Liberty Smog Check is STAR Smog Check & Test Only Center in Cathedral City, CA 92234.We offer DMV Smog Check, Smog Certification, smog check coupon, smog test near me, ASE Master Certified Technicians, Diesel smog, smog inspection.We get our smog checks done in 10 minutes or less. Appointments are also available. located at Ramon Road, just west of Date Palm.