2015 Chevrolet Tahoe Engine Problems

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving 65 MPH, the vehicle hesitated and the temperature gauge failed to function as needed, with an abnormally loud sound coming from the cooling fans. The check engine warning light illuminated, and a message about the battery was displayed, and a warning light about the battery was illuminated. The vehicle was taken to an independent mechanic, who diagnosed that the thermostat housing had failed and the wiring to the fan had failed. The vehicle was repaired. Several days later, the contact stated that on a separate occasion, the vehicle failed to accelerate as intended while depressing the accelerator pedal. The check engine warning light was illuminated. The vehicle was taken back to the independent mechanic, where it was diagnosed and determined that the catalytic converter had failed. The vehicle was repaired; however, the same day the vehicle was picked up from the independent mechanic, the check engine warning light illuminated. The vehicle was taken back to the independent mechanic, who diagnosed that the timing chain had failed. The vehicle remained at the dealer unrepaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 165,880.

Had to have motor replaced due to faulty lifters which in turn damaged the motor. No, I didn’t check with dealers, independent service centers. However, it was inspected by an independent individual who handles these type of issues on Tahoes, Suburbans, etc. Lifter issues happened in November of 2025. My vehicle is still in the shop at this writing having a new motor installed. I have never been notified of any recall for this type of issue for my particular vehicle which seems to be a common issue. Also had issues with sensors and a/c.

i got my oil changed and got a new air filter and my tahoe started acting like it was chugging put it on a machine said it was a spark in 7 cylinder got new plugs and wires and a new thermostat didnt fix it got a nee crank shaft was driving perfectly went to pass a driving doing 35 m an hr on a 55 m hr and when i did it acted like it was going to die i took it easy the two mikes home had it towed to dealership they said it was my lifter and would codt my 16000$ to fix it! i talked to 3 other mechanics and they informed me this particular engine has a recall for doing just this when it runs at 5.4 and swittchrs to 8 it sometimes blows a lifters , which is exactly what has happened if i hadnt been any cliser to home or was on the interstate this could of neen a really bad accident!

I was constantly smelling a strong odor of gas coming from the inside/outside of my 2015 Chevy Tahoe. When I purchased the vehicle in 10/23 everything appeared fine. I researched the internet to determine what the problem could be & found dozens of similar situations. People saying the fuel line rubs the undercarriage of the vehicle causing a pin hole size in the fuel line causing it to leak gas. Currently my vehicle is in the shop and the problem is TBD.

The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving at an undisclosed speed, the vehicle started to sputter and misfire before returning to normal functionality. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who determined that the #1 lifter had collapsed and was stuck in position. The vehicle was not repaired because the part was not available. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 125,000.

This 2015 Chevy Tahoe stopped without warning or warning failure indicators and continue to stop without warning, while driving on highway. Managed to drive the car slowly home. Following day the engine warning light came on after the fact. Had the car inspected by mechanic who indicated that the transmission/torque converter had failed. This mechanic has reported seeing the same issue with other Chevy Tahoes in same and similar years. Chevy has not addressed the safety hazard this transmission poses to both the driver and drivers behind the vehicle when it abruptly comes to a stop on a busy road. The car was just serviced at dealer in past month without any recommended repairs. The engine warning indicator did not work the entire time the car was whistling, stopping and jerking. Chevy should have issued a recall for this failure.

I was driving at 55 mph when the entire car shuddered and very loud babgihg and knocking occurred. Immediately the car slowed way down and lost power. Luckily I was able to sagely move it out of the lane before getting rear ended but that was only because I was in the right lane. The check engine light came on and started blinking and the traction control failure and safety radar system failure light came on. The vehicle was towed to a Chevy dealer and found out the lifters had failed and these damaged the crankshaft. The truck has 91000 miles. After researching there seems to be a very large problem with these engines failing due to the AFM system that chevy uses

The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving approximately 70 MPH, the vehicle lost motive power and decelerated to approximately 50 MPH. The contact pulled over and the steering wheel locked. The contact stated that the check engine, Reduced Engine Power, Stabili-trac, and other unknown warning lights were illuminated. The vehicle was turned off and restarted; however, the steering was still locked. The vehicle was shifted into drive(D) and failed to respond. The vehicle was towed to the residence. The vehicle was not diagnosed by a dealer or independent mechanic. The vehicle had not been repaired. The manufacturer had not been contacted. The failure mileage was 157,503.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. WHILE DRIVING 60 MPH, THE ENGINE AND STEERING WHEEL SEIZED. THE VEHICLE WAS ABLE TO RESTART AND BE DRIVEN TO THE CONTACT'S HOME. ONCE THE CONTACT ARRIVED HOME, THE VEHICLE WAS UNABLE TO RESTART. DAVIS CHEVROLET (2277 S LOOP W, HOUSTON, TX 77054) WAS CONTACTED AND STATED THAT THE EXTENDED WARRANTY ON THE VEHICLE EXPIRED. THE MANUFACTURER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 80,000.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. WHEN THE VEHICLE WAS STARTED, THE AIR CONDITIONER BLEW OUT HOT AIR. THE CONTACT EXITED THE VEHICLE AND NOTICED FLUID LEAKING FROM THE ENGINE COMPARTMENT. THE CONTACT TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC WHO DETERMINED THAT THE CONDENSER FAILED AND NEEDED TO BE REPLACED. THE DEALER WAS NOT NOTIFIED OF THE FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 84,308.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. THE CONTACT STATED THAT THE VEHICLE MISFIRED DUE TO A COLLAPSED LIFTER. THE CHECK ENGINE INDICATOR ILLUMINATED PRIOR TO THE FAILURE. THE VEHICLE WAS TAKEN TO AUTONATION CHEVROLET GULF FREEWAY (138000 GULF FWY IN HOUSTON, TX) WHERE IT WAS DIAGNOSED THAT THERE WAS A COLLAPSED LIFTER. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 129,000.

