Check your engine light and if that doesn't work go to your dealer.
I have a 1995 Pontiac Sunfire . The "check gages " light comes on when my gas tank is on empty. I dont know if this is a right answer but this is how I know I need to fill up at the gasbar .
It is important to know the causes behind warning lights showing up on a car. The check engine light comes on after a certain speed because there is a problem with fuel, electricity, or oil of the engine after that speed, that is causing issues.
Check your tail lights they are probably out also. Most domestic cars power the dash lights off of the tail light circuit so you will know when the tail light fuse blows. Check the tail light fuse.
Check the wire which supplies energy for tail lights (the junction between the trunk and the car body). If it's broken it will cause the check engine come on.
It is important to know what the warning lights mean when they light up. The ABS light comes on when there is an issue with the Brake system in a car.
Check the brake light switch.
The answer is: Apply hazard warning lights and walk around the car to check that each light is working.
You need to have the system checked for codes. You will then know why the light is coming on.
Did you reset the light? I don't know what gasket you changed, but undoubtedly that was not the problem. The check engine light comes on when there is a problem with the emissions system.
You can buy the check engine computer and the book comes with it. I know, I bought one. When your check engine light comes on, you plug it in and check the engine and it will give you the code and you look in the book for that code and it gives you the answer.
Have you checked all the relays? If so, check the wires for shorts. If you have dash lights its probably a short. The fuse for brake lights often also carry the dash light too in an effort to let you know that you have brake lights out.
Have the system checked for codes, you will then know possible causes.