Second/Third Gear Only or First/Fourth Gears Only

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
1-2 Shift Solenoid Valve (367A)	Sediment is in the valves Electrical connection is faulty Damaged seal