2005 GMC ENVOY XL 64,900 MILES. SPEEDOMETER ERRATIC OPERATION. SINCE FIRST INCIDENT, SYMPTOMS UNDER VARYING DRIVING CONDITIONS ARE; SPEEDOMETER ERRONEOUSLY INDICATES TOO LOW A SPEED, SPEEDOMETER INDICATES TOO HIGH A SPEED, SPEEDOMETER INDICATION STICKS AT A FIXED SPEED WITH CHANGING VEHICLE SPEED.
2006
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
TL* THE CONTACT OWNS A 2006 GMC ENVOY. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY ADVISED THE CONTACT THAT THE ENGINE WAS RUNNING LEAN AND THEY WERE UNABLE TO MAKE REPAIRS UNTIL THE COMPONENT HAD ACTUALLY FAILED. THE MANUFACTURER WAS LATER CONTACTED AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 64,000. UPDATED 05/08/12*LJ THE CONSUMER STATED THE VEHICLE WAS REPAIRED. THE INTAKE MANIFOLD NEEDED TO BE TIGHTENED. UPDATED 05/14/12