General Motors Issued GMC Sierra EV Manual Correction
The automaker released a customer satisfaction program to address inaccurate tire information in 2025 model year manuals.
Updated on Oct. 11, 2026 in Electric Vehicles
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General Motors has initiated a customer satisfaction program for 2025 GMC Sierra EV owners after discovering incorrect data in vehicle manuals. The error pertains specifically to tire specification information printed in the owner documentation.
Why it matters
Providing accurate tire data is essential for ensuring proper maintenance and safety compliance for electric vehicles. This update ensures owners and dealership staff have the correct information regarding tire load ratings and manufacturing identification markings.
Program N262567130 covers 2025 GMC Sierra EV models and remains active until October 31, 2028. The corrections focus on tire sidewall labeling, including load ratings, DOT markings, and TPC specifications.
The players
General Motors
General Motors is a major American automotive corporation that designs, manufactures, and markets vehicles and parts worldwide.
GMC
GMC is a division of General Motors that focuses on trucks, SUVs, and electric vehicles for the North American market.
The details
General Motors is mailing supplemental inserts to affected owners to replace the incorrect pages in their manuals. Dealership technicians are also tasked with updating the manuals for any unsold 2025 GMC Sierra EV units currently held in inventory.
Timeline
October 1, 2026: The customer satisfaction program was officially released.
October 31, 2028: The program coverage period expires.
Roadmap
This correction reflects the high regulatory standards required for modern electric vehicles, where tire specifications are critical for vehicle efficiency and safety. It underscores the ongoing focus by major manufacturers to maintain compliance with federal labeling standards across their expanding EV portfolios.
Owners of the 2025 GMC Sierra EV will receive a mailed supplement that should be inserted directly into their existing owner's manual. There are no mechanical or physical changes required for the vehicle, meaning the repair has no impact on driving performance or daily maintenance costs.
The takeaway
Vehicle owners should review all supplemental inserts provided by manufacturers to ensure their documentation matches the specific equipment on their vehicle. Keeping accurate tire information on hand is a critical part of maintaining the longevity and safety of high-performance electric trucks.
Further reading
For more information on current industry standards, visit the Electric Vehicles section.
Source note: This article includes information reported by GM Authority.
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Should automakers be required to provide physical manual updates for minor tire information errors?
