Category Archives: Cadillac

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

GM Wheel Lock-Up From Transmission Control Valve Defect

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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.

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

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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.

Cadillac Lyriq Defective Brake Performance

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A potential safety issue has been identified in certain 2023-2024 Cadillac Lyriq all-wheel-drive vehicles. This defect could affect the vehicle’s braking performance, posing a risk to drivers and passengers.

The investigation into this issue began in May 2024, when General Motors (GM) received reports of two minor accidents allegedly caused by a sudden loss of braking. Both incidents were suspected to be linked to a software problem within the vehicles’ Anti-lock Braking System (ABS). In addition to these accidents, GM was also alerted to a separate field complaint that, while not resulting in an accident, seemed potentially related to the same problem.

To get to the bottom of the issue, GM’s investigation team gathered and analyzed field data from various sources. Despite the initial reports, they found no additional cases that could be connected to this defect. However, through careful analysis, they determined that the problem could indeed occur, but only in extremely rare situations. Specifically, the issue arises when a false ABS event occurs on a dry road at speeds under 25 mph. During this event, if a particular series of wheel movements takes place, the ABS system might continue to release brake pressure in the vehicle’s service brake system, even when it shouldn’t.

Fortunately, GM has confirmed that no injuries or fatalities have been associated with this condition. However, given the potential risk, GM’s Safety Field Action Decision Authority (SFADA) decided in August 2024 to issue a safety recall for the affected vehicles.

The defect report explains that under certain rare braking conditions on dry surfaces at speeds below 25 mph, the ABS may become overly sensitive. If the ABS falsely activates and a specific sequence of wheel movements occurs, the system might continue to release brake pressure, which can significantly reduce the effectiveness of the service brakes. This could lead to a reduction in stopping performance or even cause the brakes to become inoperative, thereby increasing the risk of a crash.

To address this issue, GM has made an update to the electronic brake control module software. This update can be installed either through an over-the-air (OTA) update or by visiting a GM dealership. If you own one of the affected vehicles, GM urges you to take action as soon as possible. The recall number for this issue is N242453471, and the National Highway Traffic Safety Administration (NHTSA) campaign number is 24V-598.

2024 Cadillac XT5 Air Bag Could Tear

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General Motors (GM) has announced a safety recall affecting a small number of its 2024 Cadillac XT5 vehicles. This recall addresses a potential defect with the driver front airbag. This defect may pose a risk to vehicle safety.

The issue was identified when GM’s airbag module supplier observed a tear in the airbag cushion during a routine lot-acceptance test. This incident, which occurred in February 2024, prompted a thorough investigation by GM. The supplier was able to isolate the affected batch and performed additional tests on these airbags across various temperature settings to assess their reliability and safety.

The tests revealed that the airbag cushions could tear during deployment due to a recent design change in the airbag modules. Following these findings, GM’s Safety Field Action Decision Authority (SFADA) made the decision to issue a recall for all vehicles equipped with airbag modules from the affected production lot, manufactured the day before the problematic batch.

It is important for consumers to understand that a tear in the airbag cushion during deployment can significantly impair the airbag’s performance in the event of a crash, thereby increasing the risk of injury to the occupants.

To address this safety concern, GM is taking proactive steps. The company will replace the driver’s front airbag module at no cost to vehicle owners. GM plans to begin notifying affected Cadillac XT5 owners through formal letters, which are scheduled to be sent out on June 17, 2024. The recall has been officially recorded under GM’s number N232439241 and the National Highway Traffic Safety Administration (NHTSA) campaign number 24V-311. GM has confirmed that there have been no field incidents or injuries reported in relation to this defect.

GM Suspension Bolts Could Fracture

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When it comes to vehicle safety, every component plays a crucial role in ensuring a smooth and secure ride. Recently, General Motors (GM) discovered a potential issue with improperly heat-treated suspension bolts in select Cadillac, Chevrolet, and GMC vehicles. This problem, if left unaddressed, could lead to serious safety concerns, including misaligned rear wheels and an increased risk of accidents.

