Power Train Problems of Chevrolet Silverado 2500 - part 1

I am writing to express my serious concern and frustration regarding the unresolved recall on my 2020 Chevrolet Silverado 2500 (VIN: [xxx] ). Despite multiple visits to multiple dealerships, I was repeatedly told that the necessary parts to complete the recall repair were on back order and instructed to “wait for parts. ” no interim solution or assistance was ever offered. As a result of this delay, my vehicle broke down without warning, leaving me stranded on the side of the road. This created a hazardous situation and significant disruption to my day. To make matters worse, I had to pay out of pocket to have the truck towed to a repair shop in an effort to get it operational—an expense I should never have incurred given the known recall and repeated attempts to have the issue corrected by Chevrolet. I have been a loyal Chevrolet owner and have always trusted the brand for its quality and dependability. However, this delay and lack of proactive support is causing significant inconvenience and eroding that trust. This situation is unacceptable for several reasons: 1. Safety risk and recall obligation: Chevrolet acknowledged the defect by issuing a recall, yet I have been forced to operate a vehicle that does not meet your own safety standards for months. 2. Repeated service attempts with no resolution: I followed the proper process and visited an authorized dealer multiple times, only to be turned away each time with no solution beyond “wait for parts. ” 3. Breakdown and financial loss: the vehicle failure and subsequent towing expense are a direct consequence of Chevrolet’s inability to provide timely parts or alternative accommodations. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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Transmission valve body issue.

In December of 2024 safety recall n2424440-01 was applied. On the morning of Saturday August 23, 2025 while driving on a two (2) lane highway with the cruise control set to 60 mph the vehicle “shuttered” then the shifted into a lower gear locking the rear wheels bringing the vehicle to an almost complete stop in very short distance. I was able to pull off the road out of traffic. Since it was a light traffic morning, no one else was close limiting the risk to me. Had there been anyone behind me they would have been caught off guard by the sudden stop with no signal of brake lights showing. The vehicle is in “limp mode” and will not exceed 35 or 40 mph. The vehicle will shift in to park and neutral. It will not move in reverse forward. The vehicle has been transported to the nearest Chevrolet dealership for diagnostics and service.

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“shift to park” warning light appears even when vehicle is in park. Faulty solenoid in steering column.

See all problems of the 2023 Chevrolet Silverado 2500 🔎.

Sudden jerk power train and deceleration while driving and towing 5th wheel, immediate loss of power and could have been catastrophic. Gm has a known defect that requires immediate attention and investigation to affirm this is a broad national problem with the allison 10 speed 10l1000 transmission, specifically the defective transmission control valve body assembly. Do we have to wait for multiple family members to be killed or seriously injured due to this known defect? time for action and resolution. My local dealer tells me this is bigger than anyone knows. . . Why?.

While towing my travel trailer at 55 mph the truck rear tires locked up causing an alerting situation. The transmission automatically shifted out of tow/haul mode, the cel illuminated and the following message appeared on the dash "reduced acceleration condition, drive with caution". This event happened a total of 3 times within a 20 mile distance. Because it was a short burst and I was traveling on a straight section of roadway, the risk of accident was moderate. This would have been a high risk of danger if I were on a curving downhill section of roadway. The situation was confirmed by my local dealer through a diagnostic check exhibiting a p0747 and p0700 error code. There were no cels or other warnings prior to the lockup. The diagnosis was a problem with the transmission valve body. A new valve body was ordered and arrived 14 days later. After the new vb was installed the symptoms appear to be gone after driving about 50 miles.

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Truck went into “reduced acceleration” or “limp mode” while pulling my camper. Took truck to kool Chevrolet in grand rapids, mi. They confirmed it is a bad valve body on the transmission. No estimated time from chevy on getting a replacement valve body. They confirmed this is a widespread known issue and could be weeks if not months. I have a family camping trip planned for the upper peninsula of michigan in mid July and they aren’t giving not giving me any indication that I could have my truck back by then.

Gm has acknowledged the problem and has issued a recall on transmissions effecting 2020 – 2022 Chevrolet Silverado 2500/3500 heavy duty trucks equipped with diesel engines manufactured between January 28, 2019 – January 11, 2022. Our truck, a 2021 Chevrolet Silverado 2500hd, was taken in to d’arcy Chevrolet in morris, IL to have recall n242454440 – momentary rear wheel lock-up – transmission and engine control module programming with sp. Under this recall dealers will install new transmission control module software, free of charge. Gm will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. After the recall service was performed we were told by the dealership that the transmission needed to be replaced. It clearly states under the recall performed that gm is to provide special coverage to cover repairs that are identified by the remedy software as containing a defective control valve. Also, by law, dealers are never to charge for recall repairs. But gm and the d’arcy Chevrolet are refusing to cover the repair costs for the transmission under special coverage program.

