Gmc problems
GMC (formerly the General Motors Truck Company (1911–1943), or the GMC Truck & Coach Division (1943–1998)) is a division of American automotive manufacturer General Motors (GM) for trucks and utility vehicles. GMC currently makes SUVs, pickup trucks, vans, and light-duty trucks. In the past, GMC also produced fire trucks, ambulances, heavy-duty trucks, military vehicles, motorhomes, transit buses, and medium duty trucks.
While many of their vehicles are mechanically similar, GMC is positioned as a premium offering to the mainstream Chevrolet brand, and includes the luxury trim Denali. In North America, GMC vehicles are almost always sold alongside Buick (another premium brand) vehicles at multi-brand dealerships.
History
Roots to the GMC brand can be traced to 1900, when the "Grabowsky Motor Company" was established by brothers Max (1874-1946) and Morris Grabowsky, in Detroit, and renamed Rapid Motor Vehicle Company in 1902 when the brothers moved operations to Pontiac, Michigan. In 1909, William C. Durant gained control of Rapid Motor Vehicle Company and made it a subsidiary of his General Motors Company.
In 1911, General Motors formed the "General Motors Truck Company" and folded Rapid and Reliance Motor Car Company (another early commercial vehicle manufacturer that Durant had acquired in 1908) into it. In 1912, the Rapid and Reliance names were dropped in favor of "GMC". All General Motors truck production was consolidated at the former Rapid Motor Plant 1 in Pontiac, Michigan.
GMC maintained three manufacturing locations in Pontiac, Michigan, Oakland, California, and St. Louis, Missouri .
In 1916, a GMC truck crossed the country from Seattle to New York City in thirty days, and in 1926, a 2-ton GMC truck was driven from New York to San Francisco in five days and 30 minutes. During the First World War, the company provided the Model 16 3/4-ton truck, and modified its production to provide 1-ton troop carriers and aviation support vehicles, and by 1918, more than 90 percent of GMC truck production was for military use. GMTC provided a total of 8512 trucks to the U.S. government during the war years and earned a Distinguished Service Award. During the Second World War, GMC Truck produced 600,000 trucks for use by the United States Armed Forces.
In 1923, GMC trucks were exported to Japan to help recovery and reconstruction as a result of the Great Kantō earthquake, and the company continued to provide vehicles as the transportation infrastructure was rebuilt. Before the earthquake struck, most of Japan's transportation of commerce and people was by wooden carts and government owned railroads, which were severely damaged when the train tracks were twisted beyond use. Autonomous trucks were much more effective at traveling to heavily damaged areas.
In 1925, GM purchased a controlling interest in Yellow Coach, a bus and taxicab manufacturer based in Chicago, Illinois which was founded by John D. Hertz. The company was renamed Yellow Truck & Coach Manufacturing Company (YT&CMC), an affiliated subsidiary of General Motors. All manufacturing operations of General Motors Truck Company were placed under YT&CMC. In 1928 Plant 2 opened and all headquarters staff moved to the administration building at 660 South Boulevard E in Pontiac, MI. In 1943, GM purchased the remaining interest in YT&CMC and renamed it GMC Truck and Coach Division.
In 1981, GMC Truck & Coach Division became part of GM Worldwide Truck & Bus Group. Bus production ended in May 1987 and the division name was changed from GMC Truck & Coach to GMC Truck Division. The Canadian plant (in London, Ontario) produced buses from 1962 until July 1987. GM withdrew from the bus and coach market because of increased competition in the late 1970s and 1980s. Rights to the RTS model were sold to Transportation Manufacturing Corporation, while Motor Coach Industries of Canada purchased the Classic design. In 1998, GMC's official branding on vehicles was shortened from "GMC Truck" to simply "GMC".
In 1996, GM merged GMC Truck Division with the Pontiac Motor Division in order to "give the combined division a brand image projecting physical power and outdoor activity". This coincided with many GMC dealerships merging with Pontiac dealerships, allowing a single dealer to offer both trucks and entry-to-mid-level cars, using a similar approach already in use by Chevrolet.
