check the relay and fuses in the underhood on drivers side fuse box. if not the relay it has to be a bad fuel pump or related wiring.
How do you change the fuel pump on a 2003 Chevy Malibu?
the fuel pump is in fuel tank!!
the furl filter on a 2003 malibu, is up in the little space behind the tank .
Behind the fuel line on the right side of the motor.
There can be several things that will cause your 2003 Chevy Malibu to run rough and not shift into fourth here. The probable cause is a lack of fuel. Due to a bad fuel injector.
In the fuel tank. It is part of the fuel module.
Its your fuel pump very common on those cars
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Fuel Leak. Possibly the Fuel Pump. Get it checked immediately.
It could be low on fuel.