General Motors will replace the high-voltage battery a second time in 66 electric vehicles whose first replacement packs were remanufactured with modules that should not have been reused, according to a GM service bulletin.
The affected vehicles span 10 models from Cadillac, Chevrolet and GMC, including the Cadillac Lyriq and Escalade IQ.
“Certain vehicles listed above may have a condition in which remanufactured high voltage battery packs were built using modules that were ineligible for reuse and require a second replacement,” the bulletin states, according to both outlets.
“Dealers will replace the high voltage battery,” it says, according to GM-Trucks. The company has not said how many of the 66 vehicles are Lyriqs or Escalade IQs, or what made the modules ineligible, and has not commented publicly beyond the bulletin.
Not a safety recall
The action is a Customer Satisfaction Program, numbered N262565450 and released on October 26, not a safety recall, GM Authority reported. The bulletin does not describe a specific battery failure mode or any effect on how the vehicles perform, the outlet said.
Sixty-six is GM’s count for all involved vehicles in the US across the 10 models, according to GM-Trucks.
Only vehicles that already received a remanufactured replacement pack are covered. EVs still running on their original factory batteries are not part of the program, the outlet said.
Repairs are free regardless of mileage, age or ownership through November 30, 2028. GM will notify owners by mail and direct them to an EV-certified dealer.
The new battery may itself be new or remanufactured, depending on battery criteria, vehicle specifications and parts availability.
Ten models, up to 11.3 hours
The program covers the 2024 Cadillac Lyriq, the 2025-2026 Cadillac Escalade IQ, the 2022-2025 GMC Hummer EV Pickup, the 2024-2026 Hummer EV SUV, the 2024-2026 GMC Sierra EV, the 2024-2025 Chevrolet Silverado EV, the 2024-2025 Chevrolet Blazer EV, the 2025 Chevrolet Equinox EV, the 2023 BrightDrop 600 and the 2025 BrightDrop 400, according to GM-Trucks.
All are built on GM’s Ultium battery platform.
The battery swap carries a labor time of 8.9 hours for the Lyriq, or 9.4 hours for versions with Performance AWD, and 10.6 hours for the Escalade IQ, the bulletin shows, according to GM Authority. Those times include preparing the removed battery for shipping and do not reflect total time at the dealer.
Labor times range from 7.2 hours for some Blazer EVs to 11.3 hours for the BrightDrop 400 van, according to GM-Trucks. The Hummer EV is rated at 9.5 hours.
Only authorized EV dealers with GM-trained technicians can do the work. Dealers must check eligibility through GM’s internal warranty system, as a standard service VIN search will not confirm it, GM-Trucks reported, citing the bulletin. VINs for new campaigns can take several days to appear in GM’s online recall lookup.
In August, GM recalled 11 vehicles, including 2026 Escalade IQ and IQL models, 2026 Silverado EV and Sierra EV pickups and a 2022 Hummer EV Pickup, because a battery module component may not be fully secured and could damage the battery, “increasing the risk of a fire,” according to US safety regulators. The remedy was a full battery replacement.
The bulletin does not link the new program to that recall.
Cadillac EV sales
The Lyriq was Cadillac’s first electric vehicle, launched for the 2023 model year. Cadillac sold 28,402 Lyriqs in the US in 2024 and 20,971 in 2025, according to GM sales figures compiled by GM Authority.
Lyriq sales plunged 50.5% to 3,617 in the third quarter of 2026, as US demand for EVs dropped after the $7,500 federal tax credit expired at the end of September 2025. Year-to-date sales were down 32.7% at 11,195.
The Escalade IQ, which reached customers in late 2024, has sold about 13,600 units in the US through September. Sales of the Escalade IQ and the longer IQL fell 29.2% to 1,604 in the third quarter and 20.3% to 4,807 year to date.
Cadillac’s four EVs, which also include the Optiq and Vistiq, accounted for 12,358 of GM’s 25,473 US electric vehicle sales in the third quarter, which fell 61.7% from a year earlier.
GM recalled 29,347 Cadillac Optiq EVs earlier this month over a window pinch-protection flaw.
