Crossed wires on 1995 chevy suburban...5.7 liter, need to know the proper firing order so that I can install the spark plug wires on the proper spark plugs.

Here is the firing order and spark plug wire routing diagram for a 2006 Chevy Impala LT 3.9 V6:
Firing order: 1-2-3-4-5-6
Spark plug wire routing (starting from the driver's side):

• Cylinder 1: connect to the coil tower closest to the driver's side headlight
• Cylinder 3: connect to the coil tower next to cylinder 1
• Cylinder 5: connect to the coil tower next to cylinder 3
• Cylinder 2: connect to the coil tower closest to the passenger side headlight
• Cylinder 4: connect to the coil tower next to cylinder 2
• Cylinder 6: connect to the coil tower next to cylinder 4

Note: Make sure to route the wires properly to avoid cross-firing.

Check the firing order. If it wasn't happening before then that's most likely your culprit. For a 2005 Chevy Suburban the firing order is as follows;
1-8-7-2-6-5-4-3

Another thing to check is resistance in the plugs and wires. Check to make sure they all have the factory specified resistance.

The best way would be to obtain a firing order diagram and go by that. You can probably look at the diagram somewhere online for nothing. Crossed wires are a pain to guess at.

Here is the firing order diagram for that 5 cylinder engine, and the firing order is the same for the 2.3 and the 2.5 liter engines.

Hello, I have attached a figure to help you out. The point with out the black dot is Number one on the distributor. Hope this helps. Please rate.

Here is the diagram you ask for. While it says it is for the 3.0L V6, it is the same for the 4.0L V6 if that's what you have...

Gap is .045
Firing order is 1-8-4-3-6-5-7-2
1-3-5-7 is on the driver's side
2-4-6-8 is on the passengers side

1-2-3-4-5-6 firing order( belt end looking toward trans axle ) first on left (1) (2) on right(3)on left and so on

1991-1994 2.9L and 3.0L Engines Firing Order 1-4-2-5-3-6 1995 And Later 3.0L V-6 With DIS Ignition System Firing Order 1-4-2-5-3-6
4.0L Engines Firing Order: 1-4-2-5-3-6 DIS Ignition System

the fireing order is 1-6-5-4-3-2