What is the firing order 2004 chev 4.3 - 1999 Chevrolet K1500

1-5-3-6-2-4 is the most common firing order for a straight 6 but there are some oddballs out there so double check to be sure. Good luck!

1-5-3-6-2-4 is the most common for a straight 6 but double check to be sure. Good luck!

runs like a chev
not the distributor but the firing order as fords and chev firing orders are different

Firing order is :

Hi!!
Here are the two engine configurations WITH AND WITHOUT HEI SYSTEM, they both have the firing order 1-8-4-3-6-5-7-2 and the distributor ROTATES CLOCKWISE.
NO HEI SYSTEM


HEI SYSTEM


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350 chev firing order is 18436572

For the 2001 Chevrolet Impala
I do not know if you have the 3.4L or 3.8L however I have included both below:

For the 3.4L V6:
Firing Order:
1-2-3-4-5-6
Ignition Connections:
............(back)...........
.'.5..2.'..'.3..6.'..'.4..1.'
............(front)

For the 3.8L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
.....(back).....
'...2...4...6...'
___________
'...1...3...5...'
.....(front)

Ignition Coil Connections:
(back)
o 6
o ---3
o 2
o ---5
o 4
o ---1
(front)