If it is the factory radio, then the pin-outs diagram should be stamped into the metal on the radio it-self.
try www.haynes.com
what is the wiring diagram for an 1988 Chevy celebrity stero
You can find a stereo wiring diagram for your 1990 Chevy Cheyenne 2500 at most Chevrolet dealerships. The stereo wiring diagram will be in Chevrolet service manuals at your local library.
You can find a wiring diagram for your 1994 Chevrolet Astro Van stereo at most Chevrolet dealerships. The stereo wiring diagram can also be found at your local library.
The 2005 Chevrolet trailblazer stereo wiring diagram can be obtained from most Chevrolet dealerships. The stereo wiring diagram can also be found at most auto-parts stores.
www.the12volt.com
If yours is like mine then you will find a wiring diagram on top of the factory radio when you remove it from the dash. Simply match-up the wiring for the new stereo to the coresponding feeds listed on the wiring diagram that's on the factory radio
www.installdr.comthey have wiring harness diagrams for all makes
The Chevrolet Cavalier CD player wiring diagram shows the beginning location of each wire and the ending location of each wire. The diagram is handy when diagnosing problems.
crutchfield
Check "My Contributions" on the left side of the page. Your answer is in there.
A Chevy S 10 wiring diagram, with color codes, can be obtained from most Chevrolet dealerships. The wiring diagram can also be purchased from most auto-parts stores.