Whitch is #2 cylinder on 5,3 gmc - GMC Cars & Trucks

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

Injector order follows firing order. here is a link:
http://www.wellsve.com/custom_searches/pdf/firing_order/Chevrolet_truck_28.pdf

If It's a V-8, it should be 1-8-4-3-6-5-7-2.

The #1 cylinder will be on the front driver side (left side as looking at it from the driver seat). On the same side of the engine will be #3, #5, and #7 cylinders.

The right side will be (starting from the front) will be #2, #4, #6, and #8 cylinders.

Hope this helps.

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

For the 1988 GMC K2500:
I do not know if you have the 4.3L V6 or the 5.0L, 5.7L or 7.4L V8's however I have included all below:

For the 4.6L V6:
Firing Order:
1-6-5-4-3-2
Cylinders:
......(back)........
'...6...........5...'
'...4...........3...'
'...2...........1...'
.......(front)
Distributor:
......(back)
(+) - screw
..........4
....................3
5
.....................2
....6
.............1
.....................(+) - screw


For ALL V*'s (5.0L, 5.7L and 7.4L)
Firing Order:
1-8-4-3-6-5-7-2
Cylinders:
.......(back)........
'..8..............7..'
'..6..............5..'
'..4..............3..'
'..2..............1..'
........(front)
Distributor Connections:
.....(back)
.....6.....5
3...............7
4...............2
.....8.....1
.....(front)
Rotation:
Clockwise

For the 1989 GMC Suburban I do not know if you have the 5.7L or 7.4L, however both have the same firing order, cylinder layout and distributor layout:

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

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

Distributor Connections:
.....(back)
(+) 6.....5
3...............7
4...............2
.....8.....1 (+)
.....(front)
Rotation:
Clockwise

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

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

Cylinders:
(back of engine)
| 6 |---------| 5 |
| 4 |---------| 3 |
| 2 |---------| 1 |
(front of engine)

Distributor:
...(back)
(+)..4...3
.5...........2
....6...1..(+)-screw
...(front)

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

2001 Ford Expedition 4.6 liter SOHC V-8 VIN "6" / 5.4 liter SOHC V-8 VIN "L"Cylinder # passenger side radiator to firewall 1-2-3-4
Cylinder # driver side radiator to firewall 5-6-7-8

Good luck and hope this helps.

Firing order 1-6-5-4-3-2. cylinder's 2-4-6 on right side
cylinder's 1-3-5 on left side.

THE ONE HEAR THE RADIATOR ( FRONT ONE )