairs. They had no reasonable explanation.

ENGINE

Component/system failed: The 6.2L L87 engine. The engine ultimately seized and the vehicle became inoperable. The engine should be available for inspection because it is being replaced under GM Special Coverage N252494003. Safety risk: The engine unexpectedly shut off while driving at highway speeds. Loss of propulsion in traffic creates a significant collision risk. The inability to restart left the vehicle disabled. Confirmed: An independent repair facility confirmed that the engine was seized prior to towing it to the GM dealer. Yesterday the GM dealer confirmed i had a seized engine and it was going to be replacement under N252494003 special coverage entention. Inspections: My truck was inspected in October 25, for the recall. My truck passed this test, and was subsequently was told my oil spec has been revised. Warnings/symptoms: no warning was given

POWER TRAIN · FUEL/PROPULSION SYSTEM

2022 Silverado RST with the L87 engine loss propulsion in traffic of Memorial day weekend with approximately 43,800 miles on the vehicle. Has since been fixed by Chevrolet dealership. Also passed their Pico test, changed oil viscosity and oil cap still failed after their test.

ENGINE

The vehicle previously received the official GM Recall Campaign 25V-274 remedy/inspection, but suffered catastrophic engine failure and sudden loss of propulsion afterwards.

ELECTRICAL SYSTEM

The digital dashboard display began to flicker. Off more so than on making the dash unreadable. No speedometer, no fuel gauge, no gauges of any kind. When you received an audible notification from the vehicle, you had no way to see the message. As far as any vehicular information, you were not able to see anything.

POWER TRAIN

I own a 2022 Chevrolet silverado 1500 that is jumping and jolting. There is currently a federal recall and the dealership is denying to fix it for free under recall because our VIN is not yet listed, despite the vehicle suffering from the exact transmission failure reported for the same year, make and model. This matches the exact parameters of Safety Recall N252516560. The vehicle is unsafe to drive

ENGINE AND ENGINE COOLING

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that the engine temperature increased while driving approximately 60 - 70 MPH. The message “Reduced Speed due to High Temperature” was displayed. The temperature gauge increased to high and then down to low. There were no warning lights illuminated. The contact stated that the failure was caused by the coolant control valve. The vehicle was taken to the local dealer but was not diagnosed or repaired. The manufacturer was contacted and opened a case. The contact was advised that an error message needed to be displayed before moving forward. The failure mileage was approximately 65,000.

POWER TRAIN

Automatic transmission failed due to code P0722 (Output Speed Sensor signal lost). The vehicle experienced sudden loss of propulsion, violent/harsh shifting, and severe drivability issues while operating on the highway. Loss of forward motive power at high speeds creates an immediate collision hazard. The vehicle was previously serviced for transmission issues but the defect recurred. The vehicle remains parked and inoperable due to safety concerns.

POWER TRAIN · ENGINE

I have a 2022 silverado ltd with the 6.2. I purchased the truck about a month and a half ago the previous owner had the 40 weight oil recall completed prior to my purchase. I had the oil changed when it said 45 percent life remaining far before it was due a certified chevy dealer completed the oil change with the 40 weight correct oil. Well about 8 days ago I went out and started the truck and heard a clunk sound like a failing starter would make. So later that day I notice a ticking noise as well as a chirping noise. Coming from engine bay. I made note of it. Ever since the noise began I have kept close eyes on it the ticking and chirping rise and fall when I give it gas. Yesterday when I started it the clunk noise happened but this time I felt a shudder or stutter I looked at the rpms and they didn't move at all with the shudder. I have an appointment Monday morning to take it to the dealer I looked into the recall for the thicker oil. And learned that this motor is pretty much junk and multiple issues I haven't driven it since yesterday because the issues I'm having correspond with complete engine failure at any point and I do not want to be on the highway and it happen that would put me and other motorist at risk injury. There has been no warning lights no engine light just the initial clunk the first time and since that it's just been getting worse

ENGINE

The motor seized. My life was at risk. I was on the highway. The vehicle was reported to the Chevy dealership and diagnose that the motor is locked.

ENGINE

* Engine/ Yes available for inspection. * Has not happened yet, however the risk exists. * Yes, oil consumption and has been confirmed by dealer and monitored every 1,000 miles. * Been inspected by local dealer only. * Yes, low oil pressure light came on. I was 2 qtrs. LOW, XXX My vehicle was inspected and according to them "passed". 0W-40 was introduced and a new oil cap indicates the change. GM explains that it is acceptable to burn up to 2 qtrs. of oil between oil changes. They have me come to the dealer every 1,000 miles to check the oil level. I came back from a work-related function, putting approx. 220 miles. It was time for oil level inspection, and my engine was found to be 1/2qtr. LOW. I ask them to top it off and I was told; “we do not stock this oil in bulk; you have to buy a qt. and we'll put it in." I have been a car owner since I was [XXX], now [XXX] and have never heard such nonsense in my life. In fact, in my lifetime, I have NOT experienced engine burning oil. This is a 6.2 liter with 57,700 and my fear is that something catoptric will happen to the motor resulting in no recourse. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN

Transmission failed at 38,000 miles. Downshifted violently while driving and couldn't keep up with the 35mph speed limit. Was luckily not on a highway or far from home. Dealership noted it's a common valve body issue in the transmission. No inspections, vehicle has a branded title (hail) and Chevy claims no responsibility for the transmission failure. 0 warning signs or issues.

