Check Out Our Special Offers in McQueen and Guadalupe Click on coupon to print or present coupon on your mobile device. Save up to $50 on Flush Services! $10 OFF 1 Flush Service, $25 OFF 2 Flush Service and, $50 OFF 3 Flush Service Not valid with any other offer. Present coupon at vehicle check-in. Offer only valid at the McQueen and Guadalupe location. Gilbert, AZ 85233