78 of the
1,753 complaints filed about the Chevrolet Suburban 1500
are about the transmission —
4% of everything owners reported.
The worst model year for it is 2007.
78
Complaints
4%
Share of all complaints
0
Crashes
1
Fires
Transmission & Drivetrain complaints by model year
2025 CHEVROLET SUBURBAN HIGH COUNTRY. Vehicle is parked in my garage. Went out in the AM and the engine only cranks, will not start. Called On Star for roadside assistance. Sent a tow truck, the vehicle could not be towed due to the electronic transmission. There is no way for an owner to place the transmission in neutral. Vehicle is stuck in my garage. GM customer service referred me back to roadside assistance who for the second time stated that they could not help me. This is a serious issue. The fact that the transmission can NOT be shifted into neutral unless the engine is running is a very serious safety concern.Called GM helpline a second time. They said that I should call for a tow on my own. Waiting for the selling dealer to call me back. Vehicle is currently stuck in my garage and GM does not care.
NHTSA complaint #11732473 — an unverified report by a vehicle owner.
On February 28, 2026 at approximately 6:08 PM, while traveling at approximately 40 mph on S. Third Street Extension near Route 119 in Mebane, NC, my 2026 Chevrolet Suburban High Country experienced a sudden catastrophic drivetrain failure at 2,010 miles with no prior warning symptoms. A loud bang was heard, and the vehicle decelerated sharply. Dashboard warnings appeared for transmission and steering service. The vehicle continued approximately 60 feet while producing severe grinding noises before all four wheels locked completely and the engine stalled. The vehicle was rendered completely inoperable and stranded in the roadway. My wife was a passenger. OnStar was contacted and dispatched local law enforcement to provide traffic control while the vehicle was disabled. OnStar also arranged emergency towing to Modern Chevrolet in Burlington, NC. This failure is consistent with the transmission control valve body defect covered under NHTSA Recalls 24V797 and 26V085 affecting GM 10-speed automatic transmissions (10L80). GM has been aware of this defect since at least 2024 yet vehicles continue to experience catastrophic wheel lockup.
NHTSA complaint #11721260 — an unverified report by a vehicle owner.
Purchased a brand new vehicle on 23Dec2025 (evening) and then drove it home and parked it in my garage. Vehicle was in my garage at 64 miles on the odometer. Vehicle started smoking and the transmission cooler line had the catastrophic failure spilling oil all over the street, driveway, and garage. It was towed from my garage to the selling dealer (Walser Polar Chevrolet in White Bear Lake, MN) on 24Dec2025. Service center confirmed a manufacturing defect in the transmission cooler line from the factory.
NHTSA complaint #11718424 — an unverified report by a vehicle owner.
Engine failed going 70mph on highway at 2k miles. Display said acceleration no longer available and app said transmission code was needing to be checked however once taking to dealer I was told it was an oil sensor then told there was shredded metal in my engine and I needed a full engine replacement. My car was in the dealership for over 50 days. I was pregnant and with two small children in the car when engine failed at high speeds. After my car was returned to me the engine overheated and failed again. The dealer claimed GM sent them an engine with cut hoses. I was 9 months pregnant when this occurred also on the highway going 65mph. GM refused to buy back the vehicle 3 times.
NHTSA complaint #11710726 — an unverified report by a vehicle owner.
7/13/25: Car repeatedly jerking/shuddering/rough ride. A flashing check engine light came on for 10 or 15 minutes. After stopping car and restarting it, the check engine light went off. 9/15/25: Car jerking and another flashing check engine light. Took to dealership. They drove it and said no codes stored. Told it was probably the transmission "breaking in." Took home. Car continued to jerk/stumble. 8/28/25 to 9/15/25: Car jerking and flashing check engine light back on. Took to Autozone. A Random/Multiple Cylinder Misfire Code was detected (P0300). Took to dealership and confirmed P0300 Code stored. GM TAC engineers involved. Told they were unable to figure out why car was having multiple misfires. Returned car to me because no active code/light. 9/29/25: Car jerking and flashing check engine light back on. Got a warning of "reduced acceleration and drive with care." Car lost power. I have video of this and contacted On Star with report generated and P0300 code. On 10/1/25 on way to dealer, car making audible ticking noise. I have video of this. Took to dealer, the ECM was replaced and oil changed because it was "very dark" (in vehicle with 4,600 miles). Car continued to jerk/stumble. Told by dealer that problem would have to get worse before diagnosis could be made. 10/31/25: Jerking and another flashing check engine light with "reduced acceleration drive with care warning." Turned car off and engine light off. On Star report P0300. Took to dealer. The dealership was given the videos of check engine lights/reduced acceleration warnings and ticking noise video. All show problem happening around 1,200 rpms. Told by dealer on 11/11/25 that GM rep said they will not pay dealer for any work because no active engine light/codes. Told to pick up car. Asked dealer today for reason in writing, but no response. Very concerned about vehicle safety when repeatedly going into limp mode and flashing check engine lights with GM offering no solution.
