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

1) I just purchased the vehicle in Oct 2026 & 3 days after purchase, it broke down in Walmart parking lot due to, all the antifreeze pouring out. 2) December 2026 had to replace the front tires as they were stripped to the threads from rubbing against the fender wells. 3) January 2026 Wouldn’t start, wouldn’t turn over or anything. Had the ignition replaced. Ran fine for one week. 4) Currently won’t start. Broke down.

NHTSA complaint #11714041 — an unverified report by a vehicle owner.

ENGINE

While stopped at a light engine turned itself off with every warning light went off. Glad this didn’t happen with I was driving at highway speed as I lost all systems.

NHTSA complaint #11606846 — an unverified report by a vehicle owner.

ENGINE

Air bags deflated without warning while driving. Engine misfire for no reason. Had them checked at automove shop.

NHTSA complaint #11603306 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2009 GMC Envoy. The contact stated that while driving at an undisclosed speed, the service stabili-trak warning light illuminated. The contact stated that while depressing the accelerator pedal, the vehicle filed accelerate as intended. The contact stated that the failure occurred intermittently. The vehicle was taken to an independent mechanic, but the failure could not be duplicated. Additionally, the contact stated that the battery was drained. The contact stated that the failure had occurred several times previously. The contact stated the battery was charged. The vehicle was taken to an independent mechanic where it was diagnosed with a peracetic battery drain, the battery needed to be replaced. The vehicle was repaired. The failure reoccurred. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 145,000.

NHTSA complaint #11564458 — an unverified report by a vehicle owner.

ENGINE

The contact owned a 2004 GMC Envoy. The contact stated that while driving at an undisclosed speed, the vehicle was shaking and made an abnormal rattling sound before the vehicle lost motive power and stalled. The vehicle was restarted and driven to the dealer to be diagnosed. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 130,000. The VIN was unavailable.

NHTSA complaint #11535000 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

The contact owns a 2006 GMC Envoy. The contact stated that occasionally the vehicle was not able to be started. Additionally, while driving at various speeds, the steering wheel seized and the vehicle lost motive power. The vehicle was taken to an independent mechanic. The mechanic informed the contact that no codes appeared on the code reader and replaced the battery; however, the failure recurred. The vehicle was then taken to the dealer and diagnosed that the computer needed to be reset after the battery was replaced. The dealer reset the computer; however, the failure recurred. The vehicle was taken back to the dealer and diagnosed that there was a leak in the intake manifold after a smoke test was performed. The dealer replaced the manifold gasket; however, the failure recurred. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 142,000.

NHTSA complaint #11455737 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2006 GMC Envoy. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The failure occurred on three separate occasions. The vehicle was taken to an independent mechanic and diagnosed with fuel pump and fuel pump sensor failure. The fuel pump and fuel pump sensor needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 270,319.

NHTSA complaint #11443055 — an unverified report by a vehicle owner.

ENGINE

THE TRANSMISSION I HAD TO HAVE IT REPLACED BUT THE ONE THEY PUT IN IT IS REALLY ACTING LIKE THE OTHER TRANSMISSION DID NO REVERSE AND THE FIRST 2 GEARS WERE MAKING THIS GRINDING NOISE I'VE NEVER HEARD BEFORE AND IT HAPPENED WHEN I WAS BACKING OUT THE DRIVEWAY TO GO TO WORK LUCKY I MADE IT TO THE PLACE WHERE I GOT IT TO FIX IT BUT I BELIEVE THIS TRANSMISSION THEY PUT IN IT IS GOING TO DO THE SAME THING BECAUSE IT DRIVES JUST LIKE THE OLD ONE

NHTSA complaint #11372522 — an unverified report by a vehicle owner.

