What is the firing order for a 1994 Chevy 2500?

The firing order for a 1994 Chevy 2500 depends entirely on the engine it has. The 2500 came with several different engine options that year. You need to specify the engine type (e.g., 4.3L V6, 5.7L V8, 6.5L Diesel, etc.) to get the correct firing order.