In 2002, GMC celebrated its 100th anniversary and released a book entitled GMC: The First 100 Years, a complete history of the company.
In 2007, GMC introduced the Acadia, a crossover SUV, which was the division's second unibody vehicle (after the Vandura) whose predecessor, the GMT-360 based Envoy, was discontinued with the closure of GM's Moraine, Ohio plant on December 23, 2008.
In 2009, GMC ended production of medium-duty commercial trucks after over 100 years. They became exclusive to Chevrolet with the launch of the 4500HD/5500HD Silverado in 2018. Also in 2009, GMC introduced the Terrain, a mid-size crossover SUV based on the GM Theta platform shared with the Chevrolet Equinox. It replaced the Pontiac Torrent after the brand's demise.
In 2020, General Motors announced the return of the Hummer nameplate, this time as a sub-brand of GMC instead of a stand-alone division. The Hummer lineup includes two models, an electric pickup truck and SUV, to be sold as the "GMC Hummer EV". According to GM, the Edition 1 production electric pickup truck will feature 1,000 horsepower, hit 60 mph in 3 seconds and is scheduled to launch in late 2021. The new Hummer EV was revealed on October 20, 2020.
In 2022, the GMC brand was introduced in South Korea as a subsidiary of GM Korea.
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Gmc models
Common Gmc problems
Common Problems with GMC Cars
GMC vehicles, like any other brand, have their share of common problems. These issues can affect the overall driving experience and may require costly repairs if not addressed promptly. Here are some of the most common problems with GMC cars, based on complaints from owners:
- Electrical System: The second most common problem area is the electrical system, with 4,841 reported cases.
- Engine and Engine Cooling: Engine and engine cooling system problems have been reported 3,848 times across all GMC models.
- Power Train: The power train, which includes the engine, transmission, drive shafts, differentials, and the final drive, has had 3,550 reported issues.
- Air Bag: Issues related to the airbag system have been reported 3,532 times across all GMC models.
- Transmission Problems: Transmission problems are a common issue with GMC vehicles, particularly with the Sierra 1500 and Yukon models.
- A/C and HVAC Issues: A/C and HVAC issues are common problems with GMC vehicles, particularly with the Acadia and Yukon models.
- Poor Lighting and Headlight Visibility: Poor lighting and headlight visibility are common problems with GMC vehicles, particularly with the Sierra 1500 model.
- Exhaust Leaks and Excessive Oil Consumption: Exhaust leaks and excessive oil consumption are common problems with GMC vehicles, particularly with the Envoy and Acadia models.
- Stability Control System Malfunctions: Stability control system malfunctions are common problems with GMC vehicles, particularly with the Terrain model.
In conclusion, while GMC vehicles are known for their durability and performance, they do have their share of common problems. By familiarizing yourself with these issues, you can ensure that your GMC vehicle remains in its best condition and take steps to address any issues promptly. Regular maintenance and repairs are key to preventing most of these common problems.
Percentage distribution of complaints by Gmc models
We have analysed all the complaints filed against Gmc cars and compiled the top 5 most problematic Gmc models:
Below you can see the percentage distribution of known problems by Gmc brand.
Distribution of the number of complaints by Gmc models
We have also compiled a table for you with the number of complaints about specific models of Gmc cars:
Distribution of Gmc car problems by type
Based on an anlyse of all Gmc related complaints and concluded that the most common problems with Gmc cars are the following:
- Service brakes problems
- Electrical system problems
- Hydraulic problems
- Air bags problems
- Power train problems
Below is a graph with statistics on all Gmc vehicle components and the number of complaints about them.
Distribution of the number of complaints where the accident occurred by Gmc models
A total of 2923 complaints were registered in which the accident occurred. In the graph you can see the distribution of the number of complaints by model.
