While driving on the highway our transmission cooling line completely separated at rubber hose to metal line crimp. This cause transmission fluid to burst out all over the vehicle including the windshield and trailer. Vehicle immediately stopped pulling and we barely were able to get to the side of the road. This also caused a catastrophic transmission failure costing approximately $10,000 to repair. GM covered some of the transmission cost but still left us with $5000 bill for a transmission line defect on a vehicle under 100,000 miles. This created a unsafe condition with the trans fluid on the windshield and immediate loss of drive. All maintenance was performed per manufacturers specifications and no warning signs/lights/leaks provided prior to the failure. I do have pictures of the failed transmission cooling line.
2020 Chevrolet Silverado 2500 transmission problems
33 complaints (30% of all complaints for this car). Typical mileage when it fails: 81,381. 1 crash reported.
- owner complaints
- 33
- of this car's complaints
- 30%
- typical mileage
- 81,381
- crashes
- 1
- recalls
- 3
Which part fails
Owners did not name a specific part.
At what mileage
Complaints by mileage at the time of the problem.
Chevrolet Silverado 2500 transmission problems in other years
Related recalls
Power train: automatic transmission: fluid/lubricant: valves/valve body
- What is wrong
- General Motors, LLC is recalling certain 2020 Chevrolet Silverado 2500, 3500, GMC Sierra 2500, 3500, and 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles that may have been repaired incorrectly under recall 24V797. The transmission control valve may fail and cause the rear wheels to lock up.
- Risk
- Rear wheel lock up increases the risk of a crash.
- Remedy
- Dealers will inspect the vehicles and update the transmission control software, free of charge. Owner notification letters were mailed March 6, 2026. Owners may contact GMC customer service at 1‑800‑462‑8782 or Chevrolet customer service at 1‑800‑222‑1020. GM's number for this recall is N252516560. Vehicle Identification Numbers (VINs) involved in this recall became searchable on on February 12, 2026.
Recall number 26V083000 · Recall details
Power train: automatic transmission: fluid/lubricant: valves/valve body
- What is wrong
- General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.
- Risk
- Rear wheel lock-up can increase the risk of a crash.
- Remedy
- 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. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1‑888‑988‑7267, Cadillac customer service at 1‑800‑458‑8006, GMC customer service at GMC 1‑800‑462‑8782 or Chevrolet customer service at 1‑800‑222‑1020. GM's number for this recall is N242454440.
Recall number 24V797000 · Recall details
Power train: driveline: driveshaft
- What is wrong
- General Motors LLC (GM) is recalling certain 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 and 2020 Chevrolet Silverado 2500 trucks. One of the driveshaft joints may not have been properly welded, causing the driveshaft to separate while the vehicle is moving.
- Risk
- If the driveshaft separates, there may be a loss of propulsion, increasing the risk of crash.
- Remedy
- GM will notify owners, and dealers will replace the driveshaft, free of charge. The recall is expected to begin December 2020. Owners may contact Chevrolet customer service at 1‑800‑222‑1020 or GMC customer service at 1‑888‑988‑7267. GM's number for this recall is N202314870.
Recall number 20V650000 · Recall details
What 2020 Chevrolet Silverado 2500 owners say
Most recent owner complaints, unedited.
The contact owns a 2020 Chevrolet Silverado 2500. The contact stated that the transmission shuddered and hesitated while driving 55 MPH or at higher speed. The vehicle was taken to the dealer; however, the dealer was no longer in business. While driving at various speeds, the lifters were squeaking. The vehicle was taken to a dealer and was diagnosed with lifters failure. The contact decided not to repair the vehicle. The manufacturer was informed of the failure. The failure mileage was approximately 170,000.
