2003 GMC Envoy engine problems

ENGINE

The contact owns a 2003 GMC Envoy. The contact stated that while in drive(D), the vehicle shut off and then restarted. The message “Service Engine Soon” was displayed. The vehicle was taken to the local dealer, where it was diagnosed and determined that the instrument cluster needed to be replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer who installed the original instrument cluster, but the failure persisted. The manufacturer was not notified of the failure. The approximate failure mileage was 98,000.

NHTSA complaint #11723763 — an unverified report by a vehicle owner.

ENGINE

GRADUAL COOLANT LOSS OVER TIME AND NO EVIDENCE OF LEAK. THIS WAS DUE TO A CRACK IN THE CYLINDER HEAD THAT GM ADMITTED TO KNOWING ABOUT IN TSB 06-06-01-019B ON JUNE 12, 2007). COOLANT WAS SLOWLY LEAKING INTO THE OIL, BUT WAS UNNOTICEABLE UNTIL IT STARTED TO AFFECT OIL PRESSURE FROM THE OIL BECOMING SLUSHY AND RUINING THE ENGINE. THIS ENDED UP RESULTING IN RESULTED IN THE LOW ENGINE OIL LIGHT SUDDENLY COMING ON AND THE CAR TO STOP RUNNING ON A HIGHWAY. THE ENGINE STARTED STEAMING AND THE CAR WAS OVERHEATING. MECHANIC IS NOW SAYING THE ENGINE IS IN AN UNOPERABLE SHAPE DUE TO DRIVING WITH CONTINUED LOW OIL PRESSURE (NO LIGHT HAD APPEARED UNTIL DAY OF INCIDENT). GM HAD SENT OUT A BULLETIN ADMITTING TO THE ISSUE BUT DID NOTHING TO NOTIFY THEIR CUSTOMERS. THEY SHOULD IMMEDIATELY RECALL THE AFFECTED VEHICLES AND/OR PAY FOR A REPLACEMENT. I HAD JUST PUT IN A NEW TRANSMISSION TO MY GMC ENVOY, EXPECTING IT TO LAST FOR YEARS.

NHTSA complaint #11113393 — an unverified report by a vehicle owner.

ENGINE

CAR DIES WHEN DRIVING, CAR WONT START SOMETIMES AND HOUR OR 2 LATER STARTS MECHANIC SAID ALTERNATOR AND BATTERY ARE GOOD, IN PARKING LOT AND DRIVING IN THE CITY

NHTSA complaint #11003993 — an unverified report by a vehicle owner.

ENGINE

IT STARTED WITH ENGINE MISFIRING CAUSING ENGINE TO JOLT WHICH DAMAGED #4 COIL PACK SEAL TO FAILED ALLOWING WATER INTRUSION. IN 2008, THE GMC MECHANIC REPLACED ALL SIX COILS SEALS BUT IN 2013-PRESENT P0440 ENGINE CODE IS A LEAK IN THE EVAPORATIVE EMISSION (EVAP). LOOSE FUEL TANK FILLER CAP IS THE MOST COMMON CAUSE THAT TRIGGERS THE P0440 CODE. I FAILED A FEW SMOG CHECK SPENDING HUNDREDS OF THOUSANDS OF DOLLARS YET MY PROBLEM STILL EXISTENCE. I'VE CONTACTED THE BUREAU OF AUTOMOTIVE REPAIR BECAUSE PURRFECT AUTO IN FULLERTON,CA LIED ABOUT FIXING MY CAR. THE BAR MADE PURRFECT AUTO REPLACE THE GAS TANK AND GAS CAP YET THE ENGINE LIGHT IS STILL ON DISPLAYING CODE P0440. ITS BEEN 14 YEARS AND I'M STILL DEALING WITH THIS PROBLEM.

NHTSA complaint #10983794 — an unverified report by a vehicle owner.

