Chevrolet transmission service is one of the most commonly deferred maintenance items, and one of the most consequential to skip. Automatic transmission fluid degrades over time and with heat exposure, affecting friction clutch protection and internal seal condition. We service the full range of Chevrolet transmissions at Umansky Chevrolet.
The 8-speed and 10-speed automatics in Silverado 1500 typically need transmission fluid service every 45,000 miles under normal driving. Towing, hauling, or Milwaukee winter driving shortens this to 20,000 to 30,000 miles under severe-duty conditions.
The Allison 10-speed in the 2026 Silverado 2500HD and 3500HD is a commercial-grade transmission requiring Dexron ULV fluid at 45,000-mile intervals for normal use. Milwaukee contractors and businesses running HD trucks for plowing, towing, or hauling should follow the severe-duty schedule, which shortens that interval to every 20,000 to 30,000 miles.
The Equinox and Trax CVT was initially marketed as a lifetime fill. Field experience has shown that CVT fluid degrades and causes noise and slip in higher-mileage examples. We recommend CVT fluid service at 60,000 to 80,000 miles for Equinox owners planning long-term ownership.
Schedule today or call 414-797-1288.
1500 W Silver Spring Drive, Glendale, WI 53209.
