i just install a new computer on my truck, and it don't wont to start.
on 2001 Chevrolet Silverado 1500

i getting from the message center, security lite, reduce engine power.

2 answers
Was the computer reflashed before install? some have theft deterrent and a relearn is required before it will start This does not throw a check engine light code could be p1626,p1629, p1630,p1631
You might have to bring it to a chevy dealer and get them to reflash the computer to the truck it happened to me already