Firing order for 1999 chevy truck diagram - 1999 Chevrolet Silverado 1500

firing order, 1-8-4-3-6--7-2

1-6-5-4-3-2



Thanks for using FixYa.

Kelly

the firing order is 1-8-4-3-6-5-7-2
cylinders are numbered as follows: drivers side front to rear 1-3-5-7 passenger side front to rear 2-4-6-8

I apologize for the late response...Due to the bad economic situation this site has had a substantial (+50%) increase in the number of questions being asked in the last four months.
I assume you have a 4.3L and not the 2.2L?

For the 4.3L:
Firing Order:
1-6-5-4-3-2

Cylinders:
6-----------5
4-----------3
2-----------1
(front of vehicle)

Distributor:
coil wire-->
-----6------->............<--------5-------
-----4------->............<--------1-------
-----2------->............<--------3-------
............(front of vehicle)

Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

the firing order is 1342 one being the first cylinder to the front by the belts

I believe it firing order is 1-4-2-3 (where cyclinder #1 is the closest to the fire wall) and your distributer has the plug wires running almost vertically.

1st cylinder = the very bottom
4th cylinder = second from the bottom
2nd cylinder = second from the top
3rd cylinder = the top connection on the distributer.

I hope this helps and good luck