Distribution of the number of complaints with fire by Gmc models
There were a total of 868 complaints that resulted in a fire. In the graph you can see the distribution of the number of complaints by model.
Distribution of the number of complaints with injuries by Gmc models
There were a total of 2685 complaints that resulted in a injuries. In the graph you can see the distribution of the number of complaints by model.
Distribution of the number of complaints with deaths by Gmc models
There were a total of 96 complaints that resulted in a death. In the graph you can see the distribution of the number of complaints by model.
The NHTSA has received 52211 complaints about various vehicle components related to the Gmc Gmc. Below are 15 recent complaints about various Gmc models. In order to research complaints about a particular brand you need to select it from the list of available models above.
List of the last 15 complaints about Gmc models
Gmc Sierra 1500 2024
- Date Of Incident: 2024-10-27
- Date Complaint: 2024-10-27
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 1GTUUHEL3RZ
- Components: EXTERIOR LIGHTING,UNKNOWN OR OTHER
- Summary: The reverse lights and high-definition camera system are woefully insufficient for backing up this truck safely in the dark. I have experience several near-misses due to the poor nighttime performance of the video system and reverse lights. This has been ongoing since the vehicle was purchased new. It impacts both the video displayed in the main touchscreen and the video rear view mirror. Furthermore, the reverse lights are sealed LED units that are non-serviceable.
Gmc Sierra 1500 2019
- Date Of Incident: 2024-09-19
- Date Complaint: 2024-10-26
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 1GTR8CED7KZ
- Components: ENGINE
- Summary: While driving the transmission lurches forward when I give it gas after slowing down or when I come to a complete stop. Also it makes a shuddering type noise randomly when driving and it feels like the truck is about to shut off. These issues happen on multiple occasions.
Gmc Sierra 2500 2016
- Date Of Incident: 2024-10-25
- Date Complaint: 2024-10-25
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 1
- Fire: 0
- VIN: 1GTV2MEC2GZ
- Components: ELECTRICAL SYSTEM,AIR BAGS
- Summary: The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would lose automotive power. The vehicle was taken to a dealer where the negative battery was replaced. The vehicle was repaired. The contact stated that while her husband was driving at approximately 45 MPH, a deer ran into the middle of the roadway and impacted the front grill and bumper. The Service Air Bag warning light was illuminated. After the impact, the contact noticed smoke was leaking into the interior of the vehicle from the front driver-side and passenger-side air bags. The contact stated that the vehicle would not move forward or reverse after the impact. The contact stated that the front driver-side and passenger-side seat belts failed to retract or extend. The contact and her husband were able to unbuckle the seat belts and safely exit the vehicle in time. No injuries were sustained. No police reports or fire reports were filed. The vehicle was deemed a total loss and was towed to the contact's home where it remained for further investigation. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made not aware of the failure. The failure mileage was approximately 75,000.
Gmc Sierra 3500 2016
- Date Of Incident: 2024-10-25
- Date Complaint: 2024-10-25
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 1
- Fire: 0
- VIN: 1GTV2MEC2GZ
- Components: ELECTRICAL SYSTEM,AIR BAGS
- Summary: The contact owned a 2016 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle would lose automotive power. The vehicle was taken to a dealer where the negative battery was replaced. The vehicle was repaired. The contact stated that while her husband was driving at approximately 45 MPH, a deer ran into the middle of the roadway and impacted the front grill and bumper. The Service Air Bag warning light was illuminated. After the impact, the contact noticed smoke was leaking into the interior of the vehicle from the front driver-side and passenger-side air bags. The contact stated that the vehicle would not move forward or reverse after the impact. The contact stated that the front driver-side and passenger-side seat belts failed to retract or extend. The contact and her husband were able to unbuckle the seat belts and safely exit the vehicle in time. No injuries were sustained. No police reports or fire reports were filed. The vehicle was deemed a total loss and was towed to the contact's home where it remained for further investigation. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made not aware of the failure. The failure mileage was approximately 75,000.
