Chevrolet Silverado Complaints (2020)

902 consumer complaints on file.

#11720846February 27, 2026
POWER TRAIN, ENGINE
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720707February 26, 2026
ENGINE
The first thing was the whole engine shut itself off going 40mph and slowing down thankfully after I turned the truck off and back on it started right back up then I was driving 75 on the highway a couple days later and the whole truck started to shake as check engine lights came on and flash and the engine started to tick and groan. We pulled the spark plugs and cylinder 5 had clearly not been firing as it was designed to and then later found that the entirety of cylinder 5 had basically shredded itself from the inside out. Now my truck is waiting at the shop for a new engine. Both cases I had my kids in the car trying to get home.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720353February 25, 2026
ENGINE, FUEL/PROPULSION SYSTEM
My entire engine and the right bank lifters failed. Thankfully, these issues didn't fail until my truck was parked in my garage. No warning lamps did not trigger until these issues started. There was no warning. I have been having engine issues with this truck dating back to 2022. I will include all documents showing the issues I've had in the past 3 years. I was informed by the dealer that this is a known issue with this year and model of truck and even they were surprised that GM hasn't issued a recall. The vehicle has been inspected by the dealership only.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720127February 24, 2026
POWER TRAIN
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while driving approximately 45 MPH, the vehicle was shuddering with an abnormal sound coming from the rear of the vehicle. There was no warning light illuminated. The contact stated that the failure only occurred at speeds over 40 MPH. The vehicle was taken to an independent mechanic, who diagnosed the vehicle and determined that the transmission control valve had failed and needed to be replaced. The vehicle was not repaired. The contact researched online and associated the failure with 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 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720241February 24, 2026
ELECTRICAL SYSTEM, POWER TRAIN, UNKNOWN OR OTHER
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719749February 22, 2026
UNKNOWN OR OTHER, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, SERVICE BRAKES
Brakes lock up on vehicle while driving Must turn vehicle off and restart several times to disengage brakes. This has happened twice in the last 8 weeks, very concerning as we cannot use our travel trailer as we do not trust this not reoccurring. Chevy dealership says there is a recall on this issue but not on my truck?. But they say it is THAT problem
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719237February 19, 2026
POWER TRAIN
Rear wheel lock at speed up due to failed valve body and transmission
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719242February 19, 2026
STEERING
In several situations, I have lost partial or complete power steering ability. Once, while driving, I recieved a SERVICE ESC message and steering became quite difficult. Another time, power steering was completely gone, making steering impossible, although every other aspect of the vehicle operated normally. In both instances, there was no clear issue and after some time with the vehicle parked and off, it would return to normal. Possible loss of power steering unexpectedly is a serious concern at this point.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718740February 18, 2026
POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718543February 17, 2026
ENGINE
The contact owns a 2020 Chevrolet Silverado 2500. The contact stated that while driving approximately 45 MPH, the check engine warning light illuminated. The vehicle was taken to the residence. The vehicle was then taken to a dealer, and DTC: P133X (Cylinder X Glow Plug Failure) was retrieved. The contact was informed that the Glow Plug needed to be replaced and reprogrammed. The vehicle was repaired, but the failure reoccurred with a different Glow Plug five months later. The vehicle was taken to a dealer to be diagnosed, and it was determinedthat Glow Plug #3 had failed, and DTC: P0673, P0607, and P133A were retrieved. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 50,616.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718576February 17, 2026
UNKNOWN OR OTHER
THREE WEEKS I NOTICED THE HEADLINER ABOVE THE REAR WINDOW WAS WET. THE REAR WINDOW HAS SOME CRACKS ON THE TOP PLASTIC MOLDING THAT HOLDS THE WINDOW TO THE CAB OF THE TRUCK. THIS MOLDING IS IN BETWEEN THE HEADLINER AND THE REAR GLASS.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11718211February 16, 2026
POWER TRAIN
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717786February 13, 2026
ENGINE
Lifter failure in 2020 Silverado 5.3 engine causing loss of power while driving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717543February 12, 2026
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
On approximately January 24, 2026 my 2020 Chevrolet Silverado 2500HD equipped with the 6.6 Duramax Diesel displayed an error code (P20B9). This error code was found to be related to the diesel exhaust fluid system specifically relating to "Reductant Heater A Control Circuit/Open." On January 27, 2026, the vehicle was diagnosed at Chevrolet dealership and the following was reported "Diesel Emissions Fluid Tank Remove and Replace - P20B9 SET FOR REDUCTANT HEATER CIRCUIT...COMMANDED ON AND ZERO AMPS..CIRCUITFAILURE... DISCONNECT PUMP MODULE AND BURNED/OVERHEATED TERMINALS..PUMP MODULE AND HARNESS PART OF TANK ASSEMBLY... LABOR TIME ADDED TO PERFORM MALFUNCTION/TAMPER TEST TO CLEAR EMISSIONS MESSAGE...." I found the "burned/overheated terminals" comment to be alarming. I looked into this matter further and found a GM Service Bulletin (21-NA-006) from October 2022. This bulletin identified this issue which contained an image showing burned/overheated terminals. The identified cause within the bulletin states "This condition may be caused by a poor connection at the Emission Reduction Fluid Tank electrical connector." I believe this should upgraded to a safety recall due the the potential of this terminal connection catching fire which could be detrimental for the operator, passengers, property, and the public.