The firing order for a 1994 Chevy G20 van depends entirely on the engine it has. The G20 came with several different engine options (e.g., 4.3L V6, 5.0L V8, 5.7L V8, etc.). You
must know the engine displacement (e.g., 4.3L, 5.7L) to determine the correct firing order.
Once you know the engine size, you can find the firing order in your owner's manual or by searching online (e.g., "1994 Chevy G20 5.7L firing order").
