Equipment Problems of GMC Sierra 1500 - part 1

Code p1098 came up today 80k on the truck. Coolant control valve failure. Second time this has failed, first at 45k. Speed reduction activated.

See all problems of the 2023 GMC Sierra 1500 🔎.

The truck has shut off driving 5 times total and 3 different days, I was going down the interstate, and hwy. Speeds were ranging from 45 to 70, this is the 3rd time in the shop. At two different dealers.

See all problems of the 2024 GMC Sierra 1500 🔎.

As I was driving down the road, I heard a loud explosion. I looked around, didn't see anything that could've hit the truck. I thought it was possibly a gunshot that went off. After driving for another 3 or 4 minutes, I heard glass going everywhere. It was the moonroof that exploded. Thankfully, the sunroof cover was in the closed position. Otherwise, glass would've been all over the interior of the vehicle. I called the dealership to report the incident and to see if this was something that could be covered under warranty. I'm still waiting for a call back. I then called my insurance company to report what happened. I was told to seek a repair shop and collect all receipts for the claim. No warning lights have appeared in the vehicle yet. Since we were driving home from a vacation, we stopped and got a roll of vinyl sticker to cover the outside from rain.

I was driving today with product resting on the tailgate and the tailgate dropped while turning a corner, spilling product on the street. It was a residential street, thankfully, but it has happened on the highway. Previously, I had bikes resting on the tailgate and the same thing happen. Tailgate will randomly drop while driving, especially with a little weight resting on it. I close it completely, but doesn't seem to matter. It has become a concern and safety issue.

See all problems of the 2022 GMC Sierra 1500 🔎.

The engine coolant control valve on my 2021 GMC sierra 3. 0l duramax diesel failed. This specific component failure triggers an active vehicle 'no-restart' safety event during automatic engine stop/start operations (per gm service bulletin #24-na-070). This condition can suddenly prevent the vehicle from restarting when stopped at intersections or in active traffic, creating an immediate highway safety hazard and leaving the vehicle stranded. Additionally, the vehicle's radiator cooling fans run continuously at 100% maximum capacity as a system fail-safe, creating severe electrical drain. General motors has issued a special coverage adjustment (#n252508341) acknowledging the high failure rate of this part, but it is capped at 150,000 miles. Because this defect causes unexpected stalling/no-start safety risks in live traffic past this arbitrary mileage limit, a formal safety recall is required.

See all problems of the 2021 GMC Sierra 1500 🔎.

Upper grille flew off on interstate. Hit windshield and landed in median. I have the black grill not covered in the recall.

The front grille trim moulding failed and flew off on the highway. Also, the forward collision light on vehicle from the front camera not working and needing to be replaced.

I purchased a 2024 GMC Sierra 1500 denali VIN # [xxx] on xxx with approximately 18,599 miles on the vehicle. The incidents are identified below in order. 1) xxx, vehicle engine failure while driving at high speeds, with my daughter as a witness. I reported the incident to elder Ford on xxx, and my sales associate told me to take it to GMC for factory warranty. Xxx took the vehicle to central Buick GMC they performed a test that found no codes and replaced the fuel pump module from past experiences. They let me take the vehicle home. 2) xxx vehicle engine failure while driving at high speeds, had to get it towed to the dealer for repair. Again, they found no codes. Had it for 5 days. Made me take it home. 3) picked it up on xxx , was driving home and the same thing happened while going 70+ mph on the interstate. Stalled again. Drove it back to the dealer and dropped it off again, same day on the xxx. 4) again, they found no codes and made me pick it up on xxx I was driving home on xxx and the same thing happened- lost complete power while going down the road at 40+ mph. I had to get it towed the same day back to the dealer where it currently is at. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Learned that GMC engines may have an issue. We haven't had one as yet.

The upper chrome grille molding fractured at the clips and completely detached at highway speeds, creating a dangerous flying projectile. This is an identical material failure to NHTSA campaign 25v-060. The defective part or assembly process clearly extends into the 2023 model year.

The molding cover for the hood fell off by hwy speed, and recently we I went to oil change after I get the car the technician said the bolt for tie the oil thing is not correct and it’s not for this car and this was the reason for leaking and need to replace with right one.

