Siegfrieds Motors Inc. Return to Fresno Area Businesses Directory Siegfrieds Motors Inc. Claim Listing Return to Fresno Area Businesses Directory Description Details Address 6173 N. Blackstone Ave. City Fresno State California ZIP Code 93710 Phone 559-439-3393 Listing Category Auto Repair - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?