FREE CHECK ENGINE LIGHT SCANFREE CHECK ENGINE LIGHT SCAN. Check engine lights are a part of your onboard emissions diagnostics system. Don’t ignore the light, we can inspect the problem and save you time and money in the long run! With NAU faculty, staff or student I.D. With coupon. Valid at Flagstaff Big O Tires only. Most Cars. Shop fees of up to 10% of pre-taxed invoice price (where permitted). See store for details.. Expires 1/15/2023. Big O Tires
www.bigotires.com Coupon Code: NAU-INSIDER819 | 
