Try disconnecting your battery for about a few minutes,to allow the computer to reboot itself,then try it again.it is a non cost procedure,and it just might work.
The engine oil should be changed every 3000-5000 miles
No less then 13.8 and no more then 14.2 Volts with engine running.
A Chevy Cheyenne and Silverado are the same its just that they changed the name in Mexico from Silverado to Cheyenne
The board it'self might but the mounting brackets won't.
Yes
No, Chevy changed the wiring harness in 2003. and the way it is mounted, it can be made to work though.
I have a 1999 chevy Silverado how to fix my day time running lights
If you are checking Alternator voltage, It should 12.8 volts to 14.3 with engine running. Battery voltage is 12.3---12.8 with engine off.
You must have an engine scanner to do that.
Do it yourself engine transmission flush and filter change on 2005 Chevy silverado 5.3?"
YES, They sure are and will interchange with NO problems. Direct bolt in.
Yes.