I have a 1996 GMC sierra with a 6 cylinder engine. its fuel injected. i need to know the firing order as i think on might have been crossed. the truck spits and sputters when i press the gas pedal. i have changed the fuel filter and am trying to change the plug and wires and want to make sure they are firing in the right order. any help would be apperciated. thank you in advance

4.8L, 5.3L, 6.0L and 8.1L Engines Firing order: 1-8-7-2-6-5-4-3

In-line four-cylinder engine ignition order is: 1-2-4-3 and 1-2-4-2;
In-line type 5 hair hijacking ignition order is: 1-2-4-5-3
In-line 6 cylinder engine ignition order is: 1-5-3-6-2-4 or 6-2-4-1-5-3;
want to know more auto diagnostic tool

The first thing I would check is fuel pressure. This type of fuel injection requires a minimum fuel pressure in order to operate. If fuel pressure is as little as one psi below minimum the vehicle will not start. You can try squirting a couple of shots of carb spray into the air snorkel while somebody cranks the engine over. If the engine starts and then dies you now you fpdeffinetely have a fuel issue. If the engine still won't start check for spark. Let me know what you find. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Posted by original Asker under 2000 GMC New Sierra 1500 for a 1996 Chevy 4.3L V6

For the 1996 Chevy 4.3L V6:

Firing Order:
1-6-5-4-3-2

Cylinders:
........(back).......
|..6..|.......|..5..|
|..4..|.......|..3..|
|..2..|.......|..1..|
......(front)

Distributor Connections:
...........(back)
Coil-> o
6-----> o.......o <-----5
4-----> o.......o <-----1
2-----> o.......o <-----3
...........(front)

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

For the 1996 GMC SIERRA with 5.7L V8:

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
.........(back).........
|...8...|........|...7...|
|...6...|........|...5...|
|...4...|........|...3...|
|...2...|........|...1...|
.........(front)

Distributor Connections:
............(back)
Coil--->o
6------->o........o<-------5
4------->o........o<-------3
2------->o........o<-------7
8------->o........o<-------1
.............(front)

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

There were three different engines for that vehicle in 1996, here are diagrams of the 3.9 liter V-6 engine, and the 5.2 and the 5.9 liter V-8 engines both have the same firing order.

3.9 liter V-6 liter engine;





5.2 liter/5.9 liter engines;

1--6--5--4--3--2

Here you go. Just follow the diagram. Have a great day.

firing order of 8 cyl 1-8- 4-3-6-5-7-2- If you are standing in front of the vehicle looking at the engine.. the cylinder on the front on your right is #1...Drivers side front to rear is 1-3-5-7 Passenger side front to rear is 2-4-6-8 now the cap..#1 on the cap points to #1 cylinder..for example..the 2 towers most forward on the cap are 8 and 1


6 5

3 7


4 2

8 1

rotor rotates counter clockwise good luck


8 1

Firing order is 1-8-4-3-6-5-7-2. #1 usualy points to the #1 cylinder thats front driver side of engine On the cap. Remove the number 1 spark plug and have someone crank a little unitl you hear/feel air. The possition of the rotor is where your number 1 is, go Clockwise to place the wires in the correct order.

Have a good day ahead!