All coupons must be presented at time of write up. Ask your service consultant for details. Synthetic oils extra. Valid on most GM cars & light duty trucks.Prices do not include taxes, disposal fees, shop supplies, & core value/misc. other. Dealer reserves the right to change specials without notice. Custom wheels extra. These coupons may not be used with any other service discounts or specials. Expires December 31st, 2009.