If you mean service engine light, then take off the gas cap and put it back on correctly.
The fuel system is pressurized, if the cap is not on tight the check engine light will come on. At least three clicks.
The tank is not venting properly.
The Malibu might have a problem with the vapor canister. If the canister is clogged up the fuel tank will not vent right and the car will be hard to start.
It is in the gas tank, you will have to remove fuel tank to service the pump.
FUEL WILL BACK UP INTO THE GAS TANK VENT LINE CAUSING THE COMPUTED TO THINK THERE IS A RICH CONDITION AND TURN ON THE SERVICE ENGINE SOON OR EMISSIONS LITE
Yes, get that thing out of there. It's gonna ruin your engine.
you fill gas in it
The tank is not venting properly.
because the gas cap is bad, it will not build pressure in the tank, nothing major, but will cause an annoying light.
gettin the gas in
go check your gas cap and make sure it is on tight. Anytime you get a check engine light on after fueling, this normally means you didn't get the gas cap on. Make sure you click it the required number of times if that is how yours works. Also, if you leave the engine running while filling up you are going to get a service engine soon light on. Disconnect the battery and leave it disconnected for a couple hours to clear the computer, then hook the battery back up and the service engine light will be off. If it comes back on take it into Auto Zone, they will read the trouble code for free and tell you what triggered it.
Filler neck to the gas tank
Iodine in a gas tank will run the engine. It will cause rust, and will corrode the engine to the point that the engine will seize.
The Malibu might have a problem with the vapor canister. If the canister is clogged up the fuel tank will not vent right and the car will be hard to start.
On a gas engine you have to remove the fuel tank and, the pump from the tank. The filter is ust a screen on the bottom of the pump, Dodge doesn't have a service interval for the gas engine. On the diesel engine you unscrew the filter housing on the driver side of the engine
Fuel system cleaner should be added to your tank before filling up with gas.
Sometimes there is water mixed in with the gas. This will certainly create a problem where there was none before. Water in the tank can be very damaging to an engine. There are additives that will help. And afterward try to avoid filling up at that particular gas station.
Gas will bubble back when filling the tank if the gas is going in too fast. In most filler tubes for newer vehicles, there is a mechanism that prevents siphoning. If the gas gets trapped in this mechanism, it cannot handle the volume and it might spit some of it back.