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.
I have a repair manual for Luminas, 1990 - 1995 if I'm not mistaken. I keep it in the car, because I have a 1990 Lumina Euro. I can make you a copy of the wiring diagram and possibly email it to you or if it's too big for that, I could mail it to you via USPS. Dundee
any chevy workshop will have wiring diagram and will usually photocopy it for you try Autozones website
You can find the wiring diagrams for a Chevy Celebrity in either a factory service manual or either a Chilton or Haynes manual.
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what make a 1990 Chevy. Lumina Car cut off when make a complete stop.
how can i change the turn singal on a 1990 Chevy lumina
need a wiring diagram for a 1990 ls 400 need a wiring diagram for a 1990 ls 400