ENGINE

TL* THE CONTACT OWNS A 2003 GMC ENVOY. THE CONTACT STATED THAT A STRONG FUEL ODOR EMITTED INSIDE AND OUTSIDE OF THE VEHICLE CONTINUOUSLY. ADDITIONALLY, THE ENGINE WARNING INDICATOR ILLUMINATED WHENEVER THE VEHICLE WAS IN OPERATION. THE CONTACT RECEIVED NOTIFICATION OF THE MANUFACTURER CUSTOMER SATISFACTION PROGRAM RELATED TO THE FUEL TANK INLET VALVE REPLACEMENT. THE REMEDY PART NEEDED TO PERFORM THE REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE REPAIR. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. ON NOVEMBER 23, 2015. THE FAILURE MILEAGE WAS 119,292. UPDATED 07/05/16

NHTSA complaint #10864094 — an unverified report by a vehicle owner.

ENGINE

TL* THE CONTACT OWNS A 2003 GMC ENVOY. WHILE OPERATING THE VEHICLE, THE SERVICE ENGINE LIGHT ILLUMINATED. WHILE IN FOUR WHEEL DRIVE MODE, THE VEHICLE WOULD NOT ACCELERATE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE ICV WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 150,000.

NHTSA complaint #10819707 — an unverified report by a vehicle owner.

ENGINE

MY 2003 GMC ENVOY JUST TURNS OFF AT ANY GIVEN MOMENT. OUT OF NO WHERE, WHILE DRIVING, WAITING AT A RED LIGHT OR STOPPED AT A STOP SIGN MY CAR JUST SHUTS DOWN/TURNS OFF. IT'S BEEN DOING THIS FOR YEARS. VERY DANGEROUS AND UNSAFE. SECONDLY THE "SERVICE ENGINE SOON" LIGHT ON MY 2003 GMC REMAINS ON. TOOK IT INTO BEEN SERVICED BY THE GMC DEALER SERVICE DEPARTMENT AND THEY COULDN'T FIGURE OUT THE PROBLEM. NOW I CANNOT GET MY CAR TO PASS INSPECTION NOR GET IT REGISTER. THIS IS A MAJOR PROBLEM.

NHTSA complaint #10732038 — an unverified report by a vehicle owner.

ENGINE

TL* THE CONTACT OWNS A 2003 GMC ENVOY. THE CONTACT STATED WHILE DRIVING APPROXIMATELY 30 MPH, THE CHECK ENGINE LIGHT WOULD ILLUMINATE AND THE VEHICLE WOULD STALL ON NUMEROUS OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO REPLACED THE FUEL PUMP. THE REPAIRS DID NOT REMEDY THE FAILURE. THE INDEPENDENT DIAGNOSED THAT THE FUEL TANK NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 137,000.

NHTSA complaint #10620835 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

ALL OF A SUDDEN THE POWER STEERING OF THE ENVOY SLT 2003 WAS COMPLETELY INTERRUPTED DUE TO A BROKEN SHAFT IN THE POWER STEERING PUMP. AS A RESULT THE SERPENTINE BELT SLIPPED ON THE EDGE OF THE POWER STEERING PUMP PULLEY AND WAS WEARING OUT QUICKLY, WHICH WOULD HAVE RESULTED IN A BROKEN BELT.

NHTSA complaint #10564651 — an unverified report by a vehicle owner.

ENGINE

TL* THE CONTACT OWNS A 2003 GMC ENVOY. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 45 MPH, THE CHECK ENGINE WARNING LIGHT ILLUMINATED AND THERE WAS LOSS OF ENGINE POWER. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHERE IT WAS DIAGNOSED THAT THE SENSOR PEDAL, THE CLUTCH FAN, WIRING TERMINALS, AND ACCELERATOR PEDAL NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS REPAIRED BUT THE FAILURE RECURRED. THE APPROXIMATE FAILURE MILEAGE WAS 170,000 AND THE CURRENT MILEAGE WAS 175,00.