2 of the 4 Balance weights from Front Axle Propeller Shaft have become detached from their welds. Found on chassis during routine maintenance and visual inspection. Truck was just outside window of recall N202314870, Contacted GM Customer care to confirm no recall work was preformed and vehicle is outside of window of the referenced recall. Vehicle scheduled for evaluation/repair by GM Dealer 9/14/26 approx. 84000miles
The contact owns a 2020 Chevrolet Silverado 2500. The contact stated that while driving at an undisclosed speed, the transmission was slipping and shifting hard. The contact associated the failure with the federal safety agency Campaign Number: 26V083000 (Power Train); however, the VIN was not included. The dealer was notified of the failure, but the vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 120,000.
my 2020 Chevrolet Silverado has locked up a couple times on 4/2/26 i immediately drove to the robins chevy dealership, the service writer and i discussed the recall of the transmission, the next day i was sent a estimate of 6800.00 dollars to replace the valve body of the transmission, i asked why am i responsible for the replacement cost due to a known recall of the transmission valve body? i was instructed to call gm directly which i did and no action was taken, i was told to speak to the dealership manager. i need help with this matter.
Pulling out onto road, heard a bang, no forward or backward, unable to move vehicle, brought to repair shop, says output shaft is sheared off, 68000 miles on it, looked on line, apparently common defect, my son in laws friend just had his happen getting off ramp exit, 80000 miles, I’ve read where low as 20000 miles, as well as 59000, 33000 ridiculous crap made in USA…. Please help! No repair as of yet.
10L1000 transmission, began having problems with delays and harsh gear engagement. Flare shifting and shuddering. Finally starting having transmission overheating issues while towing. I had to make several unsafe stops with a trailer to wait for the transmission to cool down again before continuing to get it home. Saw trans temps up to 240°F on flat land with 40° outside temps. I could smell the hot transmission fluid inside the truck. When I went to check the fluid level of the transmission, the fluid was full but had a large amount of glitter like metallic flakes. The fluid was very dark brown in color and smelled terribly burnt. The last recall I took in to the dealer for was about the transmissions possibility of failing, locking up, along with the rear wheels at any speed. I have young children that ride in this truck, that in it self was unsettling and unsafe. But then to have issues with absolutely no warning light was concerning. Ive since ordered an aftermarket built transmission to avoid repeating the same issues with a factory GM replacement. My factory warranty had also ended a few months prior to having these problems with it. Leaving me to completely foot the bill for it to be replaced. I had to pull money from my retirement early to cover costs, in fact costing me much more than just the sticker price.
La transmicion viajaba aproximadamente a 70 millas cuando empeso a regresar los cambios rapidamente adta quedar parado en la carretera sin movimiento apague y volvi a encensenderla y trabajo una ves mas pero asiendo cambios bruscos Aora el dealer no quiso atender el recall disen que se tiene que remplazar la transmicion completa
The contact owns a 2020 Chevrolet Silverado 2500. The contact stated that while driving at an undisclosed speed, the rear wheels locked up momentarily. The check engine warning light was illuminated. The vehicle was previously taken to the local dealer to be repaired under the federal safety agency Campaign Number: 24V797000 (Power Train). The vehicle was repaired, but the failure recurred. The manufacturer was contacted, who confirmed that the recall repair was a one-time free repair, and no further assistance was provided. The failure mileage was approximately 188,000.
I just financing this car and dealer write on dmv price of $57,057 with 63,631 miles that the tell me that was a pre contract on 9/13/24 then they then the bring the truck on 9/15/2025 with 64156 miles at the price of 61,777 on the contract i dont know what to do
Questions about the 2020 Chevrolet Silverado 2500 transmission
Does the 2020 Chevrolet Silverado 2500 have transmission problems?
Owners have filed 33 complaints about the transmission of the 2020 Chevrolet Silverado 2500, 30% of all its complaints, more than any other problem.
At what mileage do 2020 Chevrolet Silverado 2500 transmission problems start?
The typical (median) mileage in owner complaints is 81,381 miles.
Was there a recall on the 2020 Chevrolet Silverado 2500 transmission?
Yes, 3 recalls: 26V083000, 24V797000, 20V650000. Check your VIN to see if your car still needs the free repair.
What year does the Chevrolet Silverado 2500 have bad transmission?
The Chevrolet Silverado 2500 model years with the most transmission complaints are 2024 (36 complaints), 2020 (33 complaints) and 2006 (32 complaints).
Other 2020 Chevrolet Silverado 2500 problems
Brakes 20Electrical 18Engine 14Fuel system 11Tires 10Steering 9Body 6Acceleration 4Driver assistance 2Lights 2Locks 2Airbags 1Seats 1Suspension 1Visibility 1Wheels 1
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