Service VEHICLE Soon light

2002 Buick Century 105,000 miles
The service vehicle soon light has been coming on about once a week. It only stays on until I shut off the key. Then it won't come back on for a week or so. The maintainance is up on everything: brakes, transmission, belts, hoses, all fluids. The owners manual doesn't say anything about resetting the warnig and it doesn't show up on my CANOBD2 meter. What does this light mean and how do I make it stay off. Thanks, 831johnc

From my experience that light will come on when there is a problem with a wheel sensor but the ABS & TRACTION CONTROL light also came on.
You may have to find a code reader for the abs system.

Thanks irecken, You're right, the abs and the trac lights come on. I'll check out the front abs. 831johnc