I would answer if you provided the year and engine you are talking about. Chevy makes lots of engines. 4, 5, 6, & 8 cylinders. Want to try again and list this information.
the firing order is 123456. it is like this on every Chevy 6 cyl motorMy brother has a 89 S10 Chevrolet Blazer 4x4 with a 6cyl engine in it, and stameped on top of the engine just in front of the air...