NHTSA complaint #10510918 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

CHECK ENGINE LIGHT ILLUMINATED ON INSTRUMENT CLUSTER. DIAGNOSTICS INDICATED A CODE PO 442. THIS CODE IS INDICATIVE OF A FUEL SYSTEM LEAK IN THE EVAPORATIVE EMISSION SYSTEM. REPLACED GAS CAP. PROBLEM NOT RESOLVED. FILLED VEHICLE WITH GASOLINE IN OCTOBER 2010 AND SEVERAL TIMES SINCE. STRONG ODOR OF GASOLINE IS PRESENT. EACH TIME FUEL NOZZLE FAILS TO SHUT OFF FUEL FROM GASOLINE PUMP AND GASOLINE IS SPILLED ON THE GROUND NEAR DRIVER SIDE REAR DOOR CREATING AN ENVIRONMENTAL AND MAJOR SAFETY HAZARD. VEHICLE NEVER IN ACCIDENT OR MODIFIED IN ANY WAY. VEHICLE HAS 62,000 MILES. A COURTESY GENERAL MOTORS REPAIR PROGRAM IS IN PLACE FOR THESE VEHICLES IF THE LONG WHEELBASE MODELS. NUMEROUS OCCURRENCES IN THE SHORT WHEELBASE MODELS ALSO. THIS IS A KNOWN DEFECT ACCORDING TO THE GM DEALER THAT SERVICES THE VEHICLE, BUT THEY WANT OVER $1500 TO REPLACE THE FUEL TANK AND THE TANK UNIT WHICH INCLUDES THE FUEL PUMP, GAUGE, AND HOSE CONNECTIONS. THERE IS NO GUARANTEE THIS WILL FIX THE DIAGNOSTIC CODE THAT SETS THE CHECK ENGINE LAMP, OR THE PROBLEM OF GASOLINE LEAKAGE/SPILLAGE. THE VEHICLE WILL NOT PASS A STATE SAFETY INSPECTION AND THEREFORE IS NOT ALLOWED ON THE ROAD. A FORCED RECALL SHOULD ABSOLUTELY BE MADE FOR THESE VEHICLES. AT A COST OF OVER $35,000 FOR THIS VEHICLE, AND THE HAZARDS IT REPRESENTS, IT IS A TOTAL TRAVESTY THAT GM REFUSES TO STAND BEHIND THEIR PRODUCT.

NHTSA complaint #10372565 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

2003 GMC ENVOY - CHECK ENGINE LIGHT & REDUCED ENGINE POWER LIGHT. VEHICLE SLOWS TO 20 MPH LOSING POWER. MY DAUGHTER WAS ALMOST HIT IN THE SIDE OF THE VEHICLE AS SHE LOST POWER IN THE INTERSECTION. THANKFULLY, THE ONCOMING VEHICLE WAS ABLE TO STOP.

NHTSA complaint #10353311 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

THROAT OF GAS TANK LEAKING ON A 2003 ENVOY. REVIEWING INTERNET, FOUND MANY SIMILAR PROBLEMS ON THE ENVOY'S AND STATED IN 2007 THAT NHTSA WAS INVESTIGATING. MECHANIC STATED VERY UNUSUAL TO LEAK IN THAT SPOT. ALSO, HAVE REPLACED BOTH HEAD LIGHT SOCKETS DUE TO BURNING UP. HAVE TALKED TO MANY ENVOY OWNERS WITH THE SAME PROBLEM. WHEN BULB BURNS OUT AND THE RECOMMENDED BULB IS PUT IN PLACE THE SOCKET AND WIRING GETS SO HOT THAT THE SOCKET IS CHARRED AND IS NO LONGER FUNCTIONAL. WIRES HAVE TO BE CUT AND A NEW SOCKET WIRED IN.

NHTSA complaint #10313459 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

DRIVING ON US HIGHWAY 20 AT POSTED SPEED LIMIT 55MPH. VEHICLE SUDDENLY LOSES POWER WITH NO RESPONSE TO ACCELERATOR INPUTS. HEAVY TRAFFIC AND LIMITED PULL OFF AREA. VEHICLE WILL RESTART, DRIVE 1-2 MILES SAME PROBLEM. GAS GAUGE 1/3 FULL. NO TROUBLE CODES. 3 OCCURRENCES IN WEEK. VEHICLE IS NOW PARKED IN GARAGE. ODOMETER LESS THAN 56000 MILES. EACH TIME NO DASH LIGHTS DISPLAYED. MESSAGE CENTER DISPLAYS STOP ENGINE.

