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Home >> Pontiac >> 2009 >> G8 Base >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 5L40-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Manual Second - First Gear >> Notes

Manual Second - First Gear: Notes

Manual Second - First Gear is commanded by the TCM, when vehicle speed is low enough not to overrev the engine - calibratable in the TCM, in order to achieve maximum engine braking. Changes to the hydraulic and electrical systems are as follows:

Manual Valve:

Manual Second - First Gear is commanded by the TCM only, there is no movement of the manual valve.