Body Problems of GMC Sierra 1500 - part 2

Tailgate opened on highway with cargo in bed. Also tailgate opens randomly when parked. This has happened many times, creating very dangerous and unexpected situations numerous contacts to the manufacturer have been unsuccessful in getting the hazard placed on recall. Numerous incidents. Keeps happening.

See all problems of the 2020 GMC Sierra 1500 🔎.

Front grill upper trim piece ripped off after strong wind gust while driving at highway speed. Grill flew up and hit windshield causing small glass chip. This event occurred on 2/13/25 and this item is now a known gm recall for this vehicle which was issued on 2/11/25.

See all problems of the 2022 GMC Sierra 1500 🔎.

The tailgate on my truck opened while I was driving and I was unaware until I got to my destination. I had a utility trailer attached at the time and my tailgate was damaged from the jack on the trailer. I thought maybe I didn't latch the tailgate but it has been several days since I opened it. The following day the tailgate dropped two more times in less than a mile. I see there is a service bulletin and recall on most gm models but my truck is not included. I made a service appointment at my local dealership for them to inspect. The service writer already stated that my truck has no open recalls. I feel this is a safety issue first and second my truck has body damage. I use my truck as a truck and usually have stuff in the bed. My truck is completely stock with no modifications except a GMC bed cover that I purchased at the dealership. I'm hoping for the best on Monday 2/17/25 when I take my truck in to be inspected.

See all problems of the 2023 GMC Sierra 1500 🔎.

1. During December 2024, noticed the wrap or called grill part at the back of the truck detached 2. On 5th February, got a warning :reduce acceleration with caution, when I pressed gas pedal, could not go faster than 35mph, the truck was shaking really hard. It has been in the dealership waiting for valve body until today 13th March, still no idea when it will be fixed.

See all problems of the 2024 GMC Sierra 1500 🔎.

The front chrome grill on my Sierra 1500 slt has begun to detach, and there is currently a recall for this specific component on my vehicle. I took my truck to GMC covert bee cave to get this recall and 1 other recall fixed, but gm does not have a remedy for grill. Not only does this pose a safety risk to myself, but I use my truck as a source of income by renting it out on turo, and turo has unlisted my truck from the app indefinitely or until this remedy is resolved. The paperwork I received from the dealership confirms gm has no remedy for the recall, and they sent me on my way without even offering a replacement vehicle. My truck is available for inspecting if you would like to see it. My safety and others safety is at risk if this recall does not receive a remedy or if gm does not give me a replacement vehicle in the meantime. No warning lights or any other systems can notify me if the grill is going to detach all the way, and I will not be able to have this source of income from turo without the ability to have my truck relisted.

While driving on the highway my front grill upper molding flew off and hit my hood and windshield. It ended up landing in the middle of the highway and other vehicles running it over.

The chrome front grill deflector is loose and feels like it is going to fly off at any moment. There have not been any accident or collision with the vehicle for this to be my fault. I know all the 2022 GMC sierras got recalled for this issue but dealership said my vehicle isn’t covered even though is the same issue.

Driving at highway speeds 60 mph. The upper grille (as GMC calls it) came off of the truck, hit my windshield and the car behind me also hit it. This is a known gm problem and they are not issuing a recall on this. We are lucky the car behind me didn't suffer any damage nor swerve to miss the flying piece of my vehicle. This is a huge safety concern that needs to be addressed. A quick google search will reveal many other people having this same issue. Some stating damage to their vehicle as a result.

I was driving on [xxx] in louisiana and the front grille fin break free, struck my windshield and then landed in the middle of the interstate. Thankfully no one struck it behind me. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was on the interstate going 60-70 mph and I noticed that my front upper trim of the grille was flapping and then just flew off my grille.

Tailgate opened/unlocked while parked during rain and light snow. The tonneau cover disguised that the tailgate was open (held it up just enough so it was not visable). The tailgate fell open while driving but went unnoticed. Several large and expensive items were lost out of the back of the truck which is used as a work truck for electrical services. This has happened twice on the roads. Now the tailgate is physically checked before driving to ensure it will not fall open. The incident was mentioned to the local gm dealer but we were told our model was not part of the recall. Our next call will be to gm directly to try to remedy the problem and hopefully recoup the items lost.

Entering a freeway and getting up to speed, the moulding between my grille and hood flew off. I was not able to recover it, therefore it has not been inspected by anyone. Luckily, this happened at night when there were very few drivers on the road, but had it happened during a busy time, it is likely that piece would have hit another vehicle(s). It has been reported as a problem on many forums. This happened without warning and there were no warnings after it occurred.

I was driving home from work on the highway, when the top part of the front grill broke off and flew up hitting the windshield. It caused me to abruptly swerve into the other lane of the highway. Luckily there was nobody in the other lane. The part could of also hit another car that was behind me. Going on line, I see this is quite common issue for 2022 GMC trucks and it occurs on the same conditions, driving down the highway. I suggest a recall to get this fixed.