I HAVE 2015 CHEVY TAHOE THAT NEEDS A NEW AC CONDENSER. I HAVE READ HUNDREDS OF COMPLAINTS ONLINE REGARDING THIS ISSUE AND THE DEFECTIVE PART WHERE THE SEALS CRACK REQUIRING REPLACEMENT. ON TOP OF ALL THAT, ITS NOT COVERED UNDER WARRANTY AND THE PART IS BACK ORDERED UNTIL SEPTEMBER/OCTOBER 2017. SO NO AC IN THE SUMMER TIME. BRILLIANT. THIS SHOULD BE A RECALL. THE PART IS FAILING WITH NO FIXABLE ALTERNATIVE. PLEASE INVESTIGATE. THIS SHOULD NOT BE HAPPENING WITH 1 AND 2 YEAR OLD VEHICLES. THE DEALER IS CHARGING CLOSE TO $2000 TO REPLACE ON TOP OF ALL ELSE. PLEASE RESEARCH THE PROBLEM AND HOLD THEM ACCOUNTABLE.

CONDENSER WENT OUT. I HAVE A LITTLE OVER 39,000 MILES ON THIS VEHICLE AND JUST HAD TO PUT IT IN THE SHOP FOR THE CONDENSER TO BE REPLACED. I CONTACTED 2 DIFFERENT DEALERSHIPS AND BOTH HAVE TOLD ME THEY HAVE HAD TO REPLACE SEVERAL DEFECTIVE CONDENSERS. TO ME, THIS SAYS THAT GM IS AWARE OF THE ISSUE YET IS MAKING NO ATTEMPT TO RECALL THE DEFECTIVE PART. I AM ATTACHING A PHOTO TO SHOW THE LEAK IS AT A SAUDER LINE AND NOT DUE TO EXTERNAL DAMAGE. HAD A ROCK OR OTHER FOREIGN OBJECT HIT THE CONDENSER MY INSURANCE WOULD HAVE PAID FOR THIS SINCE IT WOULD BE CONSIDERED COMPREHENSIVE BUT THE TECH AT THE DEALERSHIP TOLD ME THAT IT WAS NOT DUE TO EXTERNAL DAMAGE, IT WAS DEFECTIVE. THE DARK SPOT AT THE BOTTOM OF THE PHOTO IS WHERE THE LEAK WAS & IT WAS COMING FROM THAT SEAM/SAUDER LINE.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. THE CONTACT STATED THAT THERE WAS A COOLANT LEAK BETWEEN THE TRANSMISSION AND THE COOLING LINES. THE DEALER DIAGNOSED THAT THE COOLANT LINES AND HOSES THROUGH THE TRANSMISSION NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE VIBRATED WHEN THE BRAKE PEDAL WAS DEPRESSED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED WITH EXCESSIVE VIBRATION DUE TO THE MOTOR MOUNTS. THE VEHICLE WAS NOT REPAIRED. THE DEALER STATED THAT THE MANUFACTURER WAS AWARE OF THE ISSUE AND WAS WORKING ON A REMEDY. THE FAILURE MILEAGE WAS 9,000.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. AFTER THE VEHICLE WAS STARTED, AN ABNORMAL ODOR EMITTED FROM THE VEHICLE. WHILE DRIVING, THE CONTACT NOTICED SMOKE UNDER THE HOOD OF THE VEHICLE AND NO WARNING LIGHTS WERE ILLUMINATED. IT WAS DISCOVERED THAT THERE WAS SHREDDED METAL EXPOSED AND THE AIR COMPRESSOR WAS MELTED. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 52,000.

TL* THE CONTACT OWNS A 2015 CHEVROLET TAHOE. WHEN THE VEHICLE WAS SHIFTED FROM THE V8 TO 4 CYLINDER MOTOR, THE VEHICLE BEGAN VIBRATING SEVERELY. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE FAILURE COULD NOT BE DIAGNOSED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED. THE MANUFACTURER STATED THAT THE FAILURE WAS INHERENT TO THE VEHICLE. THE FAILURE MILEAGE WAS APPROXIMATELY 12,000.

WHILE DRIVING ABOUT 65 MPH THE VEHICLE'S ENGINE SHUT OFF. THE VEHICLE WOULD NOT START BACK UP FOR APPROXIMATELY TEN MINUTES. IT NEEDED LESS THAN 20 GALLONS OF FUEL TO FILL IT UP. *JS