just dropped the engine, harness, and computer from my 95 lt1 into my 93 lt1 camaro it turns over but fuel pump wont kick on and no spark... is it something to do with the different years are maybe something simple as a ground r something else im forgetting any help would be awesome thanks

 

Sounds like the VATS.

 

i have no service engine light coming on either doesnt that mean no power r ground to the pcm

 

also security light doesnt stay on?

 

nope security light goes out and it cranks fine i got a feeling the 95 harness dont match the 93

 

you are probably missing a pcm power.. check the orange wires for power.

 

orange wire has power?????/