NHTSA complaint #10301795 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:COOLING SYSTEM

2003 GMC ENVOY SLE WITH 42,000 MILES. CHECK 4 WDRIVE LIGHT CAME ON THEN WENT BACK OFF. DEALER STATED THAT THE TCCM HAD TO BE REPROGRAMMED DUE TO A BULLETIN. IT COST ME OUT OF POCKET NO WARRANTIES COVER THIS. ALSO THE FAN CLUTCHES WENT OUT BUT WAS REPLACED BY EXTENDED WARRANTIES. I'M ALSO TOLD BY DEALER THAT THE STEERING LINKS ARE WORN & SHOULD BE REPLACED. THIS TOO IS AT MY COST. I HAVE ONLY HAD THIS CAR 1 YEAR. THESE HAPPENED WITH JUST A FEW WEEKS OF EACH OTHER.

NHTSA complaint #10242492 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

TL*THE CONTACT OWNS A 2003 GMC ENVOY. WHILE DRIVING 65 MPH, THE OIL WARNING INDICATOR LIGHT ILLUMINATED AND THE VEHICLE CAME TO A COMPLETE STOP. THE VEHICLE WAS STEERED TO THE SIDE OF THE ROAD AND TOWED. THE DEALER STATED THAT THE ENGINE LOCKED AND NEEDED TO BE REPLACED DUE TO AN OIL DRAIN PLUG THAT LOOSENED. THE CURRENT AND FAILURE MILEAGES WERE 55,000.

NHTSA complaint #10211787 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

2 COMPLAINTS NOTICED ENGINEE RUNNING HOT, ADDED FLUID TO RADIATOR, NEAR EMPTY. A COUPLE OF MONTHS LATER, SAME THING. 3 MONTHS LATER, DURING OIL CHANGE, MECHANIC INDICATED WHILE DOING CHECKS THAT THE RADIATOR FLUID WAS LOW. TOLD HIM THIS WAS THE THIRD TIME, HE ADDED FLUID, PRESSURE CHECKED RADIATOR - NO HOLES OR LEAKS. SEEMS TO BE EVAPORATING. AIR CONDITIONER BLOWING HOT AIR (EXCLUDING THE FACT THE PANEL WITH AC CONTROLS QUICK WORKING A LOOOONNG TIME AGO). TOOK IN TO DEALER FOR REPAIR. AFTER $600 AND ALL DAY VISIT WITH DEALER, THE PIECE BROKEN WAS THE SIZE OF A 2"-4" BLOCK OF PLASTIC. THIS LITTLE PIECE JUST QUICK WORKING, IT WAS REFERRED AS A CONTROL SWITCH OF SOME SORT UNDER THE DASH BOARD. SOUNDED KINDA HOKEY TO ME - I CAN IMAGINE A COMPRESSOR GOING OUT AND YOU DO NOT HAVE COLD AIR - THE NAME OF IT ESCAPES ME - BUT THE MECHANIC DID INDICATE THERE WAS SOME SORT OF TECHNICAL REPORT OUT THERE ON IT AS WELL. JUST FOUND OUT FROM HUSBAND THE NAME OF THE PIECE - THE ACTUATOR DOOR QUIT.