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717625February 12, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2020 Chevrolet Silverado 2500. The contact stated that while driving at 50 MPH, the vehicle went into LIMP Mode. The check engine warning light illuminated, and the messages "Service Emission System”, “See Owner's Manual", and "65 MPH Max Speed" were displayed on the instrument panel. The vehicle was taken to the dealer, where it was diagnosed, and determined that the diesel exhaust fluid gas tank connector terminal had overheated, and the gas tank and the wiring harness needed to be replaced. The vehicle was not repaired due to the cost. The vehicle remained at the dealer. The contact associated the failure to the Global Warranty Management: N212342980. The manufacturer was not notified of the failure. The failure mileage was 173,794.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11717170February 11, 2026
ENGINE
Engine failed on interstate while pulling my RV. Almost had a bad wreck due to this happening. This is the known 6.2L engine failure issues. Had to have motor replaced by Chevrolet and had to pay out of my own pocket.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716867February 9, 2026
ENGINE
We own a 2020 Silverado with a 6.2L L87 engine… I am aware of open investigation # EA25007… Our vehicle had sudden engine failure.. no prior warning lamps before failure. (Our vehicle had no open recalls) Once vehicle engine failed left us with no power… had to coast vehicle to a stop. Will not restart. Verified proper oil level on dipstick so vehicle was not low on oil. Had to tow vehicle to shop .. retrieved code P0016 - crankshaft position Oil pan was removed and found bearing material as mentioned by GM issued recall 25V-274. Verified oil pickup tube was not clogged. All symptoms explained by 25V-274, we’ve experienced.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716155February 6, 2026
POWER TRAIN, ENGINE, ELECTRICAL SYSTEM
On September 27, 2025 while driving to my nieces soccer game my 2020 Silverado Traill Boss LT started losing power while driving. I was at a Red light when I felt the truck not properly responding to me pushing the gas pedal once it turned green. It slowly started accelerating and then with all the lights still illuminated on the dash, the truck completely stopped working with No response to the gas pedal. I had to let the truck coast forward while driving through an intersection. Thank God there was not that much traffic behind me and any cross traffic. I managed to pull the truck over stuck on the side of the road. My wife had to get a ride from a family member to reach the destination while I had to call a tow truck and have it towed home. Ironically, I believe the truck had just got out of Warranty, what a complete waste of thousands of dollars including the warranty that is always useless. I did not reach out to the dealership because I knew it was going to cost me an arm and a leg just for a diagnostic only for them not to find a problem. There was No Warning Light Flashing to notify me that my truck was taking a dump or any error code of any sort for a diagnostic to pinpoint the issue. I am surprised this has not turned into a Class Action Lawsuit (not yet anyways). My Father made me a Chevrolet person but with all the recent Engine/Powertrain problems with General Motors. I always believed the slogan "The longest lasting dependable trucks on the road". Tanks to YouTuber "@Donslife" for keeping the Public informed of all the latest updates with all these issues. This might be my last Chevrolet ever unless they could fix these issues and take some type of customer reimbursement/assurance/future or current incentives.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716298February 6, 2026
POWER TRAIN
The vehicle experienced a sudden loss of propulsion while driving at highway speed after normal operation. The transmission began slipping and then would no longer engage gears. The vehicle had to be pulled over and towed. This vehicle is subject to GM Recall N242454440 related to a known transmission control valve defect that can cause loss of propulsion. I was not notified of this recall by GM and discovered it independently. Once aware, I completed the recall software update. After the failure, the dealer documented pressure control fault codes (P0746 and P0798), burnt transmission fluid, and internal debris, and recommended full transmission replacement. I requested that GM evaluate whether this failure is related to the known defect addressed by the recall and Special Coverage N242454441. GM acknowledged my escalation request but did not schedule an inspection, did not contact the dealer, and closed the case without performing a causation review. The vehicle remains disabled, no technical inspection has occurred, and I am incurring rental costs. I am reporting this as a safety-related failure and recall handling concern.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715930February 5, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that immediately after leaving the dealer after the vehicle was purchased, the check engine warning light illuminated. Several days later, there was a loud knocking sound coming from the engine before the engine failed. The contact referenced NHTSA Campaign Number: 25V274000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The vehicle was taken to a dealer and an independent mechanic, but was not repaired. The vehicle had experienced catastrophic engine failure. The check engine warning light was displayed, and audible knocking was coming from the engine. The manufacturer was notified of the failure. The failure mileage was 153,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

← Back to Chevrolet Silverado