ENGINE

I was driving down the road and all of a sudden the check engine light came on, the check the parking brake light came on, and the service electronic stability control system light came on. The engine then started making a knocking sound. These trucks have a known lifter issue. I had a 2021 that had the same problem. It was still under warranty so I was able to get out from under it. This one isn’t and they want $9,000 to replace the engine. There is a recall on the 6.2 liter but not for the 5.3 liter for some reason. These engines have an issue

ENGINE

While driving 65mph on the highway the engine locked up and shut down. There was a loss of propulsion and steering making it difficult to safely maneuver off the highway.

LATCHES/LOCKS/LINKAGES

The contact owns a 2022 Chevrolet Silverado1500. The contact stated that while driving at an undisclosed speed, the tailgate unexpectedly opened. The contact stated that the failure was a recurring failure. The dealer was contacted and stated that there was a related recall for the failure; however, the recall was only for vehicles manufactured in Canada. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 20,000.

ENGINE

The contact owns a 2022 Chevrolet Silverado 1500. The contact stated that while driving approximately 30 MPH and towing a trailer on Route 16 with his children inside the vehicle, within 10 minutes of driving, there was smoke coming from underneath the vehicle and entering the cabin. There were no warning lights illuminated. The driver pulled over safely. Additionally, the contact stated that there was no issue prior to the failure. First responders arrived on the scene but were unable to use fire extinguishers to contain the fire. The contact called 9-1-1. Within approximately 10 minutes, the vehicle was fully engulfed in flames, which reached an estimated height of 10 feet. A Police report and a Fire Department report were filed. The driver and his two children sustained smoke inhalation. The contact's daughter was vomiting; however, medical attention was not provided. The contact stated that a nearby vehicle and the trailer were damaged from the fire. The vehicle was towed to a tow yard. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and opened a case. The failure mileage was approximately 67,000.

POWER TRAIN

Transmission failure with no electronic warning or codes. Hard shifting was identified while under warranty but because no codes were present no action was taken to correct the issue.

ENGINE

Engine sudden loss of propulsion while driving on interstate w/out warning. Pulled to side and check engine light and hot oil warning came on prior to engine dying. Had to call tow and dealer says engine needs to be replaced but they won’t ship vehicle back after repair and it’s 4 hours from my house, that I need to pick it up

POWER TRAIN

When driving, the vehicle’s computer detects an issue with the vehicle’s transmission and throws a “Reduced acceleration. Drive with care” which causes a strong jerk like if the wheel locked up momentarily. The check engine also turns on and the vehicle stays stuck in 5th gear at all times. Code P0747 is thrown as well.

POWER TRAIN

VEHICLE: 2022 Chevrolet Silverado 1500, VIN [XXX] DEFECT: Transmission suddenly, violently downshifts from a high gear to a much lower gear with no driver input, at highway speed. Causes RPM spike, violent jerking, Check Engine Light, loss of vehicle control. Occurred 5 times. Not fixed despite 4 dealer repairs, 61 days out of service. 5/12/26 - 1st failure, 70+ mph on I-5, stuck in low gear. 5/14-6/8/26 - Repair 1, Bud Clary Chevrolet: valve body solenoid replaced. 6/13/26 - 2nd failure days later, Hwy 12 (no cell service), spouse + [XXX] infant in vehicle, forced to keep driving to reach safety. 6/13-6/17/26 - Repair 2, Harvest Chevrolet: same fault codes; valve body connector found loose. 6/17/26 - 3rd failure, same day picked up, same [XXX] location. 6/19-6/26/26 - Repair 3, [XXX] Chevrolet Diagnosed by TSB#25-NA-301: wiring found chafed/pinched. Dealer's own paperwork says cause of fault codes could not be determined. I requested full internal transmission inspection; declined. 6/26/26 - 4th failure, same day picked up, ~100 mi later, [XXX] [XXX], family in vehicle. Dealer denied promised tow after 4-hr wait; transport arranged. 7/1-7/17/26 - Repair 4, [XXX]: GM's national Technical Assistance Center directed wiring circuit replacement (GMTAC Case #XXX). Again requested internal inspection; again declined. Service tech said GM engineering was dictating repairs and I'd "just need to drive it until it fails again." 7/20/26 - 5TH FAILURE: XXX near mile marker 24 (Kalama/Woodland, WA), ~75 mph, [XXX] in vehicle. Uncommanded downshift nearly forced my truck into an adjacent semi-truck. Same day picked up from Repair 4. SUMMARY: Code P0776 present at every repair; P0716/P0717 recur. 4 fixes attempted, none resolved it. Internal inspection requested twice, denied twice. Near-collisions XXX and XXX. Infant in vehicle for 2 incidents. 2nd owner; active GM powertrain warranty through XXX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN

The vehicle experiences a sudden, violent drop into "limp mode" during active traffic acceleration. The internal Output Shaft Speed Sensor completely drops its signal, causing the vehicle to rapidly lose speed in active traffic lanes, creating an immediate and severe rear-end collision hazard.Diagnostic Evidence:Dealership (Crews Chevrolet) officially scanned the vehicle and documented history codes DTC P0722 (Output Shaft Speed Sensor Circuit No Signal) and DTC P0700. The dealership technician verified that the external wiring harness is fully intact, isolating the failure strictly to the internal transmission sensor.Manufacturer Actions:General Motors Corporate (Case thread::oxEmaLlrKKms4NDj0d9wJ0w::) is actively refusing to authorize the dealership to drop the transmission pan to replace this failing component under the active Bumper-to-Bumper Warranty. They are citing the "intermittent" nature of the safety hazard as a reason to deny diagnostics, forcing me to either operate an unsafe vehicle or leave it parked.