2006 GMC Envoy Denali

TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI. THE CONTACT STATED THAT THE VEHICLE FAILED TO START AND ALL THE WARNING INDICATORS ILLUMINATED. THE CONTACT MENTIONED THAT WHEN THE VEHICLE WOULD START, IT WOULD CUT OFF IMMEDIATELY. THE VEHICLE WAS TAKEN TO BETTEN BAKER CHEVROLET BUICK GMC (14120 NORTHLAND DR, BIG RAPIDS, MI 49307 (231) 629-4340) WHERE IT WAS DIAGNOSED THAT AN ELECTRICAL FAILURE WAS FOUND, BUT THE DEALER DID NOT KNOW THE EXACT CAUSE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND REFERRED THE CONTACT TO NHTSA. THE FAILURE MILEAGE WAS APPROXIMATELY 126,000.

MY HUSBAND AND I WERE TRAVELING WHEN THE VEHICLE SHUT OFF WITH NO WARNING AT ALL AND ALL THE DASH BOARD LIGHTS CAME ON. THE VEHICLE WOULD NOT RESTART BUT WOULD TURN. THIS HAPPENED SATURDAY 9/2/17 ON A COUNTRY HIGHWAY OUT IN NOWHERE . WE CALLED A TOW TRUCK. THANK GOD FOR CELLPHONES. ON 11/12/2016 HUB BEARINGS REPLACED. 11/15/16 MODULE AND CONNECTOR REPLACED AND FUEL LEVEL SENSORS AND RING REPLACED. THREE YEARS AGO A/C WENT OUT. REPLACED.

FAILURE OF THE DOD LIFTER, ALSO KNOWN AS THE ACTIVE FUEL MANAGEMENT SYSTEM. WHILE AT SPEED ON THE FREEWAY, THE DOD LIFTER ON CYLINDER #7 FAILED CAUSING A MISFIRE ON THE CYLINDER WHICH CAUSED TEH ENGINE TO SHAKE VIOLENTLY. THIS IS THE 2ND FAILURE OF A DOD LIFTER ON MY TRUCK. IN NOV 2014, A DOD LIFTER ON CYLINDER #6 FAILED, CAUSING A ENGINE MISFIRE AND A VIOLENT SHAKE. THE CAUSE OF THE FAILURE WAS DETERMINED TO BE LACK OF OIL PRESSURIZE THE DOD LIFTER. UPON DECIDING TO REBUILD THE MOTOR RATHER THAN REPLACING THE MOTOR, WE DECIDED TO REPLACE ALL INTERNAL COMPONENTS OF THE MOTOR SIMPLY BECAUSE THE MOTOR WOULD NEED A FULL TEAR DOWN ANYWAY. THE LIFTERS, OIL PRESSURE SOLENOIDS OF THE DOD LIFTERS, ROCKERS, ROCKER ARMS, SPRINGS AND CAMSHAFT WERE ALL REPLACED THINKING THAT WE MIGHT AS WELL REBUILD THE BLOCK WITH NEW COMPONENTS TO SAVE OFF ANY FUTURE ISSUES. AFTER 1 MONTH IN THE GMC SERVICE CENTER, THE VEHICLE WAS BACK ON THE ROAD IN DEC 2014. THIS REPAIR WAS $5,900.00 IN MARCH 2016, YES 14 MONTHS LATER, A 2ND FAILURE OF A DOD LIFTER OCCURRED ON CYLINDER #7. THE VEHICLE EXHIBITED THE SAME ISSUES AS IN NOV 2014. THIS FAILURE OCCURRED ON THE REBUILT MOTOR ON NEW COMPONENTS INSTALLED IN NOV 2014. THIS REPAIR WILL COST $2500 JUST TO REPLACE THE 1 LIFTER. NO OTHER COMPONENTS. THIS LEADS ME TO BELIEVE THAT A THE DOD FAILURE IS MORE COMMON AND IS A DESIGN FLAW OF THE ACTIVE FUEL MANAGEMENT SYSTEM. THIS ISSUE IS MORE THAN A TSB ISSUE, IT SHOULD BE A RECALL.

ENGINE STALLED A FEW SECONDS AFTER STARTING, THEN WOULD NOT CRANK, ONLY CLICKED. I HAD THE CAR TOWED IN FOR SERVICE. TECHNICIAN CHECKED BATTERY. IT WAS FULLY CHARGED AND VEHICLE HAD FULL VOLTAGE. DIAGNOSTICS DETERMINED LOW VOLTAGE OUT FROM THE IGNITION SWITCH. RECOMMENDED IGNITION SWITCH SHOULD BE REPLACED. I HAD THE IGNITION SWITCH REPLACED TWICE ALREADY. I HAVE HAD TO REPLACE THREE IGNITION SWITCHES IN THREE YEARS AT A TOTAL COST OF $817. I UNDERSTAND THAT GM HAS RECALLED IGNITION SWITCHES ON SEVERAL MODELS BUT THE ENVOY IS NOT PART OF THAT RECALL. OBVIOUSLY MY VEHICLE HAS THE SAME PROBLEM AS THE RECALLED VEHICLES, WHY IS IT NOT PART OF THE RECALL? THE FIRST IGNITION SWITCH FAILED AT 65-70 MPH ON THE FREEWAY. THIS IS A VERY DANGEROUS PROBLEM. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAVE NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT, IT COULD HAVE BEEN FATAL. *TR

