give me some more info and i'll try to give you a diagram, what year truck? what engine/trans came in it? what engine trans did you put in it? are you using the original wiring harness/computer that came in the truck?

 

oh, and make sure you do a write entire when you disable the vats

 

What he said!

 

03 1500 5.3/60e

It now has an 80e and a 6.0/408.

 

I did do a full write on the disable VATS tune.

 

Any codes stored in the PCM? Do you have another PCM you can try instead?

 

I just remembered the Vats in my buddies Truck cut the fuel and not spark.

 

ok, did some quick checking, coils 1/3/5/7 get power from INJ 1 fuse, coils 2/4/6/8 get power from INJ 2 fuse, pin D on all coil connectors is ign. power (pink wire), pin A on all coils is ground (black wire). check the coil grounds for resistance and check the fuses. the coil ground goes on the driver side of the engine on the same bolt as the negative battery cable.

 

heres the diagram for the grounds on the rear of the engine

 

Hey Nathan,

Have you flashed in the 80E segment and wired the second VSS connector to the PCM yet?

If so, are you sure you hit the right post for the connector?