The price to have your vehicle towed MAY BE enough to GET it diagnosed and repaired. OUR diagnostic service call is $40 within OUR service area. . . They include (1/2 HR) of diagnostics. We travel ALL over central Texas. In which. Service calls OUT of area DO NOT include ANY diagnostics. OUT of area service calls are for repair services only! we DO more for OUR clients than diagnostics. If a vehicle requires less than 2 hours labor. We offer OUR clients a competitive labor price to repair the vehicle onsite. NO need for a TOW bill in most situations!.