Low Stall Speed for Chevrolet Chevrolet C-Series Medium Duty Truck B7 1999

Problem	Action
The engine is not performing efficiently, possibly because of plugged or restricted injectors or high altitude conditions.	Refer to Diesel Fuel Injection.
The converter parts are broken.	Replace or rebuild the converter assembly.
The vehicle stalls at speeds of 50 percent of normal, which implies a freewheeling stator.	Replace or rebuild the converter assembly.