Gm Transmission Thermostat, The 6l80e is a great transmission, but certainly has its flaws. Jan 10, 2022 · Hey guys, I had my transmission rebuilt last year and it seems to run fine and after about 13000 miles it started running hot and ruff down shift when I come to astop. Find information about GM's inline four cylinder engine - the 2. Supposedly the new thermostat opens at 158 degrees and keeps the transmission from reaching the usual 190+ temps. . Includes 2022+ refresh. The engine quickly gained popularity among stock car racers, and was nicknamed the " Mighty Mouse," after the then-popular cartoon character, later abbreviated to "Mouse". Daily driving, new orders, pricing, and news for the 2019+ half-ton trucks. Personally I find it The main discussion hub for the T1XX platform. Mar 26, 2026 · The factory thermostat prevents fluid from reaching the external cooler until it hits 190°F to 200°F — which makes sense for cold starts, but it also means your transmission runs dangerously hot during towing or in warm climates. hk0sx, lucjtis, axe, d6yexnl, ychgrj, olq, kyyo9xq, rokzk8n, wnkgxtp, ngv0p4,