Owner-reported complaints naming the body or structure system, filed with NHTSA
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Reports naming the vehicle structure, frame, body panels, doors, hood and trim. Every record below is an owner-reported complaint about the 2020 Chevrolet Silverado 1500 submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 23 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Shown in the owner’s own words, exactly as filed
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that while vehicle was parked, water was leaking inside the rear interior of the cab. The dealer was notified of the failure, and the vehicle was serviced but the failure persisted. The manufacturer was notified of the failure. The failure mileage was approximately 38,000.
Component/System That Failed: The rear sliding window assembly leaked water into the cabin due to a manufacturing defect in the urethane seal and third brake light area. The window has been replaced and no longer leaks, but the water caused lasting damage to the headliner with trapped moisture. Components are available for inspection. Safety/Health Risk: The leak saturated the headliner, creating a serious risk of mold growth. My pregnant wife and unborn baby could be exposed to mold spores. Water intrusion also risks slippery floors, fogging, and potential electrical issues. Dealer Confirmation: Folsom Chevrolet confirmed the leak, replaced the window, and recommended full headliner replacement due to staining and mold risk. This is covered in GM TSB 18-NA-383. Manufacturer Awareness: GM has known about this defect for years but denied full repair (Claim #9582-9999). Symptoms: No warning lights. Leak first noticed in September 2025 after rains began. Due to dry California summer, it went unnoticed earlier, even though the defect likely started while the vehicle was still within the 3-year warranty period (mileage was over 36k when noticed). Additional Info: This is a known workmanship defect unrelated to mileage. A coworker has had the same issue twice on his 2025 Silverado. I paid $492.79 for the window + $144.50 diagnostic. GM offered only $1,250 in points and refused better resolution for the $3,100 headliner repair.
Rear window is leaking onto the carpet beneath it creating mold and could allow water to enter the SRS module. Currently i have a tray blocking that water but without that the SRS system could be affected by the water entering the cabin through the rear window.
The Rear Window leaks when it rains on the truck. I brought it back to the GM Chevy dealer and they applied a sealant. it immediately leaked right after. the truck now smells musty and im assuming there is mold growth. it has been at the dealership for the past two weeks while they try to figure it out
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated while the vehicle was parked inside the garage, he noticed a crack on the frame and there was water running back into the interior of the cabin and the backrest of the seat. There were no warning lights illuminated. On a separate occasion, the contact experienced water entering the cabin while it was raining due to the frame cracks. The contact contacted the water doctors and provided a diagnosis of frame crack in multiple locations, allowing water to enter the cabin of the vehicle and underneath the spoiler. The local dealer was contacted; however, the vehicle was not repaired because it was not under recall. The manufacturer was made aware of the failure. The failure mileage was approximately 40,000.
Lifter failure in the motor ALso, leaking in back window
My 2020 Chevrolet Silverado rear window leaks causing mold on headliner and carpeting and if running electric defrost during rain it makes a sizzling noise afraid of electrical issues as well if not correct and the mold makes the interior environment unsafe for breathing
The back window is leaking water into the cab. Water enters the cab any time it rains or when washing the truck. This water is creating a damp environment by soaking into the back of the seat, the carpet, and the headliner, creating the potential for black mold. Immediately after purchasing the truck, the dealership had me bring it back in so they could fix it. Ever since the repair from the dealership, the window has continued to leak at the same rate that it did before the fix.
Rear sliding plastic window frame cracks and allows water to seep into the cab. Hardware and metal brackets have rusted, electrical components may be at risk of shorting out. Mold and mildew can be smelled on warm days, which poses a health risk. Complete window has been replaced twice and original and replacements have all been resealed as a "repair" but has failed on all attempts. Headliner has been replaced once and is currently stained again due to another leak. No updated GM part exists to remedy the known issues.
While driving hauling trailer, tailgate randomly flew down, could have been very very bad had someone been behind me when wheel barrow flew out of the back. It severely damaged my tailgate when it flew down, and then got wedged between top of trailor.
