Category Archives: Chevrolet

News about Chevrolet automobile manufacturer. News about Chevrolet recalls, technical service bulletins (TSB), and problems regarding Chevrolet vehicles.

GM Wheel Lock-Up From Transmission Control Valve Defect

Posted on by

General Motors (GM) has announced a safety defect affecting the transmission control valve in certain Chevrolet, GMC, and Cadillac vehicles equipped with diesel engines. The issue involves excess wear on the transmission control valve, which could lead to a gradual loss of pressure. This defect has the potential to cause harsh shifting, and in rare cases, a momentary lock-up of the rear wheels.

The Affected Vehicle Models Are:

2021 Cadillac Escalade
2021 Cadillac Escalade ESV
2020-2022 Chevrolet Silverado 1500
2020-2022 Chevrolet Silverado 2500
2020-2022 Chevrolet Silverado 3500
2021 Chevrolet Suburban
2021 Chevrolet Tahoe
2020-2022 GMC Sierra 1500
2020-2022 GMC Sierra 2500
2020-2022 GMC Sierra 3500
2021 GMC Yukon
2021 GMC Yukon XL

GM first became aware of this issue in June 2024 through the company’s Speak Up for Safety (SUFS) program, after a customer claimed that the rear wheels of a 2021 GMC Sierra 2500 HD pickup allegedly locked up while towing a trailer. The incident caused property damage to both the vehicle and the trailer. This report prompted GM to open a new investigation.

Previously, GM had already investigated the condition, finding that excessive wear in the transmission control valve could cause harsh downshifting and, in some cases, a momentary lock-up of the rear wheels. Earlier tests and analyses suggested that the lock-up was unlikely to lead to loss of vehicle control, and no accidents or injuries were reported at the time.

In July, the National Highway Traffic Safety Administration (NHTSA) notified GM that its Vehicle Owner Questionnaire (VOQ) monitoring process had flagged additional reports that could be related to this issue. GM’s investigators conducted an extensive analysis of these reports and reviewed comprehensive field data, identifying 1,888 field reports alleging a potential lock-up condition. Further examination revealed eleven specific incidents where the vehicles veered off the road, causing minor property damage. There were also three minor injuries reported, although none were linked to a collision.

Based on these findings, GM’s Safety Field Action Decision Authority (SFADA) decided in October to initiate a safety recall.

To address the defect, GM dealers will install updated transmission control module software. This software will monitor valve performance and detect signs of excess wear approximately 10,000 miles before a wheel lock-up condition could occur. If excess wear is detected, the software will limit the transmission to fifth gear, effectively preventing a wheel lock-up scenario, which typically happens during a downshift from eighth gear. Additionally, the vehicle’s instrument panel will display a service engine light and a reduced propulsion warning message to alert the driver. GM’s number for this recall is N242454440 and the NHTSA campaign number is 24V-797.

Investigation into Fire Hazards of Enel X Way USA’s JuiceBox Level 2 Residential EV Chargers

Posted on by

Enel X Way USA’s JuiceBox Level 2 residential EV chargersThe National Highway Traffic Safety Administration (NHTSA) has launched an investigation into potential fire hazards associated with Enel X Way USA’s JuiceBox Level 2 residential EV chargers. Prompted by several complaints received by the Office of Defects Investigation (ODI), this evaluation aims to determine the extent and safety implications of electrical arcing and thermal incidents reported by users of these chargers. This probe focuses on the potential for fire risks arising from electrical malfunctions and the company’s recent operational shutdown announcement.

Summary of Complaints Filed with ODI

ODI has received six Vehicle Owner Questionnaires (VOQs) concerning alleged incidents involving the JuiceBox Level 2 charger. These complaints raise serious concerns regarding potential fire hazards that may arise while charging electric vehicles at home. The following highlights from the complaints showcase the range of issues reported:

  1. Total Home Loss Due to Explosion: One complaint involves a significant incident where a vehicle owner claims that charging their EV with a JuiceBox led to an explosion in their garage. This catastrophic event resulted in a fire that destroyed the home entirely.
  2. Car Fire in Driveway: Another complaint describes an incident where a vehicle caught fire in the driveway while connected to a JuiceBox charger. The details of this incident underscore concerns about charger reliability and the potential for dangerous outcomes.
  3. Electrical Malfunctions and Circuit Breaker Issues: Four additional complaints describe issues with electrical malfunctions that caused circuit breakers to trip and charging cycles to be disrupted. These electrical disruptions may indicate underlying issues with the chargers’ compatibility or durability under varying conditions.

