88 problems related to electrical system have been reported for the 2021 Chevrolet Silverado 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Chevrolet Silverado 1500 based on all problems reported for the 2021 Silverado 1500.
I was driving down the highway when my tailgate open on its own. This has happened 4-5 times where items could have fallen from my truck bed and caused an accident. There is an active recall for this issue but according to my VIN my vehicle isn’t affected but it clearly is. Dealer has inspected and confirmed it’s the same issue as with other models.
My windshield wipers stop working on low and high and from time to time my vehicle will not go in reverse. When it does finally go in reverse it's a very hard jerk, also when I'm driving it gets a drag an acts like it wants to stop going. It happens frequently and it has been going on for months.
Unknown - the truck began jerking/braking on its own while driving last week. I took it to a local transmission shop where it has sat for the past week as they said the transmission control module/tcm needs to be replaced but the part needed is on back order. This issue sounds similar to the recent transmission recall (n242454440) though our VIN does not show there to be a recall on our exact vehicle. Our truck meets the specifications of the recall and having it inoperable has placed a hardship on my family. How can I get it fixed under this recall at a local gm dealer?.
Vehicle attempted to do an 'over the air' update to the infotainment system. This prompted an error message, stating the update failed and return to the dealership. Took vehicle to gm dealer, diagnostics were run, and dealer stated that an update was not available, and the module for the infotainment system was bad. Quoted me $1600 for replacement and install. Have read multiple reports with owners' having the same issue. Infotainment system attempts to do an update, and it fails. The owners are left paying out of pocket for something that was not their fault. This needs to be a recall. Not only are you paying a hefty amount for a repair that is not your fault, but the entire infotainment system doesn't not work (stereo, cooling/heating info, back up camera etc).
The inner tailgate on my 21 silverado is not functioning properly. The upper electronic button on the tailgate operates the inner tailgate and will release when opening the vehicle. It will continue to release by itself and can cause damage to the vehicle or to other vehicles while carrying a load.
There is a current recall out there for the tailgates releasing on 20-24 chevy silverado 2500 and 3500. I own a 1500 and am having the same issue. Water is getting into the rear electronic switch and releasing the tailgate unbeknownst to me. I have lost items that were in the bed on the pickup on the road while traveling. Can the recall include the 1500 models also?.
While leaving work I started the truck like normal and the dash lit up like a christmas tree. Saying service esc, service power steering,and service brake system. The esc light was on as well as the check engine light. There was no forewarning about this.
Push-button tailgate electrical failure. Tailgate opens on its own while driving and while truck is off. This is a known issue that has already been recalled by gm but my truck was not included in the recall, even though the problem and repair are exactly the same as the currently recalled vehicles. I had to pay a gm dealership to make the repair as the vehicle was unsafe to drive due to potential for flying debris from the bed while driving.
Lifter failure of the right bank in 2021 at 19,000 miles. At the time of failure engine was 2. 5 quarts low on oil. Ever since, this truck has been using oil excessively. I am currently involved with an oil consumption test. Of which over the last 5k miles I have had to have more oil added by the dealership.
The tailgate activates on its own, whether the truck is on or off, in motion or parked, the tailgate will activate and open at random times. There is no button that is pressed down, and no user error making this happen. When driving the vehicle, the tailgate will slam open and if you are pulling a trailer, the tailgate will slam into the trailer hitch and cause damage. Also, contents falling out of a truck bed is also a serious concern for other drivers. The truck was read for codes, and the code u0140 came up for the body control module that is malfunctioning. The truck has not been inspected by the manufacturer as of yet, but if need be, it can be arranged. The first time this error was noticed was in August 2024, and has been happening on & off since then. There were no dashboard lights on showing an issue was present when it first started and even now there are still no warning lights. Please consider issuing a recall, this is a major safety issue for other drivers.