While driving approximately 70mph down the freeway the upper grille assembly snapped off and went airborne, it struck the passenger side of my windshield putting 2 large scratches on my windshield. It then hit the roof of the vehicle and continued over my vehicle. Upon inspection the guard is held on by extremely thin clips and all clips sheared in almost identical spots. This creates a huge safety hazard for motorists behind the vehicle that could be struck by the flying piece.

While driving on the interstate at 75 mph, the top trim from my grill flew off unprovoked hitting my windshield and roof of the truck. Luckily there wasn't anyone behind us but the noise definitely spooked myself and the passenger not knowing what just hit the windshield. I took it into the dealer from who I purchased the truck and told the entire grill must be replaced for a whopping $1571. 26 not covered under warranty. The truck only has 24000 miles on it and cost near $80k. Thanks GMC!! scorned customer.

As I was traveling down the interstate at about 70 mph the front upper grille moulding flew off and almost hit the vehicle behind me. The clips that held this on the vehicle are very weak and this is happening to many of the same vehicles. Had I hit a car behind me there could have been significant damage, and luckily there was not a motorcyclist behind me. I did not hear any rattling or have any damage to the vehicle, this is simply a manufacturer's issue.

As I was driving on the highway the upper top moulding from the grill came off causing scratches to the hood. This is dangerous if it flies off into the windshield. This has been an issue for GMC.

The vehicle’s frame has severely rusted to the point of structural compromise. My certified mechanic determined on December 10, 2024, that the frame could not pass the state safety inspection due to advanced corrosion. Welding is now required to restore structural integrity. The truck has remained inoperable and sidelined since that date. The frame is available for inspection upon request, and I have photos, repair invoices, and a mechanic’s written evaluation. This same frame was previously reworked by GMC twice: may 7, 2018 – frame treated for premature rust. November 4, 2019 – frame recoated after prior treatment failed due to improper descaling. Despite these reworks under GMC direction, the issue has progressed to a dangerous level. The structural integrity of the frame is compromised. A severely rusted frame puts occupants and others on the road at risk in the event of a collision, towing, or even regular driving. A weakened frame could lead to loss of vehicle control, failure to protect occupants in a crash, or catastrophic breakage of suspension or driveline components while in motion. Yes. The problem has been confirmed by an independent certified mechanic, who inspected the frame and advised that the rust is beyond surface level and requires welding to repair. They refused to weld during winter due to safety concerns and advised that the truck could not be driven or pass inspection in its current state. The vehicle was previously serviced under GMC’s direction in 2018 and 2019 by a GMC dealer (weird GMC) to address early frame corrosion. However, the current failure has not yet been inspected by GMC directly since becoming undriveable in late 2024. I have reached out to GMC customer assistance and am awaiting a response. There were no dashboard warning lights or alerts for this issue. The only indications were visible signs of rust, which rapidly worsened after the 2019 rework. My mechanic noted signs of significant corrosion during routine servicing.

See all problems of the 2014 GMC Sierra 1500 🔎.

Driving on the highway, the upper grill molding on the leading edge of the hood broke off and came up and hit the windshield and top of the cab. Upon further research online, this seems to be a pretty common occurrence on sierras with the at4 trim package. I was told by the dealership that extended warranty does not cover this and I would have to order an entire new grille, over $1000.

While driving down the highway, then without any warning the front upper lip of truck grille flew off randomly. The broken piece shattered windshield and caused damage to body of vehicle. Reported to dealer, but they said I must have hit something to cause the damage. I did not hit anything. I was simply driving down the highway. This was a failure of the truck.

While driving home from work, on the highway. Travelling 68 mph. The upper moulding on the front grille blew off, struck my windshield and landed on the highway behind me. Vehicles behind me had to swerve and slow as a result. I waited for a safe time to pull over and turn around to go back and retrieve the piece. Once retrieved, I could see the plastic clips had broken. Some are still missing. Wry dangerous situation, luckily it was not dark outside, otherwise I imagine other vehicles behind me may not have seen it, could have caused a bad accident.

Upper trim piece of grill broke off while traveling down roar at 60mph. Part struck my windshield and flew over cab of vehicle and impacted the vehicle traveling behind me. Could've caused a much more serious accident!.

Upper trim on front grille fly off while driving. All clips were broken, very thin plastic. This piece of trim nearly hit the vehicle behind me while driving 45-50mph. I've noticed there are many owners experiencing the same issue. The trim piece is separate from the grille but gm will only sell the full grille replacement. The upper piece needs to be redesigned for safety purposes and replaced on all similar models.