Enel X Way’s Operational Shutdown and Potential Impact on User Safety

In an unexpected development, Enel X Way North America announced its intention to cease operations in the United States and Canada by October 11, 2024. A notification was sent to JuiceBox owners on October 2, 2024, which was also posted on the company’s website. This cessation of operations could potentially impact several aspects of the product’s performance and user experience:

  • Software and App Support: As Enel X Way discontinues its North American presence, questions remain about the continuity of the charging app and supporting software. Given that many smart chargers rely on connected software for updates and safety monitoring, the lack of support could leave users with outdated or unsupported technology.
  • Customer Support and Warranty Services: The cessation of operations may also impact the company’s ability to provide customer support, particularly regarding ongoing technical issues, troubleshooting, or warranty claims for JuiceBox chargers.

ODI Preliminary Evaluation and Safety Scope

In response to these serious complaints, ODI has opened a Preliminary Evaluation to examine the safety and reliability of JuiceBox Level 2 chargers. The purpose of this evaluation is to assess the scope, frequency, and potential hazards associated with these products. The investigation seeks to determine:

  • Risk of Fire and Explosion: By evaluating complaints of thermal events, such as the explosion in the garage and the driveway car fire, ODI aims to understand the risk factors and whether the JuiceBox charger’s design or operational faults are contributing factors.
  • Electrical Stability and Safety Consequences: ODI’s analysis will also delve into the frequency of electrical malfunctions and whether these events pose a risk of property damage, personal injury, or loss of life.
  • Impact of Software and Operational Changes: With the discontinuation of Enel X Way North America’s operations, ODI is concerned about the potential safety implications arising from the lack of app and software support. The investigation will evaluate if and how this operational change might exacerbate existing safety concerns or introduce new risks.

Affected Vehicles and Part Numbers

The ODI investigation includes a review of incidents involving various EV models that utilized the JuiceBox Level 2 charger. The vehicles associated with these complaints include:

  • Chevrolet Bolt EV (2018)
  • Chrysler Pacifica Hybrid (2018)
  • Hyundai Ioniq 5 (2022)
  • Hyundai Ioniq 6 (2023)

Additionally, the specific product part under scrutiny is the Enel X JuiceBox Level 2 Charger.

Steps for Consumers and Further Information

For EV owners who currently use the JuiceBox Level 2 charger, awareness of this investigation is crucial. Users are encouraged to follow any guidance issued by the NHTSA and consider consulting with licensed electricians to ensure proper installation and safe operation of their EV chargers.

GM Roof Rail Air Bag Inflator Defect

Posted on by

General Motors (GM) have identified a safety issue affecting certain Chevrolet and GMC vehicles. This issue involves a defect in the roof-rail airbag (RRAB) inflator, which could pose a serious risk to the safety of drivers and passengers. The defect may cause the inflator to malfunction, potentially resulting in the separation of the inflator’s end cap or a split in its sidewall. If this happens, the airbag system may not deploy as intended, increasing the risk of injury in the event of a crash or other incident.

Affected Vehicle Models

The following models are impacted by this recall due to the potential defect in the RRAB inflators:
2018 Chevrolet Silverado 1500
2018-2019 Chevrolet Silverado 2500
2018-2019 Chevrolet Silverado 3500
2018 GMC Sierra 1500
2018-2019 GMC Sierra 2500
2018-2019 GMC Sierra 3500

How the Issue Was Discovered

GM became aware of this problem in August 2024, after receiving reports of four incidents where RRAB inflators ruptured in vehicles from another manufacturer. These reports raised concerns about a possible defect in the inflator system, prompting GM to initiate its own investigation. During this investigation, GM found evidence of a similar incident involving a 2018 Chevrolet Silverado 2500, which was equipped with the same type of inflators.

In this particular case, the vehicle was parked and unoccupied when the RRAB inflator on the right side ruptured. Photos confirmed the inflator malfunctioned while the truck was idle, reinforcing concerns about the integrity of the RRAB system. GM is continuing its investigation to determine the exact cause of the failure.