Multiple times at varying speeds my 2021 silverado has produced engine misfire codes. I have never been able to get to it quick enough to see what cylinders are misfiring so it always gives me a general p0300 code. The following first two times it was confirmed by widrick truck and diesel in carthage, NY. The last time it happened, the code disappeared before I would take it to the chevy dealership. Widrick said they can’t fix the problem because they don’t know what it is, and Chevrolet denies there is a problem at all. The truck still has less than 50k miles on it.
Electric tailgate opener button switch on tailgate failed and allowed tailgate to open while traveling. Lost a tote containing tools onto the roadway when accelerating from an intersection. Luckily it was a rural road with no traffic and no one hit tool tote in the roadway. This seems to be a serious safety hazard especially if a motorcycle would of hit lost cargo in the roadway.
My check engine light came on. When taking it to the dealership, they say it's the catalytic converter. The converter is not an electronic part, so we replaced the O2 sensors and the check engine light came back on. I've taken this truck to several people who repairs cars, and the vehicle is only 3 years old , should not need to be replaced. A converter should last 10-15 years. In doing some research, I found the the 2019 recalled for the ecm module. Causing the same issue as the faulty reading on a catalytic converter. I am now out of warranty due to being 2,000 miles over the limit.
When you drive the truck for at least an hour then you turn it off the entire front like vibrates or shakes . It almost feels like something is still turning in the transmission but everything is turned off. This particular truck has already had the engine replaced at 14,000 miles bc it was faulty. It also has issues with tires. The radio and lights also all go off for brief time and then it comes back on. At times the drives side seat belt will lock and it pins you to the seat where you cannot move and you have to remove the seat belt. It is becoming more of an issue. I believe the transmission to be going out. Today, I wasn’t sure if the vibration in the truck was going to stop. So I stopped driving the truck and went and got another vehicle to drive.
Rear tail gate opens when parked and while driving. It also opens when key has been removed.
Back in March 2024 the tailgate opened on its own only a few times. Now April 2024 it opened on its own several times without a button being pushed. After it opened it made several clocks like the tailgate is trying to lower. Now the tailgate button does not work and can only open it with the key fob.
The key fobs for keyless start/lock/unlock stopped working and batteries replaced still didn’t work. Brought to dealer to be fixed. They replaced a sensor thinking it would be the fix- did not work. They found a corroded wire and replaced it. Asked them what happened and how it corroded. They said it was nothing we did wrong it just corroded. Cost $1000+ for fix for an issue that seemed to “just happen”.
On Sunday, January 4th, the tailgate of the truck began unlatching and opening on its own. It has done this repeatedly since that date. Only unlatches when the vehicle is in park and unlocked. The electronic latch will continue to cycle (click) after the tailgate has initially opened. Exterior taillights and side markers flash as they should with each cycle. This issue is identical to the warranty recall issued recently for the 2020 through 2024 Chevrolet and GMC 2500 & 3500 trucks.
On the evening of Dec 19th, our 2021 chevy Silverado 1500 duramax with 19k miles on it caught fire, burned, and was declared a total loss. We were on our way to go pick up our travel trailer as were we leaving for a trip on xmas with our 2 dogs and my brother-in-law. Smoke started billowing out from under the hood and within minutes the front end was engulfed in flames. I have pics/videos. We’re ok but that was a scary situation that could have had a different outcome. We could have been on the highway towing our trailer with our 2 dogs and bro-in-law and who knows how long it would have taken the fire department to arrive on scene on the highway. There were no warning lights etc. To notify us. The truck gets driven, taken care of and I had just driven it the day before. We’re not aware or have seen any recalls. All info is on our chevy app. We filed a claim with our insurance, and it has been paid off now, but in reality, "our fault" in insurers eyes. No cause was determined. That being the case, gm has closed claim and say not liable for personal property lost in fire, as insurance didn't contact gm with any mfg defects and insurance has already paid off the truck. We are repeat chevy customers. This was our 4th leased silverado and we also have a traverse. The lease on the burned-up truck was coming due may 2024. We way overpaid on the milage. We're not filing a homeowners claim for lost personal property as insurance has paid off the truck and we don't want to be dropped. My question is wouldn't this be under warranty? should the truck not be replaced? we didn't cause the fire. Much more damage could have occurred. People and pets could have possibly been injured or worse. If we were towing our travel trailer, that would be another big loss. The truck is no longer "available". Insurance told me today it's being sold for parts, which honestly kind of scares me. I wouldn't want a truck part that was in a fire, damaged or not. Videos not attached.
