Local junkyards are always the cheapest source. Autozone, NAPA, and Advance Auto Parts are also popular. Check your local Craigslist, and eBay, for hard-to-find parts. AutoPartsWarehouse also sources cheap, generic parts.
Search for 1990 chevrolet truck parts on google and enter a website called lmctruck. Here you can find models and parts for them from 1988 - 1998. So just select your model than the year and another window will appear where you can choose the part that you need.
Probably the best option for you is to check local salvage yards. One close to you should have the parts you need. Otherwise look online somewhere like LMC Trucks.
Auto parts stores . dealershipships. Online websites offer all types of parts. If you want used junk yards are a good placeto start or look in your local newpaper for someone seeling parts or a whole vehicle like yours to use for parts.