NHTSA complaint #10205425 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

2003 GMC ENVOY WITH A LIST OF PROBLEMS **NAR**CC THE CONSUMER BEGAN TO HEAR A KNOCKING AND PINGING IN THE ENGINE ON COLD STARTS AND FELT A HESITATION WHEN THE AUTOMATIC TRANSMISSION SHIFTED INTO GEAR. AFTER MANY COMPLAINTS, IT WAS FINALLY DISCOVERED THE ENGINE KNOCK WAS DUE TO SHORTER PISTONS IN THE RE-DESIGNED ENGINE AND THE HESITATION IN THE TRANSMISSION SHIFTING REQUIRED REPROGRAMMING. THE CONSUMER WAS TOLD HE WOULD HAVE TO LIVE WITH THE ENGINE KNOCK, BECAUSE IT COULD BE MORE TROUBLE TAKING THE ENGINE APART. ON A SEPARATE OCCASION, THE ENGINE STALLED DUE TO THE BATTERY DYING. FROM APRIL 2004 TO OCTOBER 2004 THE BATTERY FAILED SEVERAL TIMES AND HAD TO BE RE-CHARGED. DURING THAT SAME TIME THE ENGINE LIGHT ILLUMINATED AND EACH TIME IT HAPPENED, THE DEALER WOULD HAVE TO REPROGRAM THE ENGINE COMPUTER. THE RADIO WAS NOT FUNCTIONING PROPERLY WHICH PRIMARILY CONSISTED OF STATIC. THE DRIVER INFORMATION CENTER CONTROL KNOBS AS WELL AS THE RADIO KNOBS WORE OUT. THE FRONT CENTER CONSOLE WAS LOOSE. IT WAS DISCOVERED THAT THE ENGINE LIGHT WAS COMING ON BECAUSE THE THIRD STOP LIGHT THAT'S ON THE TOP OF THE LIFTGATE MALFUNCTIONED. THERE WAS A SHORT CIRCUIT IN THE STOP LIGHT. THE COOLING FAN BROKE, THE BRAKES AND THE LEFT FRONT HEAD LAMP HAD TO BE REPLACED. THE REAR TAIL LIGHTS, DIRECTIONAL AND SIGNAL LIGHTS HAVE BEEN REPLACED SEVERAL TIMES. THE LUG NUT BROKE WHILE A REPLACEMENT TIRE WAS BEING MOUNTED ON THE VEHICLE. THE FRONT STABILIZER LINKAGE WAS REPLACED. THE GAS TANK HAD TO BE REPLACED ALONG WITH THE FUEL LINES AND A SEAL ON THE TANK DUE TO A LEAK. THE SEAT BELT WAS DESIGNED POORLY AND THE BELT CUTS INTO THE CONSUMERS NECK. THE DRIVERS SIDE DOOR DIDN'T CLOSE PROPERLY, THE WINDSHIELD WIPERS WERE REPLACED WITHIN THE FIRST 2 YEARS.

NHTSA complaint #10185814 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:COOLING SYSTEM

AIR CONDITIONING RUNS HOT- THERE IS A TECHNICAL SERVICE BULLETIN OUT FOR THIS BUT IT NEEDS TO BE AN OPEN RECALL TO BE FIXED--- NEEDS REFLASH FOR CONTROL HEAD-THAT'S WHAT MY MECHANIC SAID.

NHTSA complaint #10169130 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

DT*: THE CONTACT STATED WHILE ATTEMPTING TO APPLY BRAKE PRESSURE AT 5 MPH OR LESS THE ENGINE STALLS WITHOUT WARNING. THE DEALERSHIP WAS ALERTED. UPDATED 04/14/06.

NHTSA complaint #10152725 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

VEHICLE OVERHEATING EVIDENT WHEN TRAVELING FOR LONG DISTANCES; WITH REPEATED CHECKING STARTING WITH THE DEALER, THEY WERE UNABLE TO CONFIRM DIAGNOSIS OF PROBLEM WHICH REPEATEDLY GOT WORSE AND AFTER CHECKING WITH A REPUTABLE REPAIR SHOP PROBLEM HAS TO DO WITH GASKET PROBLEM AND CYLINDER HEAD WARPING .

