Ok where does both the fuel line and the vacum return line go to from the gas tank of a 1982 chey el camino

Question edited for a lot more clarity.
Question moved to model category.

Check Fuses 1, 3, and 10. Make sure all your connectors are clean.

The clock is fuse 16.

https://knigaproavto.ru/shemy/en/gmc/caballero/681-1978-1981-chevrolet-el-camino-and-gmc-caballero-fuse-box-diagram.html

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try this

It is in the inlet to the carburetor. It will require a 1 inch and a 5/8 inch wrench.

The Gas Gauge---worn out sending unit in fuel tank

Check the fuel hose going to the pump on the
side of motor for leaks

Also check for a leaking fuel pump gasket, between
pump halves

Nothing seeping under the hood,have to look around
the tank area where hoses leave the fuel,return & evap
system hard lines

Check all Emission Hoses on canister under hood & around
intake

The Fuel Pump is in the gas tank.The Fuel Filter is located near the tank in the back

overhaul your carb

Most likely, your in-tank fuel filter has gotten clogged, or the intake has gotten clogged. See if you can either pull it out, or if that is impossible (I'd hope not!) get a tank repair specialist to do it. But given it's getting closer to the "DIYer" age, it should allow you to do it yourself.

Long time sitting so the carburetor will need to be torn down and rebuilt first. The fuel tank will need to be cleaned as well. Radiator shops do that with a pressure check. Change the fuel filter and a new gas line is recomended as well. Varnish is in the lines as you may know from sitting for ten years. All rubber hoses are dry rotted too although they may look good to the eye. The radiator will need to be pressure check and the heater core too. Coolant sitting in these parts will soak the metallic parts and soften the metals causing build up to plug these cores up from age. You will be better off replacing the radiato and heater core for I know if not drained ten years back they will be no good to use

pull the tank off and check the float on the sender unit

Check the gas tank vent tube, it must be bent or blocked, so it is not allowing air to escape as gas enters the tank, resulting in the pump kicking off, and being unable to put fuel in the el camino.

i have the same problem with mine. I think it might be tha carburetor or that the rpm's might be to low. not sure. but those are my ideas.