My 2023 sierra has an issue with the tailgate opening at any given time while in park. The dealer denied such issue until I noted a gm recall on the tailgate switch becoming contaminated with water. My issue is the amount of items, such as tools, half full plastic gas cans, shovel, etc, that I have lost out the rear of my vehicle endangering other motorists. My tailgate has become damaged, mostly paint damage, however I am more concerned about the public's safety and other gm trucks with the same growing issue. It was not until my dead battery (in a 2023 vehicle) caused me to discover the tailgate issue was connected to the short in the release switch. I also have a tonneau cover so I cannot see the tailgate and the truck gives no indication of the tailgate being down. This problem began within a few months after purchase.

Paint bubbling on roof. When turning on key, the radio makes a loud buzzing sound. On 11/16/2024, when leaving a traffic light, the truck began surging and shuddering. Tachometer was revving up and down like the transmission was slipping with loss of power while trying to take off and accelerate. While attempting to return home, loud booming noise was coming in from under floorboard. I was unsure if I would make it home before the transmission totally failed. People were passing around me because I was unable to acceleration fast enough because of the shuddering and loss of power. No previous signs of any powertrain issues or failures before. It happened for the 1st time today, and my truck is no longer safe to drive. Gm has known about this transmission issue for years on several different models and has failed to broadly rectify the mechanical problem on all affected vehicles. Instead, gm has allowed the vehicle owners to continue to drive a vehicle with a known problem while it waited for a failure. This put me and my family at risk because I am driving around in a vehicle with a known transmission problem not knowing when it would fail or where I could be located when it failed. Gm needs to pay for all repairs on all vehicles with this transmission failure because gm has known about this problem for years before someone gets hurt or killed. Gm knew about the shuddering problem from the beginning, and they fixed the problem by tuning the transmission which then caused the total transmission failures over time which vehicles owners are not dealing with. Metal shavings are being located in the pan when inspected. Gm should be held responsible for the cost of these transmission repairs. I would have never purchased the GMC Sierra 1500 if I have known gm was installing defective transmissions in new vehicles. That is shady, reckless, and unsafe. Gm, pay to fix these problems.

See all problems of the 2016 GMC Sierra 1500 🔎.

Unknown. While I was driving down the interstate going 75mph the top part of my grill flew off cracking my wondshield. I pulled over and pick it up and all the plastic welded factory clips broke off. This is a seriously dangerous issue that should be recalled and covered by GMC.

Trim piece of chromed plastic on the front of the hood broke off and flew over the truck while traveling at 65mph. Fortunately no vehicles were close behind, but it could have damaged a following vehicle and/or caused them to swerve to avoid. This part is obviously a defective assembly. Photo available.

Roof rust at the windshield on a perfect condition vehicle. Paint is excellent on rest of vehicle. No damage or accidents and properly maintained. Premature rust is now visible at the roof of the of the vehicle. Soon could rot and allow water into cab of vehicle.

See all problems of the 2013 GMC Sierra 1500 🔎.

Top grill piece attached to hood blew off in the wind.

Cross member holding file tank rusted through causing the fule tank to not be supported and shock mounts no longer support the shocks to frame causing shocks to bounce around with possibility to puncher fule tank or lines also rear cross member that holders electrical components rusts off excessive rust on top of fule tank causing a inability to make repairs without replacing fule tank in entirety.

See all problems of the 2015 GMC Sierra 1500 🔎.

I was driving on the highway at approximately 65mph and the upper top moulding suddenly broke off, flew across my truck hitting my windshield, before landing in traffic. I had not had any previous damage to my truck prior to this incident. I am concerned this is a widespread issue that is creating an undue burden on the owners and potentially create unsafe conditions to nearby vehicles/pedestrians. I took my truck to the dealership as I have a warranty, but they refused to cover the cost of replacement.

I was driving down the highway at approximately 60 mph, and the upper front trim from above the grill flew off, struck, and cracked my windshield. Based on my research, this is a very common problem and a serious safety concern for drivers of 2022-2024 GMC sierras. It is also a safety issue to the general public for anyone traveling or walking near this vehicle when this condition occurs. There was also an article published on gmauthority website about this common issue as well as multiple reddit posts and gm forums.

As I was driving down the highway, the top piece of the grill flew off, went airborne, and almost struck the vehicle behind me. When I got home, I looked to see what caused this to happen. The piece was secured by flimsy plastic clips which had broken off. This is a complete manufacturing defect which is on GMC Sierra 1500s years 2022 to present and needs to be recalled. It's happening to a huge number of people based on the reports on facebook groups.

As I was driving down the road the front upper lip of my grill blew off and hit my windshield and then flew into car behind me. Looked online and this is a very common theme with GMC built in 2021 & 2022.

Front upper grill trim piece flew off truck causing a safety hazard for myself and others behind me. Flimsy tabs had broken and wind ripped the trim off.