While driving my truck it shifts into tow mode by itself, also on June 1st 2025 my truck shifted to 4 low by itself .

Owner from brand new (16 miles) multiple complaints through ownership of harsh shifting, jerky throttle on and off, excessive engine braking, and have been stuck on the side of the road 3x due to the same situation. Never was a code thrown so I was continuously told there’s “nothing wrong. ” on [xxx] I was driving [xxx] out of denver making the climb towards [xxx] to home. As I had my cruise control set at 65, out of nowhere my truck locked up what seemed to be the rear wheels completely, causing my rear end to sway violently. I immediately slowed down and pulled over with no indications or lights being illuminated on my dash. I turned the truck off and let it sit for 10 minutes and restarted it. Having no issues I signaled back onto [xxx] and the truck accelerated to nearly 65 with no issues. As I hit 62 on the dash it again locked up the rear tires. I again pulled over, this time questioning what could be causing this, knowing the first time indeed was what happened. I put my truck into park, and still had no warning lights or check engine light. I then put my truck into neutral and then clicked the auto button thinking maybe something with the rear end is locking my brakes up. Upon doing so I again entered the roadway, big mistake on my part as this time upon reaching 60+mph all 4 tires simultaneously locked up. How I didn’t roll, I have no idea. Easily the scariest set of events I’ve ever faced while driving and that’s considering all of the insane drivers on our roadways today. I literally lodged a complaint with Chevrolet the same day I bought this truck before ever even leaving the dealers lot, and have had zero communication from them other than myself reaching out. They have ignored the problem literally from day one and it easily could’ve cost me or someone else their life. I’m appalled that to date they are still selling these trucks, replacing the valve bodies with the exact same faulty ones, and allowed to put others in danger constantly. Information redacted pursuant to the freedom of information.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that while driving at 45 mph, the vehicle failed to accelerate as intended while depressing the accelerator pedal. An unknown warning light illuminated, and a transmission message was displayed. In addition, the rpm was fluctuating. The vehicle was taken to the dealer, where it was diagnosed that the transmission valve body needed to be replaced. The vehicle was not repaired because the part for the repair was not available. The vehicle remained with the dealer unrepaired. The manufacturer was not informed of the failure. The failure mileage was unknown.

The contact owns a 2024 Chevrolet Silverado 2500. The contact stated that while driving at various speeds, the vehicle lost motive power and decelerated. The vehicle was taken to the local dealer to be diagnosed, and it was determined that the transmission valve body was faulty. The valve body was replaced and reprogrammed, but immediately after retrieving the vehicle, the failure reoccurred while driving approximately 45 mph. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 62,000.

When vehicle is placed in park the safety lock will not allow the key to turn to the "off" position and be removed. The vehicle will not turn "off" any further than the accessory position. Sometimes after turning the steering wheel back and forth while working the ignition the key will release. If this does not work after a minute or so, sometimes you can start the truck and immediately turn it all the way off and get the key to release. If all of that fails the last option is to disconnect the battery. It is an intermittent issue that will happen 5 times a day for a week, and then will not replicate again for a week or two.

See all problems of the 2022 Chevrolet Silverado 2500 🔎.

Component/system: the allison 10?speed (10l1000) transmission valve body catastrophically failed on may?11,?2025, while driving Sunday afternoon down galveston seawall blvd. The truck abruptly dropped from 45?mph into limp mode in heavy traffic, forcing me to pull into the bike lane to avoid being rear?ended. The vehicle remains at classic Chevrolet (galveston,?TX) awaiting the oem valve body—which is on national backorder—and the complete transmission assembly is likewise unavailable. The failed valve body and transmission are available for inspection upon request. Safety risk: unexpected limp mode and gear lock?up in heavy traffic create an immediate risk of rear?end collisions or side impacts as surrounding drivers have no warning of sudden deceleration or loss of drive. Reproduction/confirmation: classic Chevrolet diagnosed and confirmed the failed valve body on may?12,?2025. Their service advisor and my assigned gm case agent (#70179205) have both acknowledged the defect but report no parts available for repair. Inspections: the vehicle has been inspected by classic Chevrolet under warranty. Gm customer care has reviewed my service orders and correspondence. No police or insurance inspections occurred, as no collision ensued—however, the roadside inspection at classic Chevrolet confirmed the mechanical failure. Warnings/symptoms: there were no prior warning lamps, messages, or symptoms before the failure. The valve body failure occurred without any advance indication.

