P0751 BUICK – 1-2 Shift Solenoid Valve Performance – No First or Fourth Gear

P0751 BUICK Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Transmission will not shift gears.

P0751 BUICK Possible Causes

Low transmission fluid level,Dirty transmission fluid,Faulty 1-2 Shift Solenoid valve,1-2 Shift Solenoid valve harness or connectors,1-2 Shift Solenoid valve circuit is open or shorted

P0751 BUICK Description

The 1-2 Shift Solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. The 1-2 SS valve is a normally-open exhaust valve that is used with the 2-3 SS valve, in order to allow four different shifting combinations.