NHTSA Complaint #10672769 — 2005 GMC ENVOY

THIS IS A RECURRING PROBLEM WITH NOT JUST MY VEHICLE, BUT AFTER A VERY SIMPLE WEB SEARCH A VAST NUMBER OF THESE GMC ENVOY VEHICLES. WHEN TRAVELING NORMALLY THE SPEEDOMETER DECIDES TO EITHER DROP ITS SPEED BY 20-30 MPH OR RAISE IT EVEN AS HIGH AS 120MPH. WHEN TRAVELING IN THE CITY OR HWY WHERE THE SPEED LIMIT ZONES VARY RATHER FREQUENTLY AND IN HEAVY TRAFFIC, THE DRIVER NATURALLY REACTS TO THE NEEDLE UNAWARE THAT THE SPEEDOMETER IS ACTUALLY FAULTY. I HAVE THEREFORE BRAKED HARD TO REDUCE MY SPEED WHEN IN FACT I WAS GOING THE SPEED LIMIT. THAT CAN RESULT IN AN INSTANT TO A REAR END CRASH BASED ON NORMAL REACTIONS. GM OBVIOUSLY ARE AWARE OF THIS ISSUE AS THERE ARE MULTIPLE ON LINE COMPLAINTS FOR THIS SAME ISSUE AND INDEED THEY ISSUED A RECALL FOR SIMILAR GM TRUCKS. THEY HOWEVER CONTINUE TO IGNORE THE ENVOY PROBLEM AND LEAVE THE OWNERS "LIVE OR DIE" WITH THE PROBLEM. HOW THIS CANNOT BE CONSIDERED A HIGH PRIORITY SAFETY ISSUE IS A MYSTERY TO ME. EVEN 10 MPH VARIATIONS IN HEAVY TRAFFIC MEAN POTENTIAL ACCIDENTS FROM BUMPER HUGGING DRIVERS BEHIND. THIS ISSUE IS MORE COMMON IN THE EXTREME COLD WEATHER AND THUS I AM OF THE OPINION THAT THERE IS A DEFINITE TESTING VALIDATION PROBLEM. *TR