GMC Sierra 1500 Transmission by year

YearTransmission
2026single-speed (direct drive) or 8-speed automatic or 10-speed automatic
2025single-speed (direct drive) or 8-speed automatic or 10-speed automatic
20248-speed automatic or 10-speed automatic
20238-speed automatic or 10-speed automatic
20228-speed automatic or 10-speed automatic or 6-speed automatic
20218-speed automatic or 10-speed automatic or 6-speed automatic
20208-speed automatic or 10-speed automatic or 6-speed automatic
20198-speed automatic or 6-speed automatic or 10-speed automatic
20186-speed automatic or 8-speed automatic
20176-speed automatic or 8-speed automatic
20166-speed automatic or 8-speed automatic
20156-speed automatic or 8-speed automatic
20146-speed automatic
20134-speed automatic or 6-speed automatic or CVT (continuously variable)
20124-speed automatic or 6-speed automatic or CVT (continuously variable)
20114-speed automatic or 6-speed automatic or CVT (continuously variable)
20104-speed automatic or 6-speed automatic or CVT (continuously variable)
20094-speed automatic or 6-speed automatic or CVT (continuously variable)
20084-speed automatic or 6-speed automatic
20074-speed automatic or 5-speed manual or 6-speed automatic
20064-speed automatic or 5-speed manual
20054-speed automatic or 5-speed manual
20044-speed automatic or 5-speed manual
20034-speed automatic or 5-speed manual
20024-speed automatic or 5-speed manual
20014-speed automatic or 5-speed manual
20004-speed automatic or 5-speed manual

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).