Probably a bad fuel pump.
Probably missing fuel or spark. If it has spark I'd suspect the fuel pump.
That would be a TBI ( Throttle body injection ) Engine-- Fuel injection, They quit putting CARBURETORS on engines in late 1987.
Fuel pump failure.
In most cases it is due to not changing the fuel filter every 15,000 miles. In some cases it is a bad ground or the connector in the tank at the pump.
Your electric fuel pump could have possibly failed or the timing belt could have broken. Either scenario causes the vehicle to "quit."
I have a 1999 s-10 my fuel gauge quit working I had to replace my fuel pump that fixed my proplem
I believe the '76 was the last Impala to have round headlights. The '77 Caprice had the rectangle shapped ones.
It is not uncommon for GM fuel pumps to quit.
I would suspect fuel pump failure.
in the fuel tank it's part of the fuel pump
Yes, and the main cause of this is a partially clogged fuel filter.
Defective Flasher Relay.