Gmc Sierra 2008
- Date Of Incident: 2024-09-10
- Date Complaint: 2024-10-25
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 1GTHK29688E
- Components: WHEELS
- Summary: No accident happened as the wheel was never installed due to not meeting the load weight capacity rating of the vehicle. The wheel is marked max load 1150kg (2230 per axle) and the vehicle weight loading label shows the rear axle capacity at 2706kg. The wheel is also marked as SAE J2530 compliant but does not meet J2530 section 3.5 due to the low load capacity. These wheels are widely available in the aftermarket and list most of the 2000-2010 GM 2500HD/3500 pickups as the application but do not meet load capacity on any of them. Please note that the VIN is for a typical 2008 Sierra 2500HD pickup in a scrap yard. I do not own that vehicle. It is a weight label photo from Hollander parts finder on that pickup.
Gmc Terrain 2019
- Date Of Incident: 2024-10-21
- Date Complaint: 2024-10-24
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GKALMEV1KL
- Components: SERVICE BRAKES,ENGINE
- Summary: I was riding on the freeway when my brakes failed. i was not able to press down on my brakes with zero warning. I had to swerve to miss cars and pull on the shoulder of the freeway and my car still would not slow down. I finally got from 65 to 35 and pressed on my emergency brakes. I stopped the vehicle then my engine light came on and I got my car towed to the car shop where my car would not stop and suffered internal damage to my engine from the brakes and vacuum pump
Gmc Sierra 1500 2018
- Date Of Incident: 2024-10-17
- Date Complaint: 2024-10-24
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GTU2NEJXJG
- Components: POWER TRAIN
- Summary: The contact owns a 2018 GMC Sierra 1500. The contact stated that while driving approximately 28 - 35 MPH, the vehicle started shaking abnormally. There were no warning lights illuminated. The contact continued driving cautiously. The vehicle was taken to the dealer to be diagnosed and it was determined that the torque converter had failed and needed to be replaced. The vehicle had not been repaired. The contact stated that the torque convertor had been replaced twice with the first replacement performed at approximately 27,000. The manufacturer was made aware of the failure. The manufacturer had referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 66,000.
Gmc Terrain 2014
- Date Of Incident: 2023-08-31
- Date Complaint: 2024-10-24
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 2GKALMEK4E6
- Components: ENGINE
- Summary: Oil consumption issue caused timing chain to go causing catastrophic damage to the engine resulting in over 3000$ in repairs the oil light does not come on nor does it have a low oil pressure warning
Gmc Terrain 2014
- Date Of Incident: 2024-10-18
- Date Complaint: 2024-10-23
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 2GKALSEKXE6
- Components: STEERING,ENGINE
- Summary: The contact owns a 2014 GMC Terrain. The contact stated while at a complete stop at a red light, the doors were making locking and unlocking sounds. The contact stated upon depressing the accelerator pedal to resume driving, the vehicle failed to exceed 25 MPH. The messages "Service Stabili-trak" and "Service Power Steering" were displayed, and the check engine warning light was illuminated. The contact was able to drive to the residence. The vehicle was towed to the dealer, where it was being diagnosed. The vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 159,500.
Gmc Sierra 1500 2017
- Date Of Incident: 2024-10-22
- Date Complaint: 2024-10-23
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GTU2NEC7HG
- Components: ENGINE
- Summary: lifter going bad
Gmc Sierra 1500 2018
- Date Of Incident: 2024-10-01
- Date Complaint: 2024-10-23
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GTU2NEC4JG
- Components: ELECTRICAL SYSTEM,SERVICE BRAKES
- Summary: The brakes sometimes lock up after use, or don’t disengage ( on one side) and the truck swerves ( steering wheel turns to the right ) into the next lane. I have to over correct and you can hear the brakes squeal. I will have to get off the freeway or the road. I am on trying to track off a couple of times for 5 to 10 minutes Until it stops doing it. It does it on average once to Twice a day. Was told could be brake calipers hoses, speed sensors sending the wrong information to the ABS system. It is very dangerous to drive the truck on the freeway doing 75 miles an hour!
