got a saab 93 service light on how do i knock it of

You cannot. It has to be reset with tech 2. Have the car serviced and they will reset the light,

No, you can get it to shut off despite the previous answer given.

The most common cause is a loose gas cap. You are suppose to put it on and turn 3 clicks. Try 4 clicks. Then keep driving. After you drive for about 3-4 days and/or about 15 start ups, the check engine light will go off if the gas cap was the problem.

If your car seems to drive normally and you are not under warranty, l would try that first.

l had the same problem due to a bad gas cap..i bought a $25 code reader from the auto store..it lets me reset the codes..depending on the year (mine is a 2000) it might not reset itself