ENGINE WOULDN'T CRANK AT TIMES. STARTS NORMALLY WHEN IT DOES. AFTER ABOUT A WEEK OF HAVING THIS PROBLEM I TOOK A THE CAR IN FOR SERVICE. DIAGNOSTICS DETERMINED THE IGNITION SWITCH WAS BAD AND SHOULD BE REPLACED. I HAD THE IGNITION SWITCH REPLACED 14 MONTHS AND 6070 MILES PRIOR TO THIS INCIDENT. THEY REPLACED THE IGNITION SWITCH. THE PART WAS UNDER WARRANTY BUT DIAGNOSTICS AND LABOR WAS $220. THE FIRST IGNITION SWITCH FAILED AT 65-70 MPH ON THE FREEWAY. I UNDERSTAND THAT GM HAS RECALLED IGNITION SWITCHES ON SEVERAL MODELS BUT THE ENVOY IS NOT PART OF THAT RECALL. OBVIOUSLY MY VEHICLE HAS THE SAME PROBLEM AS THE RECALLED VEHICLES, WHY IS IT NOT PART OF THE RECALL? THIS IS A VERY DANGEROUS PROBLEM. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAVE NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT, IT COULD HAVE BEEN FATAL. *TR

I WAS DRIVING ON THE FREEWAY AT 65-70 MPH. THE ENGINE LUGGED A LITTLE LIKE IT WAS RUNNING OUT OF GAS BUT THE TANK WAS HALF FULL. THE ENGINE RESUMED RUNNING AT FULL SPEED. A FEW SECONDS LATER THE ENGINE SHUT OFF. I WAS ABLE TO COAST LONG ENOUGH TO PULL OFF THE FREEWAY. BUT WITHOUT POWER STEERING AND BRAKES THIS WAS NOT AN EASY TASK. ONCE THE CAR STOPPED I TURNED OFF THE IGNITION AND PUT THE CAR IN PARK. I TRIED TO RESTART THE CAR BUT NOTHING HAPPENED. I CALLED A TOW TRUCK BUT THE DRIVER COULD NOT GET THE CAR TO SHIFT INTO NEUTRAL IN ORDER TO PUT IT ON THE CAR CARRIER BECAUSE THE SHIFTER IS TIED TO THE ELECTRONICS. WITHOUT POWER IT DOES NOT WORK. HE HAD TO CALL FOR ANOTHER TOW TRUCK TO PULL THE VEHICLE IN FOR SERVICE. THE SERVICE TECHNICIAN TESTED AND FOUND LOW VOLTAGE FROM THE IGNITION SWITCH. HE REPLACED THE IGNITION SWITCH. DIAGNOSTICS, PART AND LABOR $307. THIS IS A VERY DANGEROUS PROBLEM. IF I WAS NOT ABLE TO MOVE OUT OF TRAFFIC I WOULD HAVE BEEN A SITTING DUCK IN THE MIDDLE IF THE FREEWAY. SINCE THE REST OF THE ELECTRONICS ARE CONNECTED TO THE IGNITION I HAD NO SAFETY EQUIPMENT SUCH AS AIR BAGS. IF I WOULD HAVE BEEN IN AN ACCIDENT AT FREEWAY SPEEDS, IT COULD HAVE BEEN FATAL. *TR

TL* THE CONTACT OWNS A 2006 GMC ENVOY DENALI. THE CONTACT STATED WHILE DRIVING AT AN UNKNOWN SPEED, THE STEERING WHEEL BECAME DIFFICULT TO MANUEVER. THE CONTACT MENTIONED WHILE STARTING THE VEHICLE THERE WAS INTERMITTENTLY ROARING NOISE AND THE CHECK ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER HOWEVER, THE TECHNICIAN WAS UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 45,000 AND THE CURRENT MILEAGE WAS 60,000.

IN THE MORNING THE CAR RUN FINE, BUT ONCE THE ENGINE IS WARM AND I START TO RUN ERRANDS IT STALLS. IF I WAIT ABOUT 10MIN OR SO... I MUST SPEED HOME OR TO A SAFE AREA TO LET THE ENGINE COOL. IF I COME BACK IN A FEW HOURS,THE TRUCK WILL START WITH NO PROBLEM. IT HAS BEEN TO THE SHOP MORE OFTEN THEN I REMEMBER. IS THERE ANYONE HAVING THESE SAME ISSUES? *TR