Check Out Our Special Offers in Liberty Lake Click on coupon to print or present coupon on your mobile device. Give $15, Get $30! Donate up to $15 to UGM, and we will give you a discount of double your donation, up to a $30 discount on your service. Expires Dec 31, 2019 Excludes oil changes. Not valid with any other offer. Present coupon at vehicle check-in. Offer only valid at Liberty Lake location. 23819 E. Appleway Ave., Liberty Lake, WA 99019