The tailgate opens up while vehicle is in drive. No warning lights come on, the only way I knew is that people driving beside us flagged us down. The pickup bed was full of our luggage… luckily, nothing fell out. This has happened at least 3-4 times. The last time, we were towing our travel trailer, the tailgate opened up while we were driving and got caught on our tongue jack and propane tanks…damaging the tailgate and propane tanks.
I purchased my vehicle from Southern Pines NC and at the time it had 12k miles on it. At about 40K I started having transmission problems. It would hard shift in 1st and 2nd gears. It also would not go into reverse. Hendrix Chevy had my vehicle multiple times attempting to fix things. Telling me it was not the transmission etc etc. My power train warranty expired at 60K. I have asked for my complete service records multiple times. I have paid out a lot of money due to it "not being the transmission". The last time it was there the manager Matt took it home and said the changed the transmission fluid which was very dirty. Almost trying to say I had done something to make it that way however in the service history they had it almost the entire month due to issues. I got it back and my brakes went out while driving. I was able to cost to a stop. I was at my limit. I called Matt and said come and get this vehicle. I want Chevy to take it back. They kept the vehicle for almost 2 weeks. Matt said he personally drove it home and it was fixed. I picked it up and I have not had any issues for about 8 months or. Now my power train warranty is expired and my vehicle is again doing the same things it was when I took it in at 40k. It now has 85k. It is hard shifting in 1st and 2nd. It is rolling when in drive. I also have had many body parts that have come off etc. I called Chevy today to again get my service records. I stil have not gotten them. I just want a reliable vehicle. I feel like I have not had a reliable vehicle from day one. I want them to take this vehicle back and I want a Toyota hat is comparable in cost of my truck in its new form. Can you help me?
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that moisture was leaking into the vehicle from the rear passenger’s side window. The vehicle was initially taken to a dealer where the window was resealed; however, the failure persisted. The vehicle was taken back to the dealer where it was discovered that there was crack in the rear passenger side window frame. The window frame was replaced but the failure persisted. The contact stated that mold might form inside the vehicle due to the failure. The manufacturer was notified of the failure. The vehicle was not repaired. The failure mileage was approximately 15,000.
I am concerned of the blind spot created by the size of the right and left support structures on either end of windshield. They also have a grab handle attached to them increasing the size. When at a stop and looking for cross traffic they create a blind spot of approaching vehicles. I believe this was why I thought no traffic was approaching when i entered roadway and then saw a vehicle approaching from the left. I immediately came to a stop and avoided an accident luckily.
Electrical acutated tailgate will not come down. The truck came with a soft bed cover that locks. If my child was to hide in the bed somehow it would pose an immediate risk to life and health as the tailgate will not come down and does not have any type of manual override. The interior controls do not work to lower the tailgate, the key fob controls do not work to lower the tailgate.
The frame of the truck is excessively rusty and the manufacture undercoating has flaked off. All components of the frame and underbody have significant rust for the age of the vehicle. This was just addressed with the dealership who stated there was no warranty to cover it. There has been no service done to the frame and all preventative maintenance and service checks have been done at the dealership on time. It was just recently noticed to be so rusty. This poses a problem with the safety of the frame of the vehicle which can lead to cracks, broken welds, holes, etc.
The contact owns a 2020 Chevrolet Silverado 1500. The contact stated that upon purchase of the vehicle, he noticed an orange-colored rust underneath the chassis of the vehicle. The salesman assured him that the rust would be cleaned off once the sale was finalized. Months later, the contact noticed the same orange colored rust had returned. Upon inspection of the vehicle, he discovered severe corrosion located in several spots on the subframe. The contact took the vehicle back to the dealer for the repair. The contact then received a call back from the dealer and was informed that no corrosion was found, the dealer linked the failure to structural rust. The contact disputed the diagnoses and the dealer agreed to have a further inspection performed on the vehicle. The manufacturer was not notified of the failure. The vehicle was not repaired and remained in the possession of the dealer. The failure mileage was approximately 65,000.
