Owner Checks and Services for Chevrolet Express (CNG) 2005

This information is supplemental to the gasoline service manual information. Refer to the gasoline service manual for additional information.

Listed below is a check that should be performed at EACH fuel fill to help ensure the safety, dependability, and emission performance of the vehicle.

Important: Always perform this check prior to each fuel fill.

Inspect the condition of the fill valve O-ring. Replace the O-ring if it is damaged or missing.