Driving on interstate 10 in arizona transmission suddenly shifted down hard and then into limp mode with check engine light. Took to auto nation gilbert az may 10th they diagnosed valve body failure. Safety was at risk to to vehicle suddenly slowing down in heavy traffic.

While driving to work one day I came to an intersection and stopped. When I went to accelerate to take off my truck shuttered and made a loud noise. The truck immediately went into "reduced power mode" with no warning. I could no longer drive the appropriate speed limit and had to constantly pull over to allow other vehicles to go by. This caused a traffic jam on narrow roads to get the vehicle to a safe spot. My truck only has 43,000 miles on it. The dealership confirmed that the truck has a bad valve body and needs to be replaced. The truck is currently sitting at the dealership and has been since may 15, 2025. As of today, July 18, 2025, gm still does not have an eta on when the part to fix my truck will ship out.

70,000 mile complete transmission failure despite being serviced on-time, as per the guidance. Failure happened while driving and it became dangerous to try to maintain highway speed. Quoted $8390 to replace by the local chevy dealership and quoted 4-6 weeks delivery for backordered parts. This is an unacceptable situation that gm and other manufacturers have artificially manufactured. They design everything to the bare minimum to save fractions of a cent per part, and then they intentionally make the parts unavailable and then the dealership pushes you to trade the broken vehicle in at a massive loss just so you can get back on the road in a newer, more expensive vehicle. This sort of behavior is causing immense financial harm to american families.

See all problems of the 2018 Chevrolet Silverado 2500 🔎.

My truck has been having the "shift to park" warning for quite a while now. Truck has roughly 72000 miles. Before it would happen intermediately, now it happens all the time. Often I have to leave my truck unlocked for long periods of time due to this malfunction. Hoping my battery will still have power to restart the next time. Reading and researching this issue online, it is a known fact that this is a widespread problem and gm needs to step up and issue a recall.

My business work truck started not shifting properly. I dropped it off at mirak Chevrolet in arlington, MA on 4/29/25 and they diagnosed the vehicle needing a valve body part # 24065357. Gm/Chevrolet has been unable to source this part and was unable to provide an eta. I immediately contacted gm and my case # is 51184758. Then it was approved and escalated for a new transmission and same issue unable to source part and no eta. This is my business vehicle that has not been operable since 4/29 due to a manufacturer issue. No fault on my end. This is a brand new vehicle that should not have these type of issues. I have lost revenue, income, jobs, and I don't have a replacement vehicle. I have a loan on this vehicle that I am making payments towards but there is no end in sight. It has been a month with daily calls to gm for an update or for someone to call me back and nothing. I need my work truck back. This has caused extreme financial stress. I need help.

Transmission was acting funny. Check engine light came on. Took it to a reputable transmission shop who stated it needs a full rebuild due to bad torque converter. $5500. The truck only has 65k mi.

See all problems of the 2016 Chevrolet Silverado 2500 🔎.

My truck had approximately 55,000 miles on it when the incident happened. I pulled out of a store and began going down the road and the rear wheels locked up slamming everything forward and the truck and leaving us almost rear ended. The truck was stuck in one gear after breaking the tires free with check engine lights flashing and the dash saying reduced power. It has since been at the dealership for 3 months waiting on a valve body with no end in sight. There is apparently a national back order on these faulty parts because of how common this high speed rear wheel lockup is so I am left without a vehicle or an end in sight.

While driving the transmission shifted very hard felt like it was going to shatter or lock up this happen twice. It also lacked power due to not shifting properly. It coded for transmission issue. I spoke to 2 different Chevrolet dealers service writers, the 1st did noy have a transmission but told me this was a known issue that the valve body for the transmissions fails and recommended another dealer. The dealer notified transmission valve block failed a known problem with the valve block being on back order due to this issue. The truck know sits at the shop awaiting repair. If the transmission fails or locks up in a 2500 truck, could be towing a trailer like I was, would result in an accident.

Truck is under 105000 miles and needs a transmission due to a failed torque converter. First starts with erratic speeds in cruise control mode that is unsafe then will not shift into overdrive causing overheating issues.