1. Trucks start/stop delays. When in traffic or crossing over lanes the truck fails to turn back on/start. When the truck does turn back on, the truck jumped forward almost sending me and my family into on coming traffic. 2. When trying to start the truck the starter will turn over constantly not turning on the truck (motor is turning over). The starter will time out after about 20+ seconds. The starter does this when auto start/stop is activated, so we get stuck in traffic almost causing accidents.
In January 2024, the electric tail gate started to spontaneously open and close. This occurred while driving and in park. I took it to outten Chevrolet in allentown, PA, where they stated it was a problem with a switch. They replaced it. Within a month I was told there was a problem with this model, and a recall was being planned. Over several months , I kept inquiring about the status of the recall, hoping to be reimbursed. I finally contacted Chevrolet directly. I was told that there was a recall, but my vehicles VIN number was not included. I feel that I should be reimbursed.
Hello: I have this issue with my vehicle, and have read several people on Chevrolet silverado message boards noting that their windshield wipers do not function properly when turned on. My wipers only work when I push the button to wash the windshield and they do not work in any other setting. I believe this is something that should be looked into and it seems like this is a good place to start.
Truck lost power and shut down without warning while driving in traffic. Happened twice on the way home from church with my family. First time truck shut off as we were turning across a busy intersection. Coasted off on to shoulder of highway. After several attempts truck restarted. It shut off again before reaching home. Has to call a tow truck. Has truck towed to local chev dealer on new years eve. Dealer kept truck three days. Could not find problem. I picked up truck, drove home, truck shut off just before I reached my house. Coasted into driveway. Called dealer. Said bring it back. Waited two hours. Truck started so I drove back to dealership, approximately 15 miles. Truck shut off again without warning on highway in front of dealership. I sounded horn and flashed lights as I coasted across oncoming traffic into dealership parking lot. This was on Wednesday Jan 3rd. Friday afternoon dealer called and said that hey have not been able to isolate problem. Said they know they are losing communication between modules but don’t know where. The “fix” they claim is to take the cab off the truck and replace entire wiring harness! cost is $6300. Truck has 48,000 miles on it. All highway and road miles. Can’t afford $6300 to repair a 2. 5 year old truck. I am fortunate that neither me or my family were involved in a crash due to truck shutting off unexpectedly. This is a very dangerous issue.
The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that while driving approximately 60 mph a burning rubber odor and a smoke haze was present inside the cabin of the vehicle. After stopping to investigate under the hood flames were present at the passenger side fire wall of the engine compartment. Moments later the cabin of the vehicle was in flames which quickly spread and the entire vehicle became engulfed in flames. The fire department was called to the scene to extinguished the flames. The vehicle was destroyed and towed away. A police report and fire report was taken. The cause failure was not determined. The manufacturer was not notified of the failure. The local dealer was contacted. The failure mileage was 90,000.
Push start button malfunctioned. The vehicle would not turn off last night and took about 30 minutes to get vehicle to turn off. Next day, had the same issue where vehicle would not start and left me stranded. After calling for a tow truck, I was able to start the vehicle. When researching the problem online, I saw several other complaints of the same issue where the buttons malfunctioned and could either not start their vehicle or turn the vehicle off.