NHTSA complaint #10148526 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

1) SEQUENCE OF EVENTS - NOTHING HAPPENS WHEN WE TRY TO START. -BATTERY VOLTAGE OK, AUTO-HEADLIGHTS ON, BRIGHT - INSTRUMENT PANEL COMPLETELY DEAD -2 HOURS LATER, INSTRUMENT ON THE MILES PER HOUR INSTRUMENT IS GOING WILD, BACK AND FORTH FINALLY SETS AT ZERO, NOW ENGINE WILL START. CHECK ENGINE LIGHT IS ON FOR THE FIRST TIME - RADIO LOOSES PRESET STATION MEMORY 2) IT STARTED ABOUT A WEEK; WE HAD PROBLEMS STARTING THE WARM ENGINE. 3) AUTOMATIC CLIMATE CONTROL IS WORKING SORT OF, SOMETIME NOT 4) THE CHECK OIL CAME ON, AT THAT TIME THERE WAS PLENTY 5) THE BACKUP MIRROR OPTION IS ALWAYS LOOSING THE INPUT 6) TRANSMISSION PROBLEM LIGHT WAS ON FOR A DAY SOME TIME AGO WHILE DRIVING IN SB AND IN 2 WD, CALLED YOUR SERVICE AND WAS TOLD TO IGNORE THE DEALER REPLACED THE IGNITION SWITCH, A SUPERFICIAL FIX AS IT TURNED OUT LATER WHEN THE IGNITION SWITCH WAS REPLACED AGAIN. THE CAUSE OF THE PROBLEM WAS NOT IDENTIFIED.

NHTSA complaint #10147917 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE

THE VEHICLE WAS IN SERVICE 3 TIMES WITHIN 14 DAYS, GM SAYS THE PROBLEM WAS THE IGNITION SWITCH, I SAY THE SOURCE OF THE PROBLEM HAS NOT BEEN FIXED. ENGINE STALLED 6 TIMES IN MOVING TRAFFIC, THE "ABS" WARNING LIGHT IS ON, SOME TIME THE "CHECK ENGINE SOON" LIGHT COMES ON. DEALER REPLACES THROTTLE BODY INJECTION ASSEMBLY. NEXT DAY THE VEHICLE STALLS AGAIN WITH SAME SYMPTOMS. DEALER REPLACED IGNITION SWITCH AGAIN. !4 HOURS LATER ENGINE STALLS IN MOVING TRAFFIC. DEALER INSTALLS EVENT RECORDING DEVICE, ENGINE STALLS AND IDENTIFIED LOW IGNITION VOLTAGE (6.7 VS 13.6 VDC). SOURCE OF PROBLEM COULD NOT BE IDENTIFIED, DEALER SAYS VEHICLE IS SAFE TO DRIVE. WE FILED A LEMON LAW CLAIM.

NHTSA complaint #10147921 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

CAR: GMC ENVOY 2003 WHEN DRIVING ON A HIGHWAY CHECK ENGINE LIGHT CAME ON. "REDUCED POWER" LIGHT CAME ON TOO. ENGINE RPMS DROPPED DOWN TO 1100. BARELY AVOIDED CRASH. *JB MADE IT TO THE PARKING LOT. RESTARTED ENGINE FEW TIMES SAME PROBLEM. EXECUTED "CLEAR CHANGE OIL LIGHT" PROCEDURE FEW TIMES. IT CLEARED "CHECK ENGINE" LIGHT AND EVERYTHING IS NORMAL NOW. THE VEHICLE IS EQUIPPED WITH "CHANGE OIL" TIMER AND LIGHT. IT APPEARS THAT WHEN TIMER EXPIRED THE COMPUTER RATHER THAN TURNING "CHANGE OIL" LIGHT ON ENABLES "CHECK ENGINE" LIGHT AND DRASTICALLY REDUCES ENGINE POWER. WHEN IT HAPPENS ON A HIGHWAY IT CAN EASILY LEAD TO A CRASH. I PLAN TO TAKE THE VEHICLE TO A DEALERSHIP IN TWO DAYS. THANK YOU.

