Ten-speed control valve — rear wheels can lock upmajor
Recall 26V085, opened in February 2026, covers 2022 Suburbans with the ten-speed automatic and Electronic Transmission Range Select whose transmission control valve may fail and lock up the rear wheels. Dealers install new transmission control module software free. The same underlying wear is covered on the repair side by GM's Special Coverage for the control valve, which runs fifteen years or 150,000 miles and pays for a new valve body — the symptoms it lists are harsh shifting, a service-engine-soon message, reduced engine performance and code P0747. This is a recent campaign, so a truck that has sat unsold may well be outstanding.
Sources: NHTSA complaint database, 2022 Chevrolet Suburban · NHTSA recall database and manufacturer communications (6.2L engine Special Coverage and main-bearing-bolt Customer Satisfaction Program; transmission control valve Special Coverage; semiconductor feature retrofit programmes)
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Transmission control module software under recall 26V085
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Control valve body under GM Special Coverage (15yr/150k)