In a motor manual. You can purchase one at most auto parts stores.
for the ECM, sorry i left that part out
www.installdr.comthey have wiring harness diagrams for all makes
73 chevy c-10 350 v8 need fuse box wiring harness color coded diagram
Go to autozone.com. They have wiring harness diagrams for free download for most vehicles. If found all wiring diagrams for my 88 Silverado.
Purchase a service repair manual for the vehicle.
All data has a diy. Site. Alldatadiy.com.
Join www.trailvoy.com Posted in the resources section
you need the proper wiring harness to change the stereo in a cobalt or the security features will kick in once you have the proper harness you just have to match wires
There's only 7 wires (if I remember correctly). Is your wiring harness gone, damaged, or just disconnected? I don't have a written diagram but I have a '67 Chevy van that I had to remake the harness due to a fire. I can tell you what wire goes where if you tell me what you need.Mikechevyratvan@hotmail.com
You can get a 2001 Chevy Express wiring diagram at your local library. Most libraries will have the Chevy service manual with the wiring diagram.
Buy the repairing book of Haynes.. it has everything in..
autozone.com ,,,,,,,click "Repair Info", then click "Repair Manules".