NHTSA complaint #10142959 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

I AM THE OWNER OF A 2003 GMC ENVOY SLT, 2WD, AND I HAVE HAD MY VEHICLE INTO THE DEALERSHIP THREE TIMES FOR A PROBLEM WHICH I CONSIDER AN EXTREME SAFETY HAZARD. MY VEHICLE HAS NOW FAILED FOR A 4TH TIME AND THE DEALER REFUSES TO ADMIT THAT THEY CANNOT FIX THE PROBLEM. MY VEHICLE LOSES POWER AS I AM ACCELERATING ON TO HIGHWAYS AND I HAVE ALMOST BEEN HIT BY TRUCKS ON TWO SEPARATE OCCASIONS PULLING OUT ON TO A HIGHWAY AS I AM UNABLE TO GO OVER ABOUT 10 MPH AND HAVE TO PULL OFF THE ROADWAY. THE VEHICLE WAS IN FOR A THIRD TIME FOR THAT SAME PROBLEM BACK IN JANUARY. THE DEALER HAD IT FOR A WEEK AND PUT OVER 400 MILES ON MY VEHICLE TO FIND OUT WHAT WAS CAUSING THE PROBLEM. THE SAME PROBLEM IS HAPPENING AGAIN, 6 TIMES IN 3 DAYS, AND THE SERVICE MANAGER WILL NOT ADMIT ITS THE SAME PROBLEM SINCE SO MUCH TIME HAS ELAPSED. AFTER I LOSE POWER, MY "REDUCED ENGINE POWER" AND MY "SERVICE ENGINE SOON" LIGHTS COME ON. I MUST PULL OVER AND TURN MY ENGINE COMPLETELY OFF AND THEN BACK ON AGAIN. THE "REDUCED ENGINE POWER" LIGHT GOES OUT BUT THE "SERVICE ENGINE SOON" LIGHT REMAINS ON. THE FIRST TWO TIMES THE DEALER HAD THE VEHICLE I DO NOT BELIEVE THEY REPLACED ANY PARTS AS THEY FELT IT WAS A COMPUTER PROBLEM. THE THIRD TIME THEY HAD THE VEHICLE THEY DID REPLACE SOME PART, BUT IT WAS NEVER FULLY EXPLAINED TO ME WHAT THEY REPLACED. SINCE THIS IS A SAFETY HAZARD TO ME AND MY FAMILY, I FEEL THAT THIS PROBLEM SHOULD BE REPORTED TO YOU IN CASE I AM INVOLVED IN AN ACCIDENT AND INJURIES DO OCCUR, I WANT IT ON RECORD THAT THIS PROBLEM IS OCCURRING WITH THIS VEHICLE. **PLEASE NOTE THAT THE INCIDENT DATE I HAVE ENTERED WAS THE LAST DATE IT HAS OCCURRED, I JUST STARTED KEEPING A LOG SINCE IT STARTED HAPPENING AGAIN**

NHTSA complaint #10142546 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

I OWN A 2003 ENVOY SLE. WE HAVE HAD REPEATED PROBLEMS WITH THIS VEHICLE VIBRATING AND MAKING ENGINE NOISE. I HAVE TAKEN THE VEHICLE TO TWO DIFFERENT SERVICE DEPARTMENTS (REPEATED TIMES). ONE FINALLY RECOGNIZED THAT THE NOISE EXISTED. AFTER THEY DROVE TWO OTHER ENVOYS THEY DETERMINED THAT THE NOISE WAS INHERENT TO THE VEHICLE. THE SOUND IS LIKE A BUBBLING METALLIC SOUND THAT CANNOT BE GOOD FOR THE VEHICLE. NOTHING HAS BEEN DONE TO CORRECT THE FAILURE, I HAVE BEEN TOLD TO LIVE WITH IT.

NHTSA complaint #10127143 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

AFTER STARTING THE VEHICLE, LETTING IT WARM, THE CONSUMER ENTERED THE HIGHWAY AT 65 MPH , THE VEHICLE SUDDENLY LOST POWER, THE CHECK ENGINE LIGHT AND THE ENGINE POWER REDUCED LIGHT CAME ON. THE VEHICLE WOULD ONLY DO 10 MPH. THE CONSUMER WILL HAVE THE VEHICLE SERVICED SINCE THIS IS THE SECOND OCCURRENCE. *NM WHENEVER THE VEHICLE WAS COLD, THE ENGINE LIGHT WOULD COME ON AND THEN THE VEHICLE WOULD LOSE TOTAL SPEED. *SC

NHTSA complaint #10108587 — an unverified report by a vehicle owner.