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US Safety Agency Investigates 535,000 GMC Sierra Trucks Over Grille Deflector Fault
NHTSA is examining 118 complaints that grille deflectors on 2022–2024 GMC Sierra 1500 trucks can detach and fly off, including 21 cases on vehicles already repaired under an earlier recall.
By Eleanor Ellington · 4 min read
US federal safety regulators have opened an investigation into more than 535,000 GMC Sierra 1500 pickup trucks after receiving complaints that a grille component can detach and fly off while the vehicle is being driven. The National Highway Traffic Safety Administration is reviewing 118 reports concerning the grille deflector on model-year 2022 to 2024 Sierra 1500 trucks, the agency has confirmed.
The component at issue is a grille deflector, a part fitted to the front of the truck that is designed to manage airflow. According to the complaints, the deflector can come loose and separate from the vehicle, turning into a projectile on the road. The defect poses a potential hazard to other motorists and pedestrians, though no injuries have been reported in connection with the complaints.
Of particular concern to investigators is that 21 of the 118 complaints involve vehicles that had already been repaired under an earlier recall, identified as 25V-060. That recall was intended to address the same grille deflector problem, which suggests the remedy may not have been effective in all cases. The persistence of the fault after repair is likely to be a central focus of the investigation.
The probe covers a substantial portion of the Sierra 1500 range, one of General Motors' best-selling full-size pickups. The truck is a mainstay of the company's North American lineup and competes directly with rival models from Ford and Ram. A recall affecting such a large number of vehicles would carry significant logistical and financial implications for the manufacturer, though no recall has been announced at this stage.
NHTSA investigations typically begin with a preliminary evaluation, during which the agency gathers data from the manufacturer and assesses the scope and severity of the alleged defect. Depending on the findings, the inquiry can escalate to a more formal engineering analysis or be closed without further action. The outcome may result in a recall, a service campaign, or no further measures if the evidence does not support a safety defect finding.
For owners of the affected trucks, the investigation does not yet amount to a recall notice. However, the complaints describe a component that can fail suddenly and without warning, and the fact that some vehicles were repaired only to experience the same problem again is likely to heighten scrutiny of the original fix. The agency has not indicated how long the investigation might take.
General Motors has not issued a public statement on the matter. The company is expected to cooperate with the inquiry, as is standard practice when NHTSA opens a defect investigation. The agency's findings will determine whether a new recall is required or whether the existing remedy is deemed sufficient.
The case adds to a growing list of safety investigations involving large pickup trucks in the US market, a segment where customer loyalty is strong and sales volumes are high. For GMC, the Sierra is a key profit driver, and any extended safety campaign could affect both the brand's reputation and its bottom line. Regulators have not commented on the potential cost or the number of vehicles that might ultimately require attention.
Owners who have experienced a detached grille deflector are encouraged to report the issue to NHTSA, as such complaints help the agency determine whether a formal recall is warranted. The investigation remains at an early stage, and no conclusions have been reached about the cause or the appropriate remedy.
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