No First or Second Gear/No Third or Fourth Gear

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

Checks	Causes
2-3 Shift Solenoid Valve (367B)	Sediment is in the valves Electrical connection is faulty Damaged seal