Find the cabin air filter, if your Pontiac Bonneville comes equipped with one. Replacing this filter helps eliminate odors.
It’s located either behind the glove compartment, under the dashboard or in the engine chamber.
Tips & Warnings
Use the “fresh” air setting on your Pontiac Bonneville’s air conditioner or vent as much as possible, rather than the “recirculate” setting.
This helps keep your system drier since condensation won’t form as quickly, thereby eliminating some of the odors.