Third and Fourth Gears Only

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Checks	Causes
2-3 Shift Solenoid Valve(305)	Stuck ON Solenoid is plugged Electrical malfunction
1-2 and 2-3 Shift Valves	Both are stuck in an upshifted position