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September 5, 2025 Service campaign

We identified an issue within SPS that prevented the correct software to be loaded to these vehicles

Chevrolet technical service bulletin N252510321-01 for 2021 Chevrolet Tahoe, 2021 Chevrolet Suburban and 2021 GMC Yukon and others.

Bulletin number
N252510321-01 (N252510321-01)
Component
Unknown or other
Summary
We identified an issue within SPS that prevented the correct software to be loaded to these vehicles. As a result, we have re-opened these VINs. Please perform the ECM update again which will allow the remedy software to be installed. Then, submit a new claim with a new warranty claim code. If the claim has not been submitted yet, please perform the ECM update again prior to submitting the claim. Thank You.

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