Steps Taken by GM

On October 3, 2024, GM’s Safety Field Action Decision Authority (SFADA) determined that a safety recall was necessary. This recall affects vehicles that were built using RRAB inflators from the same production lot as the Chevrolet Silverado 2500 involved in the initial incident. As of now, GM has not received any further reports of similar incidents involving its vehicles.

What Owners Need to Know

To address this issue, GM dealers will replace the left and right roof-rail airbag modules in the affected vehicles. This recall is part of GM’s proactive efforts to ensure vehicle safety and prevent potential accidents resulting from defective inflators.

For reference, GM has assigned this recall the number N242474500, and the National Highway Traffic Safety Administration (NHTSA) has labeled it as campaign number 24V-560.

Certain 2023-2024 GM Vehicles Fail to Meet FMVSS for Brake Systems

Posted on by

Certain 2023-2024 Cadillac, Chevrolet and GMC vehicles fail to meet the Federal Motor Vehicle Safety Standard (FMVSS) for light vehicle baking systems. The problem is, the driver may not receive an indicator of a loss of brake fluid before the level is below FMVSS 135’s requirement.

The FMVSS 135 requires that vehicles have a system in place to warn the driver when the brake fluid level drops to a certain point. This allows time for the problem to be addressed before it affects braking performance. However, in the affected vehicles, the brake fluid warning light may not illuminate in time to alert the driver before the fluid drops below the required level. This delay in the warning light could lead to reduced brake performance, increasing the risk of a crash.

The following vehicle models are affected by this problem:

2023-2024 Cadillac Escalade
2023-2024 Cadillac Escalade ESV
2023 Chevrolet Silverado 1500
2023-2024 Chevrolet Suburban 1500
2023-2024 Chevrolet Tahoe
2023 GMC Sierra 1500
2023-2024 GMC Yukon
2023-2024 GMC Yukon XL

GM became aware of this issue through its Speak Up for Safety (SUFS) program. A GM engineer noticed during a brake fluid leak test that the required warning light (referred to as the BRAKE telltale) did not illuminate as expected. This led GM to launch a full investigation. The issue was traced to a mismatch in the software and calibrations of the Electronic Brake Control Module (eBCM). This software mismatch was preventing the vehicle from detecting a brake fluid leak in time to alert the driver. Fortunately, GM has not received any reports of crashes or injuries related to this issue, but the potential for delayed notification of a brake fluid leak poses a safety concern.

In the event of a brake fluid leak, the vehicle’s brake pedal could become less responsive before the warning light appears. This degraded brake performance, combined with the delayed warning, could increase the likelihood of a crash. However, GM has confirmed that even in these circumstances, the vehicles still meet federal stopping distance requirements, meaning they should still be able to stop within the legally required distance.

Owners of affected vehicles will be notified by mail starting October 28, 2024. GM will provide a software update for the eBCM that will correct the issue. This update can be done remotely through an over-the-air (OTA) update or by visiting a dealership. If you own one of these vehicles, you do not need to take immediate action unless you notice any issues with your brakes. The recall is precautionary, and the software update will ensure that your vehicle meets all federal safety standards moving forward.

GM’s recall number for this issue is N242447990, and the National Highway Traffic Safety Administration (NHTSA) campaign number is 24V-674.

Phantom Braking Issue In Certain 2023 Chevrolet Colorado and GMC Canyon Trucks

Posted on by

2023 Chevrolet Colorado and GMC CanyonIn the realm of automotive safety, the emergence of advanced driver assistance systems (ADAS) has promised to revolutionize the driving experience, offering heightened levels of safety and convenience. However, as with any technological advancement, occasional glitches and malfunctions can arise, potentially jeopardizing the safety of drivers and passengers alike. Such is the case with the “phantom braking” issue that has plagued certain 2023 Chevrolet Colorado and GMC Canyon trucks.

The issue came to light in September 2023, when reports of unexpected automatic emergency braking (AEB) incidents surfaced in General Motors (GM) vehicles in China. GM initiated an investigation through its Speak Up For Safety (SUFS) program, aiming to identify the root cause of the problem and implement appropriate corrective measures.

Upon investigation, it was discovered that the faulty behavior stemmed from the Front Camera Module (FCM) system, a crucial component responsible for detecting obstacles and triggering AEB when necessary. Under certain conditions, the FCM’s software exhibited erroneous detection of obstacles, resulting in unwarranted activation of the AEB system. This phenomenon, referred to as “phantom braking,” poses a significant safety risk, potentially leading to accidents and injuries.