The contact owns a 2021 Chevrolet Silverado 2500. The contact stated that upon reaching his destination and shifting the vehicle into park, the vehicle failed to recognize that the gear shift lever had been moved to park (p). The contact stated that the "please shift to park" message was displayed and the doors were unable to be locked. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was 25,000.

The contact owns a 2016 Chevrolet Silverado 2500. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power. No warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 146,000.

My truck has 50k miles and while driving down the road heard a loud pop and felt the truck jerk. Then the truck entered low power mode and the engine light turned on. I took it to the dealership and they are contributing it to the transmission valve body. Has been in the shop for 3 week so far and still no update when the part will be available.

I purchased a 2024 Chevrolet 2500 hd crew cab high country and reported harsh shifting after 3 months 3,000 miles and told that nothing was wrong. Brought truck back in in February 2025 with 12,000 miles due to erratic shifting and loud whining noise. After 4 days in the shop they agreed that there was a problem but didn't know what the problem was. One week ago on Sunday 3/23/25 while driving the engine would rev up for acceleration but didn't speed up. Got to my son's house two miles away. I went leave 20 min. Later and the transmission died completely. It would not go forward or reverse.

Purchased a new 2024 chevy 2500hd (custom, 6. 6l gas) on 12/14/2024. After doing some research on maintenance items for this vehicle, I observed the following: rear axle - little over a quart low front axle - a little over . 5inches low it was determined these fluids were not filled to the proper level from the manufacture. The dealership and extended warranty company (provide by the dealer) refused to warranty these issues.

Truck has less than. 30k miles on it. Went into limp mode, was less than a mile from home. Parked it had it towed to nearest dealer. They then informed me they have 4 other truck sitting and waiting for gm to fix parts with allison 10 speed transmission valve body. Dealer says it is at least 4 month wait to get my truck back. I work out of this truck for my business, and still have to pay my $1260 truck payment monthly for a truck that I can't use. Then they tell me they cant give me a loaner truck, only a car that I have to pay out of pocket daily for since chevy only covers $44 a day and cheapest rental is at $50 a day. I cant move trailers and equipment with a car. Gm knows there is a problem with these transmissions and won't do anything about it. I bought new thinking I'd be doing okay with extra warranty, but here we are with no real solution. Please help!!!.

I was driving with family on the highway when the rear wheels locked up causing seatbelts to lock up and abruptly stop violently.

Have had issues since purchase of paint chipping severely / cloudy. Transmission shudder and “jumped forward” when coming to a stop. Lighting system “blinked” or went dark and come back up a few seconds later while driving.

While driving the truck it will have a hash upshift which has happened on five different occasions plus on two other occasions after first startup and drive the transmission will not shift out of third gear it will just wind up the rpm's as if transmission is stuck in third gear. I have to let off throttle then accelerate and back-off a couple of times to get transmission to shift out of third gear. The software upgrade is not a fix for this recall as it does not address the problem. The valve body installed in these ten speed transmission is a manufactures design flaw along with using inferior parts required for the safe operation of this vehicle. There are documented claims of the valve body failing causing catastrophic failure of the entire transmission and gm corporation will only cover the valve body. Gm has told it's customers that they will warranty the vb only that the other damages are not covered. The recall letter I receiver indicates that only the vb is covered. This is unacceptable. It is because of the vb failure that the transmission will suffered catastrophic failure, without a properly functioning vb the transmission cannot receive the lubrication it needs to function properly. I have not had the software update as their are reports of customers trucks going into limp mode shortly afterwards. Their trucks are then parked on dealer lots as parts are currently unavailable for weeks at a time in some cases months. These customers use these truck for their livelihood and they invested a large amount of money purchasing these trucks only to be told so sorry gm will not cover your claim even through it was our defective vb that destroyed your transmission. These trucks are not cheap to purchase nor to properly maintain.

The contact owns a 2021 Chevrolet Silverado 2500. The contact received notifications of NHTSA campaign numbers: 24v060000 (latches/locks/linkages) and 24v797000 (power train); however, the parts to do the recall repair were not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Truck would downshift hard coming of exit or slowing down. This would sometimes lunge you forward into the seatbelt causing it to catch. The transmission would also shift hard moving up to interstate speed between 50-60mph. The dealership has determined that the valve body has failed in the transmission.

Transmission needed rebuild at 108000 miles. Lifter failure in engine which damaged camshaft at 120000 miles. Each costing thousands in dollars of repairs probably close to $10000.