To be certain, the best way to find it is to:
* Look at the center of your dashboard. Look for buttons or knobs labeled "A/C," "AC," "Climate," or related terms.
* Check your owner's manual. This will show you exactly where the controls are located for your specific year and model.
* Consult online resources. Searching for "[Your Year] Oldsmobile Cutlass Ciera AC controls" on Google Images might show you pictures of the dashboard.
Good luck!