GM and Allison Transmission will officially end their heavy-duty truck partnership in 2026, concluding a collaboration that began with the Duramax diesel era in 2001. By June 29, 2026, GM must remove ...
Standard equipment in the F-car and a slew of other V-8-powered GM vehicles, the Hydramatic 4L60-E four-speed automatic transmission is a capable performer-to a point. With a maximum engine torque ...
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