Hours Of Operations Comcast Service Center California Vallejo Comcast Service Center Hours of Operation and Locations in Vallejo, CA 4.5 - 19 votes 1 Locations in Vallejo www.customer.xfinity.com Comcast Service Center Hours Category: Electronics Comcast Service Center - Vallejo, CA 94589 1788 Tuolumne St(800) 945-2288 View Store Details Explore VallejoView More Apparel CostcoMarshallsRoss Dress for LessDd's DISCOUNTSH & M Sports CostcoTargetBig 5 Sporting GoodsVansBasic Basic Jewelry CostcoMarshallsKohl's OutletAvonCash for Gold Recommend For You Xfinity Store R & R Solutions Studio Xfinity Dm Computers Clear Internet Harmony Computer Solutions Ribbons Express Incorporated Fdm Group Incorporated Ventures Unlimited Incorporated Concerto Networks