Body problems of the 2023 GMC Sierra 1500 - part 1

I was driving down the highway and the front upper grille deflector flew off while at highway speeds. Due to the nature of being on a highly congested bridge, the grill piece flying off could've seriously injured not only myself, but other motorist around me. There is currently a gm recall (n242490120) out however, it only affects the 2022 model trucks. This makes no sense as this issue has been reported via threads and discussions on the internet for 2023 year models like mine numerous times. This is a serious issue and should be recalled just like the 2022 models. Not only am I now paying for a manufactuer defect out of pocket, but who's to say that the "new" part doesn't do the same thing and either I or another motorist is seriously injured or worse. . . Killed.

The front grill deflector sheared off of the truck when driving in the highway. The highway speed was 65 mph and the deflector flew out in to traffic. There was no warning or symptom prior to the problem or failure. This is a common ongoing issue with the same make/model of the previous year 2022 with an actual open recall unfortunately.

The attachment points for the upper chrome grille deflector have fractured, causing the trim piece to detach completely while driving and fly over my windshield which startled me and made me swerve dangerously. This is a known recall for the truck year before me and should clearly affect my truck too since the same description happens here.

The front grille/hood trim flew off driving down the highway. No, it is not available the cheap plastic shattered. My safety was put at risk b/c parts are flying off the truck that should never. More importantly other people's safety is put at risk b/c a long sharp plastic piece is flying off a large truck driving down the highway!! yes, glenn polk has seen the damage and can confirm. No, no one else has inspected it yet but you gladly can, it doesn't take a genius to see that the cheap pos plastic was terrible engineering by gm. There were no warnings or indications that the piece was even loose.

Driving down the interstate and the front trim bezel on the hood flew off. The plastic clips broke from underneath. Gm had a recall on this same issue in 2022 but not 2023 yet. Could of had an accident with the piece flying off at interstate speeds.

The plastic upper rail glass guide frame on the rear sliding window assembly of my 2023 GMC sierra developed structural micro-cracks during normal vehicle operation. This manufacturing defect is a known issue tracked internally by the manufacturer under technical service bulletin (TSB) #18-na-383. This structural failure allows severe water intrusion into the passenger cabin. The leaking water runs straight down the inside back wall of the cab, completely flooding and corroding sensitive, factory-installed electronic safety modules mounted directly beneath the leak path. This continuous water intrusion caused the catastrophic electrical failure and corrosion of the video processing control module located behind the rear seat. The sudden failure of this module completely disabled the rearview digital mirror camera and the 360-degree perimeter driver assistance cameras, creating immediate blind spots and an active driving safety hazard while operating the vehicle. The vehicle was inspected and repaired by an authorized dealership, confirming the rear window leak as the direct cause of the electronic destruction. The out-of-pocket cost to replace the water-damaged safety components was $2,747. 00. Because the manufacturer refused to cover the replacement of the defective rear glass assembly, the structural leak remains unresolved. This active water intrusion continues to flood the cabin, creating a health hazard via mold growth and guaranteeing that the newly replaced safety cameras will inevitably short-circuit and fail again.

It was the chrome grille deflector and is available for inspection. I was driving down a long road at roughly 50 mph when all of a sudden the grille deflector detaches from my bumper and hits my windshield causing me to swerve thinking I had hit something. I was almost in an accident. I believe there is a recall for this exact thing but only for 2022 models not 2023. No it has not been inspected I tried to call gm to get guidance and see if it could possibly be covered seeing as it is a manufacture error but was denied. One small piece that has been recalled on other vehicles but mine is causing me to almost pay $900 dollars. I have yet to replace the part.

As I was driving down the highway the hood front molding flew off and took a chunck of paint off my GMC 2023 at4, hitting a elderly ladies windshield we pulled over there was no damage to her car thankfully, she was very shakin and gave me an ear full. I have reached out to GMC even took it in and left it overnight and they say it is not under the recall and it will cost $1200. 00 to fix. We currently own 3 GMC's, this one is mine (a woman) and she is my baby. I do not think it is fair that my truck matches the exactly damage you see on the trucks on the recall list, a service man also told me that they replaced one of them that was recalled and shortly after it to broke and flew off. If there is anything someone can do help, I know I am not the only one this is happening too. Thank you j.

Driving on the highway and the top section of the grill (approx 4" x 50") broke loose and went over the cab of the truck. The piece didn't hit my truck or any other vehicle, but the driver behind me swerved to avoid it. All of the clips that hold the chrome piece to the vehicle are still attached to the body. I made contact with the local dealer's service dept. And was told my VIN was not in a recall for this issue. I contacted gm customer care and was told the recall hasn't been extended to my vehicle and that I would have to pay for the replacement. If gm extends the recall to the other known issue model years I could be reimbursed. There seems to be numerous other complaints of this issue that aren't covered by gm.

I was driving down the interstate and the hood valance blew off and hit my windshield.