Engine started knocking at 18k miles and took to dealer and they found metal in the filter and installed a new engine and also replaced the midplate gasket on the valvebody due to a harsh downshift without codes in the system this engine is going on 2k miles and it seems to be fine now but the problem with 6. 2 was only supposed to be on the 21-24 models and mine is a 25 model and already had a replaced and nothing from gm was said to extend the warranty on this model and powertrain.

See all problems of the 2025 GMC Sierra 1500 🔎.

Hood molding- while driving down highway 45 doing about 75 miles per hour the hood molding detached on the driver side and started beating against the hood. I was unable to reach and exit before the entire mood flew off and over car. Fortunately, there were no cars right behind me to cause and accident, except an 18-wheeler about 2 cars back and he ran over the molding. I contacted the dealership and GMC, but they said no recall on this issue. There were a recall 25v-060 for the 2022 (production dates Nov 09, 2021 - Sep 29, 2022). My vehicle production date is 08/19/2022 and they could have been using the same material. I feel this the same safety issue: if a front grille deflector detaches unexpectedly while driving, there is increased risk of a crash. The photo was taken when I got to the first exit to see what happen. You can see the clasps just broke off.

The grill deflector flew off while driving on the highway. I was driving roughly 55 mph. It is available now, but will be getting repaired in the near future. My concern is that it appears that this was an issue with the 2022 models and it’s still an issue on the 2023. The safety issue is if there was a vehicle or motorcycle behind me that it could have harmed whoever could have been driving behind me, caused and accident, or damaged their vehicle or mine in the process. The service advisor (j. R. ) told me that “sometimes the wind gets underneath the bezel and makes it snap”. No it has not been inspected by any of this mentioned. No warning signs prior to the incident.

Upper front grill trim piece was repaired under recall. After being fixed I was driving and it broke off flying up in the air and behind the truck. It did not hit another vehicle. Adaptive cruise control stopped working. Lane assist stopped working. Brake pad wear sensor error message stating it doesn't work. Vehicle has 19,000 miles.

Numero DE VIN faltante.

Subject: event of engine failure • while driving on a level paved road at 15 miles per hour in a busy area my 2019 GMC sierra denali pickup truck stalled in the middle of a busy street. • truck stalled in a heavy traffic area at an intersection putting myself and passengers in a dangerous area and situation. This obstructed the normal flow of traffic causing a danger to pedestrians and normal vehicle traffic pattern. Each had to go around my disabled truck into oncoming traffic putting them and normal traffic flow at risk. •upon securing a towing service the truck was transported to the nearest gm dealership. This happened on a Friday afternoon and the truck got to the dealership after hours. I returned to the dealership the next morning and was told that they may not be able to check the truck until probably Tuesday. On Monday afternoon I called and they hadn't been able to get to it. I received a call the next day and was informed that the technician at the dealership had put a breaker bar to the crankcase and the engine would not move and therefore the engine is seized. • there were no warning lights that came on prior to the truck stalling in the street. There was no noise prior or any other symptom to give any indication that the truck was not operating in a normal fashion.

See all problems of the 2019 GMC Sierra 1500 🔎.

I purchased this new 2026 GMC Sierra 1500 on 07/16/2026. Beginning shortly after delivery, the vehicle began intermittently losing all audio, including the audible turn-signal indication. The condition now occurs approximately once every 3–4 vehicle starts/uses. When the failure occurs, there is no audio from the infotainment system, radio, apple carplay, bluetooth, or speakers, and there is no audible turn-signal sound. Because the failure also eliminates audible driver feedback from the turn signals, I am concerned this is not simply an entertainment-system issue. The vehicle is available for inspection upon request. The vehicle was presented to ed morse sawgrass auto mall, an authorized GMC dealer, after the condition occurred again on approximately 08/20/2026. The dealer advised me that the vehicle already has the applicable software programming and that gm is aware of the condition. The service manager advised me in writing that gm currently instructs the dealer to recover/reset the radio and not replace the radio or amplifier because gm is working on a permanent correction. Restarting the infotainment system, safe mode, disabling quick startup, and allowing the vehicle to completely power down have not permanently corrected the condition. A full shutdown may temporarily restore the audio, but the failure returns. There are no warning lamps or messages before the failure. The audio simply does not function when the vehicle is started. The vehicle currently has approximately 976 miles. There has been no crash, fire, injury, or fatality. I have also formally reported the condition to GMC customer assistance. GMC case #108458085.

