What causes service engine light on and track off light on

All lights on the dash are usually sensors and switches, so no I don't think it's the ignition switch causing it. Best luck to you

run the fault codes to find which sensor is not correct.

This is a common problem with GM's. The TPS sensor goes bad in the throttle body. Throws out a message to service Stabilitrac. Not SO!!!
The kicker is that the whole throttle body has to be replaced because the TPS sensor is actually part of the throttle body!!! Costs around $250.00 for aftermarket.

The service engine light does not affect the abs.You most likely have a broken wire in your abs system which is affected by suspension movement.A code reader which does abs codes will tell you which wheel circuit is turning on the abs light.When there is no abs available the track will turn off.

You need to go to Autozone to get your check engine light scanned for a code. It doesn't cost anything. Hopefully, your computer has found your problem. They can tell you why your light is on and tell you what the problem is. This will let you know where to start because they are a few things that can cause your engine to loose power.

Is it due for maintenance? Oil change, brakes, etc.? Some cars keep track of mileage and advise when it's time for service.

Take it to a mechanic or Saturn dealer to ID the problem.

DO NOT continue to drive the car as it may cause permanent damage or leave you stranded.

GL,
TD

when your traction control, and abs light is on it means there is a problem in those systems that has caused the pcm to shut them off, whick means you dont have them at all right now. the service engine soon light either means there is a fault somewhere else or you need an oil change. the service engine light is the only light that can be erased. I hope that helps you out!

I have engine light on mine as well. The car is not used daily or even weekly and finally tracked it to a low charge/faulty battery. 

speed sensor on your wheel you have one for each side ,the car does a check usually when you first take off.could be the connector to it also when mine went out got the big three =trac off,abs,and service light.a diagnostic should tell you which one is the problem,hope this helps

I have a car in the shop right now same thing - it is being caused by a misfire. Need a real technition to diagnose the problem (auto zone - advance auto can't diagnose the problem - only read the code)
mine was caused by a failing fuel injector. good luck