General Motors Issued Bulletin on Chevy Equinox EV Brakes
The service bulletin addresses reports of rear brake noise occurring when the vehicle operates in reverse.
Updated on Sept. 25, 2026 in Electric Vehicles
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General Motors issued service bulletin PIC6656A in 2026 to address rear brake noise in 2024 through 2027 Chevy Equinox EV models. The noise typically emerges when the vehicle is in reverse, particularly in humid or cold weather conditions.
Why it matters
The document helps service technicians categorize and track reports of rear brake noise affecting the Equinox EV and certain Cadillac Optiq units. While not a safety recall, the bulletin highlights an identified mechanical condition that remains under investigation.
The bulletin covers the 2024 through 2027 Chevy Equinox EV models, which feature a starting price point of $35,000 and an upwards range of 319 miles. The condition is noted to occur primarily in cold or humid environmental conditions.
The players
General Motors
General Motors is a multinational automotive manufacturer based in Detroit that produces vehicles under brands including Chevrolet and Cadillac.
Chevy Equinox EV
The Chevy Equinox EV is an all-electric compact SUV manufactured at the Ramos Arizpe plant in Mexico.
Cadillac Optiq
The Cadillac Optiq is an electric luxury crossover SUV that shares components and platform technology with other General Motors electric models.
The details
The noise originates from the rear brake pads, though engineers have not yet pinpointed the precise mechanical cause. Service bulletin PIC6656A serves as a guide for dealer service departments to log the condition while investigations continue.
Timeline
2024 marked the launch year for the Chevy Equinox EV model.
July 24, 2026, was the date the original service bulletin was created.
August 17, 2026, saw the service bulletin model information revised.
Roadmap
This bulletin reflects the ongoing diagnostic refinements necessary for new vehicles built on the GM Ultium platform. Such documents are common as automakers optimize performance for new electric architectures against rival manufacturers.
Owners experiencing rear brake noise should consult with their local dealer to have the condition logged according to the service bulletin. The bulletin does not mandate a vehicle recall or immediate service appointment, as the issue is currently classified as a service inquiry.
The takeaway
Drivers should note that service bulletins are informational tools for technicians rather than indicators of mandatory safety recalls. Owners concerned about unusual vehicle noises are encouraged to document the environmental conditions present when the sound occurs.
Further reading
For more information on the current landscape of the market, explore Electric Vehicles.
Source note: This article includes information reported by GM Authority.
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