NHTSA complaint #11698805 — an unverified report by a vehicle owner.
Purchased the vehicle on April 7, 2025. On 7/15/25, the car had 6948 mi. and started running rough, had a loss of power, an odor from the engine, and then on the display: check engine, blinking green vehicle light, and a message stating that the car was lowering for stability control. Took the vehicle to the closest Chevrolet service. The service dept. determined that code found P0307 and P0300, cylinder seven had the most misfires above 500. After completing oil service, the vehicle began to click on the passenger side; however, it was not misfiring. They inspected and found potential lifter issue. Found ticking coming from cylinder 7 and verified misfires. Found 2 pushrods damaged. Heard noise coming from cylinder 4, removed valve cover, removed rocker arms, and found 1 pushrod damaged. They removed and replaced all lifters and 3 pushrods. They stated there was no more noise //after this repair. These repairs were completed on July 25, 2025. On 8/15/25 took back to service because it continued to run rough and made excessive noise and whistling when starting the vehicle. The dealer inspected and heard the noise, inspected the vehicle exhaust leak, checked exhaust manifolds, pipe connections, and determined there were no issues found. On 9/26/25 at 11,821 miles the car was making excessive noise, running rough, and was losing power. Drove home, and the vehicle was running rougher and losing power. No check engine lights or warnings were present. Drove home, and the vehicle was running rougher and losing power until it turned off. Towed in. Maintenance techs determined catastrophic engine failure, all bearings and engine rods seized. After this repair hen the catalytic converter failed. This car has been out of service due to engine failures for 43 days out of the 204 of ownership.
NHTSA complaint #11696802 — an unverified report by a vehicle owner.
When traveling at highway speeds our vehicle suddenly lost all engine power. Driving in the passing lane of [XXX] at 75 mph our 2023 Chevrolet suburban RST 6.2 lost all engine power and went into neutral. We were barely able to make it over to the right breakdown lane without getting hit and making it with no power. We were stranded on the busy interstate for three hours with my wife and three young kids in a very dangerous location. They were scared and because we barely made it into the breakdown lane and so close to speeding traffic had to stand outside of the vehicle close to the woods further from dangerous traffic. The Suburban was flatbedded to nearest Chevrolet dealer where we were told the engine was seized and would need to be totally replaced. We were lucky to be alive but now stranded 1000 miles away from home as we were returning from a vacation in Florida. The sudden lose of all engine power traveling on the highway with our entire family was both scary and dangerous. The suburban has now been in the shop for three weeks with no date in sight to be ready and 1000 miles away. This was a truly dangerous situation and thankfully we came out unscathed but I fear someone else may experience the same type of failure and not be so lucky. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11636839 — an unverified report by a vehicle owner.
While driving our 2023 Chevrolet Duramax diesel suburban, I was waiting, at a complete stop, against the median to make a U turn. When the traffic cleared, I began the turn when I suddenly noticed a nearly complete loss of power, hesitancy of engine engagement, and little response to the gas pedal being depressed. Then an error message appeared on the dashboard stating "Low acceleration warning". There was very little acceleration power available. The rear wheels seemed to spin. I was perilously endangered while making a U-turn across lanes because of this loss of power. The vehicle was then taken immediately to our local Chevrolet dealer who diagnosed a error code message (P0700, 0747) related to transmission valve and injectors. We are very concerned that this was a dangerous occurrence and should be further investigated. We have a 30-year history of Suburban ownership, however this is our first diesel model. We have never had problems of this significance, or seen this error message before. Since this diesel Suburban is nearly new, we are particularly concerned about the durability and safety of this vehicle. Please see attached servive report. The AC compressor was also failed and replaced
NHTSA complaint #11633963 — an unverified report by a vehicle owner.
DEF sensor has failed and required placement. Required three visits to the dealer to get them to address it (Grayling, MI, White Lake, MI and Charlottesville VA). Transmission throttle body failed and required replacement. Took 2 visits to get it addressed.
NHTSA complaint #11624410 — an unverified report by a vehicle owner.
I recently took my 2023 Chevrolet Suburban in to make sure everything was working properly with the power train... it has been having bucking and stuttering between 15-45mph, which was super concerning to me, as I am transporting 3 children [XXX]. I took in yesterday, and was called back today to confirm that the issue is happening... the problem is that instead of Chevrolet recalling these vehicles to have this computer issue taken care of... they did an update and are charging their clients to have this update done. This is a serious safety hazard, especially for families like mine that cannot afford to have this update done. I will likely have to drive around without having it done, all because of GM's greediness. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11593901 — an unverified report by a vehicle owner.
