Contact the Chevron gas card customer service center at (800) 243-8766. The center's hours are Monday through Friday, 8 a.m. to 1 a.m. Eastern time. The department is open Saturday and Sunday between 9 a.m. and 10 p.m. Eastern time.
Tell a representative your Chevron gas card is lost or stolen. Ask the representative to cancel it immediately and issue you a new card.
Ask the representative to double-check to see if your card has been used since it went missing. Find out if you are responsible for any unauthorized charges if they exist.