I HAVE A 2002 GMC ENVOY WHICH HAS A DESTROYED TRANSMISSION DUE TO THE WELL KNOWN (BUT UNBEKNOWNST TO ME) FAILURE OF THE TRANSMISSION COOLING LINES. THIS IS A CLEAR DESIGN FLAW, AS THE ROUTING IS CLOSE TO THE CATALYST. BESIDES THE OBVIOUS SAFETY CONCERNS OF AN ON THE ROAD TRANSMISSION FAILURE, THE LOCATION MAKES A FIRE LIKELY. THE DESIGN FLAW IS DOCUMENTED IN TSB PT-4722. I BELIEVE THESE VEHICLES SHOULD BE RECALLED. *TR