Alero L4-144 2.4L DOHC VIN T SFI (2000)
Service Engine Soon Indicator: Service and Repair
Service Vehicle Soon Indicator
If this light is on, it indicates a problem in one of the electronically monitored systems such as Heating and Air Conditioning or Cruise Control.
This light does NOT come on at certain milleage intervals.
There is probably a Body Control Module Code or non-Emission related Powertrain Code set that will aid you in diagnosis.
The only way to get the light to go off is to clear the BCM/PCM code(s).
This light can NOT be reset or shut off any other way.
Codes should be read & repaired before clearing them.