Tl* the contact owns a 2003 gmc sonoma. the contact stated while he drove 73 mph the vehicle stalled without warning. the contact was able to coast onto the emergency lane. the local mechanic performed a diagnostic test and was unable to locate a failure code. the vehicle was taken to a second dealership for additional inspection that advised that the spark plug and the fuel cap needed to be replaced. the spark plug and fuel cap was replaced. the manufacturer was not made aware of the failure. the failure and current mileage was 92,984. updated 07/28/14 ma updated 07/29/14