If the SES light comes on, it is important to have the car diagnosed as soon as possible to determine the cause of the problem. Driving with the SES light on can cause damage to the engine and emission control system.
Here are some possible causes of the SES light coming on:
* Faulty oxygen sensor
* Faulty spark plug or spark plug wire
* Faulty fuel injector
* Faulty ignition coil
* Faulty catalytic converter
* Vacuum leak
* Exhaust leak
* Coolant leak
* Oil leak
If you have a 1996 Pontiac Grand Am and the SES light comes on, it is important to have the car diagnosed as soon as possible to prevent damage to the engine and emission control system.