In August 2023, a plant quality manager at GM’s Arlington, TX assembly plant uncovered a concerning issue. They identified that as many as 223 vehicles may have received improperly heat-treated bolts during the manufacturing process. Unfortunately, these vehicles were not contained at the plant, which raised alarm bells. Of the affected vehicles, 189 were located in the United States.

In response to this discovery, GM initiated a comprehensive investigation into the issue. Extensive testing and analysis were conducted to determine the potential consequences of these improperly heat-treated bolts. What they found was alarming: in the event of a control arm separation, there was a distinct possibility of rear wheel misalignment that could adversely affect the vehicle’s handling.

It is worth noting that, up to this point, GM had not received any reports of field incidents related to this condition. Recognizing the potential risks associated with the improperly heat-treated suspension bolts, GM’s Safety Field Action Decision Authority (SFADA) made a decision in September to conduct a safety recall to address the issue.

The vehicles affected by this recall include the following 2023 models:

  • Cadillac Escalade
  • Cadillac Escalade ESV
  • Chevrolet Suburban
  • Chevrolet Tahoe
  • GMC Yukon
  • GMC Yukon XL

If you own one of the aforementioned vehicles and receive a recall notice, it is crucial to act promptly. GM will ask you to return to your authorized dealer to have both rear suspension outer control arm bolts replaced. This proactive step is vital to ensure your safety and the proper functioning of your vehicle. To facilitate this process, GM has assigned a unique recall number for this issue, N232415910, and the National Highway Traffic Safety Administration (NHTSA) has assigned the campaign number 23V-642.

Your Cadillac CTS Could Be A Lemon

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In most cases, the Cadillac CTS is a reliable vehicle, but over the years there has been a pattern of problems that owners have been dealing with. Below are some common problems affecting GMs’ Cadillac CTS vehicles:

Cadillac CTS Dash Cluster Problems

In February 2022, a class-action lawsuit was filed against General Motors over issues with its Cadillac User Experience (CUE) system. This lawsuit was originally filed against GM in the U.S. District for Southern California back in 2019 by owners of Cadillac vehicles equipped with its CUE infotainment system. Plaintiffs alleged cars equipped with Cadillac CUE have touchscreens that are prone to delaminating and cracking, making them impossible to use.

Other Cadillac CTS Dash Cluster Problems Include:

  • Dash Cluster Is Completely Dead
  • Dashboard / Speedometer Lights Continually Blinking
  • Gauges Become “Stuck”
  • “Starting Disabled Remove Key” Warnings

Cadillac CTS Rear Differential Problems

Over the years, the Cadillac CTS model has received many complaints about differential problems. They have recently been recalled for roll pins in the rear-axle differential that could fatigue and crack. If these pins break while the vehicle is driven, it could cause the rear to lock up, creating a dangerous driving situation. Other differential problems include a rear axle pinion seal that could experience a fluid leak. If the fluid leaks low enough, a lack of lubrication could lead to increased differential noise and eventual failure.

Symptoms Of A Bad Rear CTS Differential

  • Vibrations that increase in intensity as you speed up.
  • Grinding Gears
  • Whining Noises
  • Metal Shavings In Differential Fluid

Cadillac CTS Check Engine Light Flashes

When your Cadillac CTS “Check Engine Light” goes on, you don’t immediately stop your vehicle and turn off the engine, unless you are experiencing engine performance issues such as poor acceleration or rough idling. The engine light warning could be a minor issue or it could mean something more serious. For most Cadillac CTS owners, it means a trip to the car dealership to investigate the issue and get the light turned off.

Common Cadillac CTS Check Engine Light Problems include:

  • Faulty Steering Wheel Position Sensor
  • Loose Or Damaged Gas Cap
  • Faulty Mass Air Flow (MAF) Sensor
  • Oxygen Sensor Failure
  • Catalytic Converter Failure
  • EVAP (Evaporated Emission Control System) Leak
  • EGR Exhaust Gas Re-circulation Valve Failure
  • Dirty Spark Plugs Or Damaged Spark Plug Wires
  • Vacuum Leak

If your vehicle is experiencing repeated problems it could be a Lemon. Know your Lemon Law Rights. If you have any questions about your rights and the California Lemon Law, please call our office at 1-888-395-3666 and get some great Lemon Law advice!

