The firing order for a 1992 Chevy half-ton truck depends entirely on the engine it has. Chevy trucks of that year came with several different engine options (V6, small-block V8, and possibly even a big-block V8 in some models).
You must specify the engine size (e.g., 4.3L V6, 5.0L V8, 5.7L V8, etc.) to get the correct firing order. Once you provide the engine displacement, I can look it up for you.