On three separate instances (two after paying $3,000 to "fix" it) my 2021 trailboss is flashing warnings park assist off, steering assist is reduced drive with care, service 4wd, service trailor brake system. . . All while driving down the rode and losing all gauges/flatlining and no fuel warning engaging (had a 1/2 tank). The Chevrolet dealer claims it's not producing a code (thankfully I recorded the evidence). . . Truck has just over 40k miles and has been driven with care. **pictures are all while driving down the road** serious electrical and safety issue and it needs to be recalled and addressed!.
Engine suddenly began to run rough and slowed substantially while driving. If this occurred at highway speed, it could have presented a safety risk. Multiple check engine lights and error messages appeared at the time of the event - "service emissions system" and "65mph max speed" dealer inspected vehicle and found a shorted wiring harness and fuel injector. The faulty parts were replaced.
Tailgate opens on its own or doesn’t want to open with push button.
Unknown.
While pulling out into traffic the vehicle will momentarily lose all electrical power and the engine shuts off causing loss of brakes and steering.
I bought this vehicle brand new off the lot in 2021. Truck hasn’t had any problems until this year. Every few weeks it will randomly just not want to start, I’ll usually check the battery and the battery will be completely drained. I can’t figure out what is causing the battery to drain like this, but something needs to be done as I have literally been stranded places due to my truck just deciding not to start randomly. Today I’m having this exact problem, my trucked was parked overnight in my garage and I went to go to work this morning and once again the truck won’t start and battery is drained. All my doors are shut and no interior lights are left on.
The 2021 lt trail boss with the 5. 3l engine started a really rough idle, engine knocking, random misfiring, had service emergency brake, service esc messages on the display, check engine light and several other dash warning lights. The dealer diagnosed the truck with lifter fail apart (failure), intake valve push rod bent, and pcm failure. Odometer reading 19,368 miles.
Window switch failed and I was unable to roll down the window. Dealer confirmed and performed repairs. Problem occurred on a dry day with no previous issues and the dealer stated it was manufacturing defect with the switch.
Body control modules sas modules no communication service esc light and traction control lights coming on vehicle looses all steers ng when lights come on at any speeds it says service esc power steering loss drive with caution have had it into multiple shops and no diagnostic scanners can get into the 3 systems there 6050 miles on vehicle we haven’t gotten in a wreck yet but that is totally not out of the question it will happen and when it does its going to be devistating.
Vehicle: 2021 Chevrolet Silverado 1500, 3. 0l lm2 turbo diesel mileage at most recent failure at 106k miles complaint narrative this vehicle has experienced repeated, serious defects affecting engine, transmission, emissions system, and safety recall performance. Despite numerous repair attempts over three years, the problems remain unresolved and the vehicle is currently undriveable and held by the dealership (since August 17, 2025). Key safety concerns: transmission failure: transmission catastrophically failed at 78,942 miles due to excessive metal contamination, requiring full replacement. Transmission issues have persisted even after replacement. Recall n24254440 (rear wheel lock-up): dealer attempted recall repairs multiple times in 2025 but failed due to programming errors. Recall remains incomplete and unresolved. Hard starting / reduced power: vehicle intermittently fails to start or loses propulsion, creating risk of stalling in intersections or traffic. Engine/emissions failures: multiple check engine events with nox sensors, exhaust differential pressure sensors, and coolant flow valve failures. Current status: vehicle has been in dealer custody since Aug 17, 2025, with no completion date. Dealer reports unresolved oil leak, check valve/box sensor replacement pending, and open recall not fixed. The cumulative history shows systemic defects across powertrain and emissions systems, ongoing safety recall failures, and lack of durable repairs. I am providing all invoices, videos, and documentation upon request. --- chronological service timeline invoice #mileage (in/out)datereported issue / repair attempt 33432337,290 ? 37,62607/11/22 – 07/30/22check engine light. Multiple fault codes. Dealer performed diagnostics, suspected exhaust leak, removed components for inspection. 33433837,450 ? 37,50807/.