2005 Chevrolet Express 3500 Base 8 Cyl 6.0L
no power to coils, no spark... everything else is fine all fuses and relays are ok,
just replaced the engine with same model, #s everything hooked up fine, went to start, and turns over but no spark. Checked for voltage like said in chiltons manual nothing at connectors. vehical ran before motor was replaced but changed it because of cracked heads... dont Have Obd2 scanner, to check codes.. just a no start condition.. Has good fuel pessure...
Check the fuses in the underhood fuse box, engine2 fuse 21-- 15 amp. That fuse circuit goes hot when you turn on the key. Not only check the fuse, use a voltage tester on the fuse circuit.