ENGINE

I JUST HAD MY BRAKES SERVICED AND MY BUSHINGS CHANGED, BUT MY ABS LIGHT STILL COMES ON. ALSO WHEN I GO TO BRAKE THE CAR STARTS TO SHAKE AND I'M GOING THE SPEED LIMIT. THE ENGINE HAS A ROUGH IDLE, AND SHUTS OFF WHEN AT A COMPLETE STOP AND WHEN THE VEHICLE IS IN MOTION. I'VE HAD MANY THINGS REPLACED ON THE VEHICLE, SUCH AS PURGE VALVE, GAS CAP. CHARCOAL CANISTER AND FUEL TANK. IN THE ENGINE THE SPARK PLUGS WERE CHANGED AS WELL AS THE COIL PACKS AND THE FUEL INJECTORS. ALONG WITH THE CAMSHAFT SENSOR. STILL GETTING P0455 AND PO0014. WON'T PASS SMOG CAN'T REGISTER VEHICLE, BUT MY ONLY MEANS OF TRANSPORTATION. 2004 GMC ENVOY XUV SLT 4DR 2WD

NHTSA complaint #11311534 — an unverified report by a vehicle owner.

ENGINE

SEVERE ELECTRICAL PROBLEMS IN VEHICLE,EVERYTHING STOPPED WORKING ON IT!!!! VEHICLE SHUT DOWN IN A MIDDLE OF A BUSY INTERSECTION, I REPLACED TRANSMISSION 2 TIMES AS WELL!!!!HAD NO LIGHTS,TURNING SIGNALS,NO HEAT HEAT THEN THE VEHICLE JUST STOPPED COMPLETELY NOTHING JUST DEAD!!! HAD BATTERY CHECKED WASNT THAT!!!! THEY TOLD ME ELECTRICAL ISSUES NOT SURE WHAT ONLY HAD VEHICLE 3 MONTHS!!! I HAD HAD 2004 TRAILER BLAZER BEFORE THIS SAME ISSUES!!!! ONLY HAD IT 2 MONTHS AND TRANSMISSION WENT OUT PD THAT THEN ONCE AGAIN ELECTRICAL PROBLEMS!!!!!

NHTSA complaint #11298334 — an unverified report by a vehicle owner.

ENGINE

MY VEHICLE WHEN PURCHASED WAS ALTERED FROM CLOTH SEATS TO LEATHER BY THE DEALERSHIP WHERE PURCHASED. 3 DAYS AGO MY CAR IS SIGNALING ME TO SERVICE AIRBAG WHILE DRIVING THE CAR OR IN IDLE. SO I IMMEDIATELY TOOK IT TO A CERTIFIED MECHANIC AT MEINEKE AND WAS TOLD THAT THIS IS A MANUFACTURER DEFECT AND THERE IS A RECALL FOR THIS ON MY YEAR, MAKE & MODEL SUV. I CALLED GM ON 11/29/2019 AND WAS TOLD BY A SUPERVISOR NAMED ANGEL THERE HAS BEEN NO RECALLS BY THEIR MANUFACTURER AND THERE IS NOTHING MORE SHE CAN DO ABOUT THE MATTER. I CANNOT DRIVE MY CAR LIKE THIS KNOWING THIS CAN BE POTENTIALLY HARMFUL AND HAZARDOUS.

NHTSA complaint #11282890 — 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 AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

TL* THE CONTACT OWNS A 2004 GMC ENVOY. WHILE THE VEHICLE WAS STATIONARY, THE EXHAUST MANIFOLD FRACTURED AND THE HEAT FROM THE EXHAUST MANIFOLD DAMAGED THE FRAME OF THE VEHICLE. THE CONTACT STATED THAT THE FAILURE CAUSED SEVERE RUST AND CORROSION. IN ADDITION, THE CONTACT STATED THAT THERE WERE HOLES IN THE FRAME. A DEALER WAS NOT MADE AWARE OF THE FAILURE. THE MANUFACTURER STATED THAT THE FAILURE WAS NOT SAFETY RELATED AND THERE WERE NO RECALLS ON THE VEHICLE. THE FAILURE MILEAGE WAS 136,000.

NHTSA complaint #11060757 — an unverified report by a vehicle owner.

ENGINE

ONLY 8 YEARS OLD AND 140,000 MILES THE EXHAUST MANIFOLD HAS CRACKED ALLOWING EXHAUST FUMES TO ENTER THE INTERIOR OF THE CAR. I HAVE HAD NO ACCIDENTS WITH THIS CAR AND I SEE NO REASON WHY THE MANIFOLD SHOULD CRACK. I HAVE HAD CARS LONGER THEN THIS THAT NEVER HAD THIS PROBLEM. MANIFOLDS SHOULD NOT JUST CRACK.

NHTSA complaint #11022250 — an unverified report by a vehicle owner.