Our firm has 30 years of experience in dealing with nearly every kind of manufacturer of motor vehicles and have represented thousands of clients throughout the state of California. When we submit a demand on your behalf, the manufacturer is more likely to respect the legitimacy of your claim and our long experience in handling such matters.

Cadillac, Chevy & GMC Seat Belt Buckle Assembled With Improper Rivets

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General Motors (GM) will be contacting the owners of certain 2021-2022 Cadillac, Chevrolet, and GMC SUVs equipped with third-row seating. These vehicles may have been manufactured with an improperly formed mounting bracket rivet that may not restrain an occupant during an accident.

The vehicles affected by this problem include:

2021-2022 Cadillac Escalade
2021-2022 Cadillac Escalade ESV
2021-2022 Chevrolet Suburban
2021-2022 Chevrolet Tahoe
2021-2022 GMC Yukon
2021-2022 GMC Yukon XL

In May 2022, a GM dealership received a customer complaint about the separation of the third row seat belt assemblies in their 2021 Chevrolet Suburban. The problem was submitted to GM’s Speak Up For Safety program and a formal investigation was opened. During this investigation, another seven additional field reports were found that could be related to this condition. Further investigation into the problem determined that operators at the seat belt buckle assembly supplier’s manufacturing plant may have not properly followed manufacturing processes and as a result, may have missed the rivet forming operation. In July, GM’s investigator met with the seat belt buckle assembly supplier to determine the scope of potentially affected parts. On August 4, 2022, GM’s Safety Field Action Decision Authority (SFADA) decided to conduct a safety recall.

According to the defect report, the rivet that retains the buckle to the mounting bracket in the left and/or right side third-row seat belt buckle assembly may not have been properly formed during the manufacturing process. If the assembly is not properly riveted, it will not restrain occupants during an accident and could result in increased injuries.

Owners receiving recall notices will be asked to return to their GM dealer to have the rivet head formation on both the left and right side third-row seat belt buckle assemblies inspected and replace seat belt buckle assemblies, as necessary. GM’s number for this recall is N222372380 and the NHTSA campaign number is 22V-617.

Cadillac, Chevrolet & GMC Vehicles Investigated For Airbag Safety Problem

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Automotive Defect Investigation
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) have opened a Preliminary Evaluation (PE21-010) to investigate complaints of malfunctions with the driver frontal air bags in certain Cadillac, Chevrolet and GMC vehicles.

The ODI has received fifteen consumer complaints about certain vehicles experiencing an airbag warning light illumination and/or a failure of the airbag to deploy during an accident with significant frontal damage. Nine of the consumer complaints say the air bag malfunction indicator lamp (MIL) was illuminated and six of the incidents had significant frontal damage with failure to deploy the airbags.

A TSB, issued in March 2021, addresses air bag MIL illumination accompanied by diagnostic trouble codes B0001-1B or B0012-0D. It also reports rust particles in the connection terminal interface of the driver airbag inflator as the cause of the airbag MIL illumination. Illumination of the airbag MIL under these circumstances may result in a non-deployment of the driver’s airbag during a frontal collision and increased risk of injury to the driver.

The vehicles under investigation include:

2020-2021 Cadillac CT4
2020-2021 Cadillac CT5
2020-2021 Cadillac Escalade
2020-2021 Cadillac Escalade ESV
2020-2021 Cadillac XT5
2020-2021 Chevrolet Silverado 1500
2020-2021 Chevrolet Silverado 2500
2020-2021 Chevrolet Silverado 3500
2020 Chevrolet Silverado 4500HD
2020 Chevrolet Silverado 5500HD
2020 Chevrolet Silverado 6500HD
2020-2021 Chevrolet Suburban
2021 Chevrolet Suburban 1500
2020-2021 Chevrolet Tahoe
2020-2021 GMC Sierra 1500
2020-2021 GMC Sierra 2500
2020-2021 GMC Sierra 3500
2020 GMC Sierra Denali
2020-2021 GMC Yukon
2020-2021 GMC Yukon XL

ODI have opened this preliminary investigation to determine the scope and severity of the potential problem and to fully assess the potential safety-related issues. If the investigation results in a recall, an estimated 749,312 vehicles could be affected.