STABILITY TRACTION CONTROL LIGHT KEEPS COMING ON WHILE IN MOTION. WITH MAJOR OIL CONSUMPTION PROBLEMS. JUST IN REGULAR DRIVING I'VE HAD TRANSMISSION, AND REAR DIFFERENTIAL WORK DONE FIXED THE PROBLEM FOR A FEW MONTHS NOW BACK AGAIN WITH FLASHING CHECK ENGINE LIGHT. SAYING CYLINDER 6 MISFIRING. I'VE ALREADY SUNK IN OVER 4K IN THIS AFTER BUYING IT LAST YEAR IN DEC.OF 2017. AFTER READING COMMENTS THIS REALLY SHOULD BE A RECALL. WITH SO MANY OF THE SAME CONCERNS AND COMPLAINTS THAT HAVE BEEN LISTED.
NHTSA complaint #11157096 — an unverified report by a vehicle owner.
DASH BOARD HAS DEVELOPED MAJOR CRACKS, PARKED IN DRIVE WAY MOTOR MOUNT BROKE, DISCOVERED AT INSPECTION ENGINE HAD TO BE REBUILT DIE TO EXCESSIVE OIL CONSUMPTION (COVERED UNDER WARRANTY) WHEELS CORODED FROM INSIDE, PITTED HEAD, TIRES LEAK AIR AS A RESULT PURCHASED AS A GM CERTIFIED VEHICLE, 32K MILES. HAD TO TAKE BACK NEXT DAY DUE TO WARPED FRONT BRAKE ROTORS...ANT CHEVY, SELLERSVILLE PA.
NHTSA complaint #11004961 — an unverified report by a vehicle owner.
I WAS DRIVING ON THE NJ TURNPIKE NEAR EXIT 10, TRAVELLING TO BOSTON. AHEAD, ALL TRAFFIC WAS STOPPED IN BOTH THE INNER AND OUTER SET OF LANES. AS I DECELERATED, I HEARD A NOISE AND THE TRUCK JERKED SLIGHTLY. WHEN I TRIED TO PULL OFF THE ROAD INTO THE SERVICE LANE, I HAD NO TRANSMISSION AND HAD TO DRIFT TO THE SHOULDER. I WAS TOLD THERE WAS A CATASTROPHIC FAILURE OF THE TRANSMISSION AND IT HAD TO BE COMPLETELY REBUILT (UNDER WARRANTY). WHEN THE VEHICLE HAD AROUND 70,000 MILES (ABOUT 2 YEARS AGO, 2013), THE TRANSMISSION FAILED AGAIN AND HAD TO BE COMPLETELY REBUILT AGAIN. PATHETIC. THE VEHICLE CURRENTLY HAS 83,000 MI ON IT.
NHTSA complaint #10721217 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2001 CHEVROLET SUBURBAN 1500. THE CONTACT STATED THAT THE VEHICLE WAS SHIFTED INTO DRIVE AND THE VEHICLE FAILED TO MOVE FORWARD. THE CONTACT ALSO STATED THAT THE BRAKE WARNING LIGHT ILLUMINATED. ON ANOTHER OCCASION WHILE DRIVING AT APPROXIMATELY 5 MPH, THE ENGINE STALLED WITHOUT WARNING. THE FAILURE RECURRED MULTIPLE TIMES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, WHO DIAGNOSED THAT THE FUEL PUMP NEEDED TO BE REPLACED. THE MECHANIC ALSO STATED THAT THE ANTI LOCK BRAKE SYSTEM FAILED AND UNKNOWN PARTS NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED FOR THE ANTI LOCK BRAKE SYSTEM FAILURE BUT THE FUEL PUMP WAS NOT REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBERS: 05V379000 (SERVICE BRAKES, HYDRAULIC) AND 05V155000 (FUEL SYSTEM, GASOLINE). THE APPROXIMATE FAILURE MILEAGE WAS 100,000.
NHTSA complaint #10661611 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2007 CHEVROLET SUBURBAN 1500. WHILE DRIVING APPROXIMATELY 30 MPH, THE VEHICLE FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED AND THE VEHICLE BEGAN TO REVERSE. THE CONTACT HAD TO IMMEDIATELY PLACE THE SHIFT LEVER INTO THE PARK POSITION. THE FAILURE OCCURRED FOUR TIMES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO STATED THAT THE TRANSMISSION NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE PERSISTED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.
NHTSA complaint #10655092 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2002 CHEVROLET SUBURBAN 1500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 10 MPH, THE VEHICLE FAILED TO ACCELERATE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 130,000.
NHTSA complaint #10653898 — an unverified report by a vehicle owner.
HAD SERVICED THE TRANSFER CASE AND HAD TAKEN IT BACK TWICE NOW BESIDES A NOISE LIKE THAT OF A POWER STEERING PUMP GOING BAD ( WHINING ) , HAD A TURNING CLUNK NOISE COMING AND AT A STOP LIGHT I SAW SMOKE COMING FROM PASSENGER SIDE, GOT TO PARK IT AND SMELLED LIKE SOMETHING IS BURNING .BRING IT BACK TO SEE IF THE MECHANIC WILL WORK ON IT SINCE IT HASN'T BEEN 30 DAYS. PLEASE NOTIFY ME OF ANYTHING DO TO THE TRANSFER CASE.
NHTSA complaint #10654073 — an unverified report by a vehicle owner.