GM, in collaboration with its supplier, conducted rigorous testing and analysis to pinpoint the underlying cause of the malfunction. This involved examination of field data from various sources, including different versions of the FCM software, vehicles produced in different periods, and reports from both the U.S. and China.

A total of 234 field complaints in the U.S. were potentially linked to the phantom braking issue. Among these incidents, four resulted in accidents, with three causing minor injuries to occupants. GM’s Safety Field Action Decision Authority (SFADA) made the decision to initiate a safety recall in February 2024.

The recall, identified by GM as A232424660 and by the National Highway Traffic Safety Administration (NHTSA) as campaign number 24V-133, involves a corrective measure aimed at rectifying the software glitch in the FCM. Authorized dealerships will apply updates to the FCM software, effectively addressing the root cause of the phantom braking issue and restoring the intended functionality of the AEB system.

In conclusion, while the emergence of advanced driver assistance systems has undoubtedly enhanced automotive safety, incidents such as the phantom braking issue serve as a stark reminder of the importance of vigilance and proactive intervention. Through swift action and collaboration between manufacturers, suppliers, and regulatory agencies, the automotive industry can continue to push the boundaries of safety innovation, ensuring that drivers can enjoy the benefits of technology without compromising their well-being on the road.

GM “Stop Delivery” On Certain Chevy Blazer, Chevy Equinox And GMC Terrain Vehicles

Posted on by

Chevy Blazer EV Stop Delivery

General Motors (GM) has announced an immediate stop delivery order for certain 2024 model vehicles, including the Chevrolet Blazer, Chevrolet Blazer EV, Chevrolet Equinox, and GMC Terrain vehicles. This decision, taken as a precautionary measure to ensure customer satisfaction and vehicle reliability.

The specific issue prompting this stop delivery order has not been publicly disclosed by General Motors. The order is categorized under “Global Safety Field Investigations,” suggesting that GM is actively working to identify and rectify the underlying problem. The lack of detailed information at this stage highlights the company’s cautious approach in handling potential vehicle issues.

Affected vehicles have been identified through their Vehicle Identification Numbers (VINs), with a clear directive that these vehicles should not be sold or delivered by dealers until further details and solutions are provided. This restriction also prohibits dealer trades, auction releases, demonstration uses, or any other dealership activities involving these models. To facilitate this process, GM has updated the Investigate Vehicle History (IVH) screen in the Global Warranty Management (GWM) system, which now tags the affected vehicles with a “Stop Delivery” status and labels the VIN as “Incomplete Remedy Not Available.”

One significant concern that has emerged is related to software issues in the 2024 Chevrolet Blazer EV, which uses GM’s advanced Ultium battery system. A small number of Blazer EV owners have reported issues with the software quality, prompting Chevrolet to temporarily halt sales and deliveries of this model. This pause is intended to ensure that the vehicles delivered meet GM’s high standards for quality and reliability. Notably, the software problems cannot be resolved through an over-the-air (OTA) update, necessitating a visit to the dealership for service.

GM has assured customers and stakeholders that these software issues are not safety-related and do not pertain to the Ultium battery system or the Google Built-in features. The engineering teams at GM are actively working on a solution. Affected vehicle owners will be contacted by GM with instructions on scheduling their software updates.

This stop delivery order, labeled under GM number N232429910, is a measure by GM to preemptively address potential issues before they impact customers. As the situation evolves, GM is expected to provide further updates and guidance to both dealerships and vehicle owners.

GM Issues Safety Recall for Chevrolet Bolt EVs Due to Seat Belt Pretensioner Fire Risk

Posted on by

Seat belt pretensioner problem Discovery and Investigation of the Defect

The issue was initially brought to GM’s attention on August 29, 2023, by an employee through the company’s Speak Up For Safety (SUFS) program. This action followed a dealer report from Simpson Chevrolet of Irvine, indicating that 66 vehicles repaired under the earlier recall 22V930 had not been properly fixed. Subsequent investigations, initiated by GM on October 10, 2023, uncovered further evidence suggesting Simpson Chevrolet of Irvine’s failure to execute the necessary recall repairs.