Gmc Sierra 1500 2023
- Date Of Incident: 2024-08-14
- Date Complaint: 2024-10-23
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GTUUDED1PG
- Components: LATCHES/LOCKS/LINKAGES
- Summary: The contact owns a 2023 GMC Sierra 1500 equipped with a Roll-N-Lock tonneau cover. The contact stated that the tonneau cover failed to lock and latch securely since the vehicle was purchased brand new. The vehicle was taken to the dealer, where unknown repairs were performed; however, the failure persisted. Additionally, the contact stated that the latching part of tonneau cover was missing an inch-long piece. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
Gmc Yukon denali 2016
- Date Of Incident: 2021-10-23
- Date Complaint: 2024-10-23
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 1GKS2CKJ0GR
- Components: POWER TRAIN
- Summary: The contact owns a 2016 GMC Yukon Denali. The contact stated while driving at various speeds, the transmission was slipping between gear. The vehicle was taken to the dealer; however, the failure could not be duplicated. The dealer replaced the transmission fluid twice; however, the failure recurred. The vehicle was taken to the dealer, where it was determined that the transmission wiring harness had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 65,000.
Gmc Acadia 2014
- Date Of Incident: 2024-10-22
- Date Complaint: 2024-10-22
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 1GKKVRKDXEJ
- Components: AIR BAGS
- Summary: The contact owns 2014 GMC Acadia. The contact received notification of NHTSA Campaign Number: 23V334000 (Air Bags); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Gmc Sierra 1500 2022
- Date Of Incident: 2024-08-19
- Date Complaint: 2024-10-22
- Number Of Injuries: 0
- Number Of Deaths: 0
- Crash: 0
- Fire: 0
- VIN: 3GTUUEET2NG
- Components: STRUCTURE
- Summary: Grille trim piece came detached while driving on freeway damaging hood. Could have flown off and hit another vehicle. Took truck to dealership and it was replaced under warranty. Seems to be a known defect, lots of other people with same issue on Reddit.
Latest 5 Gmc recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 1701 recalls involving various Gmc models.You can learn more about the model you are interested in by selecting it from the list.
- Model: Gmc Sierra 2500 2019
- Report Received Date: 2024-10-10
- Manufacturer: General Motors, LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
- Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
- Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters are expected to be mailed November 25, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
- Model: Gmc Sierra 1500 2018
- Report Received Date: 2024-10-10
- Manufacturer: General Motors, LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
- Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
- Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters are expected to be mailed November 25, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
- Model: Gmc Sierra 3500 2018
- Report Received Date: 2024-10-10
- Manufacturer: General Motors, LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
- Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
- Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters are expected to be mailed November 25, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
- Model: Gmc Sierra 2500 2018
- Report Received Date: 2024-10-10
- Manufacturer: General Motors, LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
- Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
- Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters are expected to be mailed November 25, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
- Model: Gmc Sierra 3500 2019
- Report Received Date: 2024-10-10
- Manufacturer: General Motors, LLC
- Components: AIR BAGS:SIDE/WINDOW:CURTAIN:INFLATOR
- Summary: General Motors, LLC (GM) is recalling certain 2018 Chevrolet Silverado 1500, GMC Sierra 1500, 2018-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 Crew Cab trucks. The left or right-side roof-rail air bag (RRAB) inflator end cap may detach from the inflator or the inflator sidewall may rupture.
- Consequence: A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the vehicle, increasing the risk of injury or crash.
- Remedy: Dealers will replace the left and right side RRAB modules, free of charge. Owner notification letters are expected to be mailed November 25, 2024. Owners may contact Chevrolet customer service at 1-800-222-1020, and GMC Customer Service at 888-988-7267. GM's number for this recall is N242474500.
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