Need diagram of rear drum brakes 1991 Chevy Silverado?
autozone.com is an excellent resource for finding repair guides, diagrams and trouble shooting. It would be my first recomendation. They have an impressive library of online repair guides which seem to be copied straight from chilton's manuals.
you shouldn't need a diagram...the starter is a cylinder shaped object that is bolted to the motor...it has 3 bolts holding it to the motor...one plug that runs from the starter(very small plug)...you are looking for a small electric motor that mounts to the engine...you can't miss it with all that space you have in that old chevy...small electric motor with one wire and three bolts the bolt pattern is usually triangular