I was driving at 65mph through a construction zone on my local freeway - through a construction zone. With cruise control on, my upper bezel portion of my grill detached. It slammed into my windshield and hit the semi behind me after bouncing off the road. Luckily, neither of us swerved drastically. However, with workers in the area, this could have been a catastrophic event. After contacting my local gm dealership, I was told "yeah, that just kind of happens from time to time". When relaying that information to the gm customer service team, they told me to ask for a courtesy credit from the dealership as I was out of warranty on bumper to bumper. There were no prior issues with this part on my truck that I was aware of leading up to this event. It additionally caused damage to my windshield and roof.

The plastic piece above the front grill detached and flew off the truck. I’m not sure the name of the part.

The grille deflector flew off while driving. The same exact problem the 2022 sierra had as described in n242490120.

I was driving down the road and my top grille molding flew off.

The top part of the front grille fell off while driving.

While driving under normal conditions, a front grille trim component detached from my vehicle without any impact or external cause. The piece became airborne and struck my windshield, creating an immediate safety hazard and risk of loss of control. There was no prior damage or warning. This represents a failure of a vehicle component under normal operation and indicates a defect in materials, design, or installation. Exterior parts should not detach and become projectiles at roadway speeds. The manufacturer has been notified but has declined responsibility. Given the safety risk, this may not be an isolated issue.

While driving on interstate 10 at 70 mph the upper section of the front grille broke off. After the part broke off it contacted my windshield before continuing to fly off behind him. Not only putting me in danger but also anyone traveling behind me. From online research the is a recall for this truck except the 2022 models after the same thing happening.

While driving on the interstate the top part of the grill flew off into following traffic.

I was driving down the road the front piece of the grill flew off the truck and hit my windshield, then flew into oncoming traffic.

Upper part to the front grille detached from bumper while driving, causing loud impact on windshield (cracking it) and scratching hood.

I was driving on the interstate and the upper grill broke off of the truck and hit my windshield.

Upper grill trim panel broke off while on highway and went flying over the truck while at highway speeds. Same issue as existing recall for the 2022 model.

While driving down the highway the top part of the front of the grill flew off bounced over top of my vehicle and landed on the ground in the highway where the car behind me then ran it over and it blew into the median. I notified my local GMC dealer who said there is no active recall. Filed a complaint with GMC as this is a known issue and has already been recalled on the 2022 model. They reviewed and denied my claim at this time. It is a known manufacturer issue and creates a highway hazard if they continue to blow off and possibly hit or injure athers.

The grille deflector suddenly detached from the truck and flew off into traffic. It narrowly missed the vehicle behind me and could have caused a serious accident or injury. There was no prior warning or impact that would explain the failure.

I was just driving and the top chrome part of the grill flew off the truck.

Upper grill molding trim/bezel flew off truck. Part was recovered and clips look to have broken off. Plastic clips look to be insufficient and will break over time. Active recall for 2022 model vehicles only , needs to be expanded to 2023 or possibly further out.

Molding between top of grill and hood came off while traveling on highway and struck windshield and broke it.

The top of front grille broke off at 70 mph, struck the windshield then the fixed antenna on top of the truck then into traffic behind me all doing 70+ mph across a one mile long 2 lane bridge with no place to avoid the debris. The failed part endangered myself, my family and anyone traveling behind us. No one has seen the remnants of the event/ issue but the part was approximately 2ft long and 8 inches wide. The truck has a top piece that sits between the hood and the top of the grille. The part is gone but one can see the broken clips and flimsy plastic. The previous year model of the truck had a recall opened earlier this year for the same problem but not my truck. Multiple forums online report the same event as mine occurring on multiple model years.

The upper part of the grill detached on my 2023 GMC Sierra 1500 while going 65mph on the higway. The part is about 4 inches wide by 6 ft long. People behind me in traffic were swerving and dodging to avoid hitting it. Gm knows about this problem (see safety recall #n242490120), but the scope of the affected vehicles is incorrect, so my truck is not included. There were no signs that the part was going to fail before hand.

Part of the grille of my 2023 GMC sierra at4x flew off driving 75 miles per hour on the highway, I believe it has to do with the fasteners of the upper grille bezel.

The grill deflector flew off the truck doing 80mph on hwy130 in austin, texas.

While driving down the highway at moderate speed (60mph), the deflector, top of the grill broke off the truck, hit the windshield and the top of the truck (causing paint damage) and flew into traffic behind us. The incident put my family's safety and other drivers safety, at risk. I took the truck to a dealership immediately afterwards and they indicated the 2023 version is not under warranty, although a recall exists for previous years for this exact issue. There were no warning lights or messages received prior to the incident.

Tailgate opened several times without being prompted. Once while driving, two times while in park.

The chrome grille deflector detached yesterday while on the interstate and landed in traffic behind me. Gm recall number n242490120 does not cover my vehicle, but the same thing is happening to newer models. Gm says they won't cover my vehicle under the recall. Can this recall be extended to newer models?.

The upper portion of the front grille is loose and about to fall off. I know GMC has a recall on some trucks for this issue, however mine is not listed on this recall although I have the exact issue as the recalled trucks. It’s just a matter of time before this comes off driving 70 mph on the highway and could strike a vehicle behind me causing an accident. I noticed this being loose back in June 2025.