Further investigations by GM revealed no direct complaints or incidents linked to this condition. However, the seriousness of the potential risk prompted the GM Safety Field Action Decision Authority (SFADA) to mandate a safety recall for all 22V930 repairs completed by Simpson Chevrolet of Irvine up to December 4, 2023.

Risks Associated with the Defect

The central concern revolves around the seat belt pretensioner. If a crash occurs and the recall remedy has not been implemented, the seat belt pretensioner’s deployment could ignite a fire near the B-pillar, elevating the risk of injury. After a collision, the pretensioner exhaust may set fire to carpet fibers in this area.

Remedy and Owner Notification

To address this issue, GM dealers will inspect both front seat belt pretensioners. If necessary, they will install metal foil at the carpet near the pretensioner exhaust, and some vehicles may also require a new pretensioner cover. These repairs will be conducted free of charge. GM plans to send owner notification letters by January 29, 2024. Notably, these vehicles had been previously recalled for the same issue under recall number 22V-793, necessitating the implementation of this new remedy. The GM recall number is N232421970, and the NHTSA campaign number is 23-845.

Repeated Repairs and California Lemon Law

The situation with the Chevrolet Bolt EV highlights an important aspect of consumer rights, especially in states like California with robust Lemon Laws. The California Lemon Law provides protection to consumers who have purchased or leased vehicles with warranty defects. If a vehicle requires repeated repairs for the same issue, owners may be entitled to compensation, including a refund or replacement vehicle. This law ensures that manufacturers are held accountable for their vehicles’ reliability and safety, offering peace of mind to consumers facing repeated repair issues.

In conclusion, GM’s steps in recalling and repairing these vehicles underscore the importance of automotive safety and consumer protection. Vehicle owners are advised to heed recall notices and ensure their vehicles receive the necessary repairs to mitigate any risks associated with this defect.

Seat Belt Issue in Certain GMC Hummer EVs

Posted on by

General Motors (GM) has recently identified a significant safety defect in some of its electric vehicles (EVs). This issue, affecting specific 2023-2024 model year GMC Hummer EV Pickups, 2024 GMC Hummer EV SUVs, and certain 2024 Chevrolet Silverado EVs, revolves around a crucial component of vehicle safety: the seat belt.

Discovery and Investigation of the Defect

In August 2023, a GM seat engineer, utilizing the company’s Speak Up for Safety (SUFS) program, reported a potential flaw after being alerted by GM’s seat supplier. The concern was about a loose front seat belt buckle bolt in a seat built for a 2024 HUMMER EV. This prompted GM to initiate a thorough product investigation.

Working closely with the supplier, GM discovered that the assembly process might not have been consistently adhered to, leading to possible out-of-sequence torquing of seat frame assembly bolts. This irregularity could result in the seat belt buckle attachment bolt not being tightened to the required specifications. After reviewing the supplier’s manufacturing records, GM identified seat frame assemblies that deviated from the intended assembly order.

Upon inspecting 754 suspect seats, GM and the supplier found two seats with improperly torqued attachment bolts. Fortunately, as of now, GM is not aware of any accidents or injuries related to this condition.

The Importance of Seat Belt Safety

The seat belt is a fundamental safety device in any vehicle, designed to protect occupants in the event of a collision or sudden stop. A properly functioning seat belt system can significantly reduce the risk of serious injury or death during an accident. It’s a vital line of defence, ensuring that passengers are securely restrained and minimizing their movement during a crash.

The Recall and Corrective Measures

In November, GM’s Safety and Field Action Decision Authority decided to conduct a safety recall. Vehicle owners will be notified and advised to return to their dealers for inspection. The specific focus will be on tightening the left and right front seat belt buckle attachment bolts.

Owners of affected vehicles may notice a rattle near the seat belt buckle, signalling the potential issue. It is crucial for owners to heed this warning and take prompt action.

GM has designated the recall number as N232419280, and it is also recognized under the National Highway Traffic Safety Administration (NHTSA) campaign number 23V-786.

This recall by GM underscores the importance of stringent quality control and responsive safety measures in the automotive industry. The seat belt, a simple yet vital safety component, must meet the highest standards of reliability. GM’s action in addressing this issue serves as a reminder of the ongoing need for vigilance and regular vehicle maintenance to ensure the safety of all road users.