Check the lower rear end of the engine
... what about it?
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My 1989 Chevy Caprice Classic with a 350 CID motor has a 27 gallon tank.
On top of the starter - looks like a juice can
Are you asking about the starter solenoid? If yes it is on the starter. If you are not asking about the starter solenoid what are you asking about?
with tools
5x4.75
Passanger side, lower part of the engine.
The 1989 Chevrolet Blazer 4.3 liter engine starter can be found on the right hand side of the engine. The starter will be near the back of the engine.
At The Battery Junction Block And At The Starter Solenoid
5 x 4.75 inches
Solenoid? Is it not actually on the starter motor?