Visual inspection, retrieval and reporting on trouble codes are free of charge. Additional diagnostics may be recommended and charges may apply. May not apply to vehicles 1996 and older. One coupon per customer. Not to be combined with other discounts or special offers. Valid at participating centers only. Applies to most cars & light trucks. Some restrictions may apply. Call your local AAMCO location for details. Coupon must be presented at vehicle drop-off.