GM lists prices for CNG vans

General Motors said Tuesday that it will cost $15,910 for customers to outfit full-size Chevrolet Express and GMC Savana vans with compressed natural gas equipment.

The CNG option includes a natural gas capable V8 engine, heavy duty trailering equipment, and a dedicated CNG system.

That means that the vans, which start at $25,980, would have a price of $41,890 with the CNG option.