NHTSA expands GM engine recall probe to include more model years

Live updates

1. 1h ago

   NHTSA expands GM eBoost brake probe to 12 models including Honda and Acura

   The National Highway Traffic Safety Administration expanded its engineering analysis of GM eBoost brake-by-wire systems to 1.16 million vehicles across 12 nameplates. The probe follows hundreds of reports regarding brake failure and unexpected power assist loss. The investigation now includes the Honda Prologue and Acura ZDX in addition to GM brands. Regulators are moving toward a potential recall decision after the system was linked to at least 22 crashes.

   Why it matters

   The eBoost system was first flagged in the Cadillac Lyriq before investigators found the fault affected other models sharing the same hardware. This probe runs parallel to a separate federal investigation into V-8 engine failures in nearly one million GM pickups and SUVs.

   What is confirmed

   • The NHTSA investigation into GM eBoost brake systems covers 1.16 million vehicles.
   • The probe includes 12 different nameplates.
   • The investigation has been escalated to an engineering analysis.
   • The brake system issues are linked to 22 crashes.
   • The probe includes the Honda Prologue and Acura ZDX.

   Still unconfirmed

   • The investigation is linked to 745 brake incidents and 21 crashes.
   • Federal regulators are one step from ordering a recall on 1.2 million vehicles.

   What to watch next

   • NHTSA final decision on whether to order a formal recall
   • Identification of the specific technical cause of the power assist loss
   • Official response from Honda and Acura regarding the shared GM system
   Sources used for this update (5)

   1. www.cbtnews.com — NHTSA expands GM brake probe to 12 models, two Honda vehicles
   2. autos.yahoo.com — Feds moving closer to a brake recall on 1.2 million GM cars
   3. autos.yahoo.com — 1.1 Million GM Vehicles, 22 Crashes, 0 Recall Yet: GM’s eBoost Brake System Faces Federal Scrutiny
   4. www.nbcchicago.com — Millions of eggs recalled over salmonella concerns. See the brands and where they were sold
   5. www.carscoops.com — US Escalates Probe Into 1.1 Million GM Vehicles Linked To 745 Brake Incidents And 21 Crashes
   confidence 90%
2. 2d ago

   NHTSA escalates GM brake-by-wire probe to engineering analysis

   Federal investigators have upgraded their probe into General Motors eBoost brake-by-wire systems to an engineering analysis. The investigation covers between 1.1 million and 1.16 million electric vehicles following customer reports of unexpected power assist loss. This escalation follows reports that the system is responsible for at least 22 crashes. The probe occurs alongside a separate federal investigation into failures of GM V-8 engines in nearly one million pickups and SUVs.

   Why it matters

   The eBoost system manages braking assistance in GM electric vehicles. A failure in this system can reduce the driver's ability to stop the vehicle quickly. This adds to the regulatory pressure on GM as it manages multiple large-scale safety investigations.

   What is confirmed

   • The NHTSA opened an engineering analysis into GM eBoost brake-by-wire systems.
   • The brake investigation covers between 1.1 million and 1.16 million vehicles.

   Still unconfirmed

   • The eBoost brake-by-wire system is responsible for at least 22 crashes.

   What to watch next

   • NHTSA decision on whether to mandate a formal recall for the eBoost system
   • Release of specific affected GM EV models
   • Updates on the concurrent V-8 engine failure probe
   Sources used for this update (4)

   1. www.autoevolution.com — Over 1.1 Million GM Vehicles Investigated for eBoost Brake-by-Wire System Issues
   2. arstechnica.com — Feds deepen probe into General Motors brake failures
   3. www.whalesbook.com — General Motors Faces Expanded NHTSA Probe on 1.16 Million EVs
   4. www.topspeed.com — GM EVs Are Now Under Federal Investigation For Brake Failures — Here's What Owners Need To Know
   confidence 90%
3. 3d ago

   NHTSA expands engine failure probe to nearly one million GM vehicles

   The National Highway Traffic Safety Administration expanded its investigation into GM V-8 engines after reports of failures continued despite a previous recall remedy. The probe now covers 997,000 pickups and SUVs. Federal regulators are examining why these engines continue to fail, specifically targeting vehicles that already received the official fix. The investigation focuses on the reliability of the remedy and the safety risks posed by sudden engine implosions in nearly one million vehicles.

   Why it matters

   This probe follows an existing recall intended to resolve engine issues in GM V-8s. The persistence of failures after the remedy suggests the original fix was insufficient. If the NHTSA finds the remedy ineffective, GM may be forced to issue a second, more comprehensive recall.

   What is confirmed

   • The NHTSA expanded its probe into GM V-8 trucks and SUVs.
   • The investigation covers 997,000 vehicles.
   • Engines have reportedly failed after receiving a recall remedy.

   What to watch next

   • NHTSA determination on the effectiveness of the previous recall remedy
   • Potential announcement of a new mandatory recall for the expanded vehicle set
   Sources used for this update (5)

   1. Reuters — US highway agency expands probe into GM pickups, SUVs over engine failures
   2. Car and Driver — NHTSA Opens Investigation Into GM V-8s That Won’t Stop Imploding, Despite Receiving Recall Remedy
   3. WSJ — GM Faces Safety Probe Over Engine-Failure Concerns in Nearly One Million Vehicles
   4. Detroit Free Press — NHTSA expands GM engine recall probe to include more model years
   5. Road & Track — NHTSA Expands Probe Into 997,000 GM V-8 Trucks and SUVs After Reported Post-Recall Engine Failures
   confidence 100%