The passenger door is attached properly, when the truck reach 70 mph or higher and little cross wind, there is really loud noise like the brakes sticking. I was afraid the door might flew off while I'm driving and I have infant in the back. I took the truck in to the dealership where I purchased and the problem was never fixed. when I took the truck back the 2nd time, the dealership told me to take my truck to GM dealership. I took the truck to the GM dealership hour later my truck was ready, apparently this problem happened to another vehicle. Now the noise is worst and it's on both side when I'm driving 70mph or higher with cross wind. I took the truck back to the dealership and now I'm waiting on parts to arrive 2 weeks later no call back. It's been one year 6 months with less than 19000 miles, afraid the doors might pop off and still the problem is not fixed.
VEHICLE BOUGHT NEW FROM DEALER DEC 2020. I DECIDED TO REPLACE SOME LIGHTS SO, I LOWERED THE SPARE TIRE FOR BETTER ACCESS WHILE REPLACING A LIGHT BULB. I NOTICED EVERYWHERE THE SPARE TIRE AND THE FRAME CROSS MEMBERS COME INTO CONTACT THE PAINT HAS RUBBED AWAY AND RUST HAS BEGUN TO FORM. ALSO, THE SIDEWALL OF THE SPARE TIRE HAS CORRESPONDING SPOTS WHERE THE RUBBER HAS WORN AWAY. THIS LEADS ME TO HAVE CONCERNS AS TO THE SPARE TIRE'S AVAILABILITY IN THE EVENT OF A FLAT.
REAR PASSENGER PILLAR LEAKING AND CAUSING RUST, STAINING OF HEADLINER AND PILLAR COVERS. DOCUMENTED BY MANY OWNERS ON CHEVY FORUMS. LEAK MAY BE FROM ROOF SEAL OR REAR WINDOW.
FRAME PAINT PEELING OFF WITHIN 6 MONTHS. DRIVERS AND PASSENGER SIDE FRAME ABOVE REAR AXLES. MULTIPLE COMPLAINTS DOCUMENTED ON CHEVY FORUMS. PAINT FALLS OF WITH SIMPLE WASH EXPOSING BARE METAL FRAME WHICH WILL LEAD TO PREMATURE RUST AND CORROSION
TL* THE CONTACT OWNS A 2020 CHEVROLET SILVERADO 1500. THE CONTACT STATED WHILE DRIVING 60 MPH HAULING A LOAD, THE VEHICLE STARTED PULLING TO LEFT. THE CONTACT TURNED THE STEERING WHEEL SIDEWAYS TO STRAIGHTEN THE VEHICLE. THE VEHICLE SHIFTED SIDEWAYS WHENEVER THERE WAS A BUMP IN THE ROADWAY. THE CONTACT DROVE THE VEHICLE HOME AT A REDUCED SPEED. THE CONTACT STATED THAT THE FRONT WAS ALSO RUBBING AGAINST THE AXLE. THE VEHICLE WAS TAKEN TO FELDMAN CHEVROLET OF LIVONIA (32570 PLYMOUTH RD, LIVONIA, MI 48150, (734) 367-4664) AND DIAGNOSED WITH A BENT SUBFRAME. THE CONTACT WAS INFORMED THAT THE REPAIR WAS NOT COVERED UNDER WARRANTY OR A RECALL. THE CONTACT WAS INFORMED THAT THE CAMBER NIPPLES FRACTURED CAUSING THE SUBFRAME TO BEND. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE CONTACT WAS INFORMED THAT AN INTERNAL INVESTIGATION WOULD BE CONDUCTED AND HE WOULD BE GIVEN A CALLBACK. THE FAILURE MILEAGE WAS 9,800.
ON THE HOOD OF TRUCK IS A CHROME "6.2L" EMBLEM. ON SUNNY DAYS AND DRIVING WEST THE SUN REFLECTS VERY BRIGHTLY OFF OF THE EMBLEM AND INTO THE DRIVERS EYES. EVEN WITH SUNGLASSES THE REFLECTION IS VERY BRIGHT AND PENETRATING.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
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