Top grill/hood trim piece - it is separate from the main grill. It detached and flew off at interstate speed. Thank god it missed several cars behind me. The passenger side corner came loose and before I could safely make my way off the interstate the piece ripped all the way across and flew over the top of the truck. May have gone 30 feet in the air prior to landing on the asphalt between the two lanes.

TSB 19-na-121. My truck is experiencing the exact issues detailed in the listed TSB. Randomly and quite often my truck feels like I am running over speed bumps. This just started about 3 days ago. The truck has been maintained. Oil is changed on time and there was a 100,000 mile service and I just had a 150,000 service done. Currently there are roughly $148,000 miles on the vehicle. Is there a way to have gm cover the costs of the repairs even though my VIN# was not listed. Also I am experiencing sudden power loss which is also mentioned in other bulletins. Basically it feels like the engine hesitates to accelerate.

The upper part of the grill was rattling while I was on a 270 mile road trip. I stopped, inspected it, and found multiple mounting points cracked. I did not feel it was safe to continue driving with it being so loose so I installed four zip ties to continue my trip back home. Safety recall n242490120 had already been completed which means this is the second time the plastic clips on the grill have failed.

The upper hood trim that sits above the grill, flew off on the interstate at approx 80 mph. Upon research this is a common problem for this make and model in years of 22-24. Gm has a service bulletin for this issue as well as the NHTSA. For this particular failure. There was no warning and when I contacted gm they were unwilling to assist as "service bulletins" are not recalls and the vehicle is out of warranty. There was no warning, no indicator, it just blew off and I had no idea until I got home and the piece was missing. I was unable to locate the part on the interstate, however I was able to keep all of the pieces attached to the vehicle for evidence and support. I am beside myself anyone thought this was acceptable to sustain the force of air flow!.

Truck shut off and would not turn back on. Negative battery cable so hot it burned skin off. Would not start, tried to start clicking sound, radio blipped for a moment.

See all problems of the 2014 GMC Sierra 1500 🔎.

I bought the truck with 2 miles , shut off on me within 1,300 miles wouldn’t turn on , supposedly it was a bad fuse that was burned out , second time it shut off on me again , all my sensors were going off and on and truck wouldn’t turn back on , they told me they couldn’t figure out the problem evaczue they had disconnected the battery and it erased all the codes 3rd time , they changed my oil and they forgot to torque the screw back correctly and all the oil spilled and cost my engine to lock up and mess up , they replaced the motor with a new one 4th time , supposedly it needs a replacement for a catalytic converter which is being replaced now as we speak or sometime this week.

There is a water leak in the rear passenger compartment of my vehicle. Unsure where water is coming from. Continued leaking poses a risk to my safety as I may be exposed to black mold as well as anyone else who is riding in my vehicle. The problem hasn’t been addressed by the dealer yet but this is a known issue. At this point I have spoken with a representative from the service department at the dealership but cannot get an appointment for several weeks. I was also advised that the problem would need to be diagnosed before being addressed at my cost due to being outside of the warranty period. There were no warning lights or any other signs that this is occurring and was only discovered because I was putting something in the back seat on 6/26/26.

This vehicles top portion of grill trim is starting to come loose, as this is a safety concern while on the highway, I had another vehicle that the trim flew off completely, (same year and model) while I was on the highway. This could hit another vehicle if this happens, or god forbid a person who happens to be on a sidewalk. I looked into this and found that there is a recall for the same issue on 2022 models that has not been extended to the 2024 model (recall n242490120). This recall should be extended to the 2024 models as this is a huge safety concern.

The problem is in the power-locking manual tailgate’s exterior release switch assembly. Water intrusion into the switch can cause a short circuit, leading the tailgate to unlatch while the truck is in park. Once moving, momentum and air pressure can cause the tailgate to open further, potentially dumping cargo onto the road and creating a hazard.

I noticed a "ticking" noise a few years ago, it wasn't that bad and while taking my truck to the dealer for an oil change I ask about it and the representative told me that in this models that was normal. Since it wasn't that bad and the truck didn't show any problems at that time, I just decide to let it be. This weekend I took my family out of state for a fun trip, and while going in the highway around 55-65 miles per hour, the truck suddenly lose power, it felt like it the truck "sits" the cars behind me had to Dodge me and I lost control of the truck and had to steer to the right getting out of the highway and almost go into a ditch, thankfully nothing scaleted to a big and disastrous accident. The engine light started to flash. And suddenly stopped, I turn off the truck checked back for my family and after a few minutes, I started the truck again, the truck started right away and but I noticed the "ticking" got a little louder, talking to my neighbor about this he told me he had the same issue and hes motor went bad and they said it was a bad afm system causing this, I started searching on line for it and see there been the same issues with the afm with other drivers, and seen that the have the same issues im confident that it is an afm problem. Truck is been running and is my daily work car and I notice is loosing power, I contacted the dealer but haven't had any answer yet. I cant take it to a mechanic shop because they would charge me in between 2,500 to 5k to fixed, money that I dont have, while in the call with one shop he told me about this place to put a claim and notify about how dangerous this can be if in a highway.

See all problems of the 2016 GMC Sierra 1500 🔎.

Vehicle will not consistently shut off. Shift to park error received upon trying to shut vehicle off. Concerns on if the vehicle is actually in park and if it is safe to exit vehicle. Concern that vehicle is not in park and electrical units aren’t being properly shut down (I. E. Radio).

Either while stopping while driving or parking (forward or reverse) the engine rpms go up thus wanting to move the vehicle in that direction causing the breaks needing to be applied harder. When you shift into neutral the rpms go way up (3000). This has happened on this vehicle 3-4 times of which I have video of the latest occurrence. When put into r or d the rpms are still over 1000. This also happened on the courtesy vehicle same make and model) I was given but on this one the rpms went up to 5000 of which I also have a video. The dealership has not been able to duplicate the issue as of yet. My fear is that the vehicle will hit someone or something if the break isn't pressed to the floor. It happens very randomly. The dealer currently has my vehicle trying to figure it out. They say gm says there's nothing they can do. No warning lights or messages appeared.

When I put the vehicle in park, the dash warning says it is not in park or shift to park. The components continue to work. I have taken it to the dealership and according to the service manger, this is a very common occurrence in these trucks. This seems to me that it would be a very serious safety issue if one assumes their vehicle is in park and it is actually not. The shift to park warning is a safety warning to alert the driver it is not in park so the vehicle doesn’t roll off and hit someone (especially a child playing in the driveway). Assuming that alert is just a malfunction could get someone killed. I did notice that this was considered a safety recall for some models of GMC vehicles but not others. I’m not sure why there hasn’t been a recall on these trucks when the service manager specifically said they are having this issue on a lot of trucks.

The screen shakes. Goes black. Zooms in randomly without prompting. Started dialing up people from recent calls. While trying to get the navigation working. I started drifting into oncoming traffic. Fortunately was able to course correct and avoid collision. Buttons are most time not responsive to touch. It is distracting. The system has never fully worked as promised and is a distraction. And as a result a serious safety hazard.

The onstar module in the truck is broke it affects all communications. The truck has including things like let me know what the speed limit is. It happened after they did a software update, which seems a little fishy because there was nothing wrong with it before I understand. Some people were having problems with this module, causing their batteries to die, but now I’m the one having issues and they won’t seem to fix it unless I pay them $900.

For no apparent reason the truck goes into “low power mode” and gives off code p2138 often happens around 30-35 mph. Have had it happen to me also around 45 mph also. I have replaced sensors and parts to which a month or so goes by and it happens again.

See all problems of the 2015 GMC Sierra 1500 🔎.

They should be responsible for repairs or replacement of the cheap made frames that rust away so fast so u ain’t gotta worry about your truck fallling apart going down the rd and the lower control arms made of cast that rust from inside out and you don’t know until breaks while driving along with camber adjustments where they can throw alignment out with a single bump. Mostly the frame replacement is major always having to plate frame or check to make sure it will be able travel long trips or haul stuff in bed or a trailer with breaking or falling off truck causing wreck frame repair is major and time consuming if you don’t have proper stuff and definitely expensive and lower control arms that’ll make a wheel come real fast and it’s time consuming and expensive too but very dangerous and breaks and causes damage right then and there at high or low speed on highways or interstates.

See all problems of the 2012 GMC Sierra 1500 🔎.