2015 Chevrolet Tahoe Electrical Problems

The contact owned a 2015 Chevrolet Tahoe and stated that while driving, the vehicle's doors locked and unlocked randomly, the cabin lights flickered, and the doors failed to unlock properly during entry attempts, while the radio randomly selected its own options and the touchscreen occasionally stopped working despite the alternator and battery being replaced. Furthermore, the vehicle suddenly and randomly lost motive power and shut off on main roads, highways, and at stop signs, which caused the dashboard to flash on and off and the power steering to fail completely. When attempting to turn off the vehicle by twisting the key, it refused to shut down initially and triggered a large engine bay fan to kick on, though replacing the temperature gauges eventually resolved this specific shutdown issue. The vehicle has been taken to multiple dealers and independent mechanics, but was failed to be diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 250,000.

NHTSA ID

11740038

Incident

May 1, 2024

Mileage

250,000 mi

While driving, the vehicle experienced a total loss of power steering, accompanied by a 'Power Steering: Drive with Care' dashboard alert. The steering wheel became extremely heavy and difficult to maneuver. Simultaneously, the ABS and brake warning lights illuminated. Although I managed to bring the vehicle to a safe stop, a subsequent repair attempt failed to resolve the issue. The vehicle remains undriveable as the intermittent failure persists, creating a severe safety hazard.

NHTSA ID

11735388

Incident

Apr 24, 2026

The vehicle information system, Radio, Maps, Phone goes uncontrolled, Changes volume, radio station changes randomly and sometimes won't allow the driver to even turn off the radio; makes calls from phone contacts while driving randomly and there's NO WAY to hang up! Unable to change time on screen, plus other random electronic actions. This distracts the driver in numerous ways, diverting attention from driving while trying to manage the issue; unable to hang-up a random phone call while driving.

NHTSA ID

11708876

Incident

Jun 16, 2024

Steering wheel locked driving hazard lights on dashboard on power steering light on stranded on road with my kids took it to riverside chevrolet almost 2 months in dealership 2 technician could not give me a diagnostic on the truck they could not repair the vehicle vehicle not drivable

NHTSA ID

11706321

Incident

Sep 1, 2025

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.

NHTSA ID

11705149

Incident

Dec 5, 2025

Mileage

165,880 mi

I recently purchased this vehicle about five months ago. I took it to Riverside Chevrolet to get a diagnostic on it because my steering wheel is locked all the lights on the dashboard are on in the vehicle is not drivable almost a month and a half of Riverside Chevrolet and they could not get a diagnostic on it. Apparently the technicians there were not able to figure out what’s wrong with it. The vehicle is not drivable and it is a safety hazard

NHTSA ID

11703425

Incident

Oct 15, 2025

I really don't know what happened I was coming from okmulgee Oklahoma I went to turn my signal on to get in left lane and my truck just put itself in accessory mode and I couldn't steer causing my truck to keep straight instead of switching lanes causing me to run into a construction merge sign that damaged my truck my insurance wouldn't cover the damages cause they said it sounds like a malfunction with my truck that I need to contact dealer

NHTSA ID

11683038

Incident

Jul 15, 2025

Odometer Fraud. The contact purchased a 2015 Chevrolet Tahoe. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 116,485, and at the time of registration, it was discovered that the mileage was 150,237.

NHTSA ID

11680438

Incident

Aug 13, 2025

Mileage

150,237 mi

The 2015 Chevrolet Tahoe seems to be known for thermostat failure. My thermostat gauge while driving would drop from 210 to 160 and stay pinned on 160 and the fans would turn on. I was told by an auto body shop that it seemed to be electric issues. I also had a wire under the car catch fire and the auto body shop said that is why my standing lights would not work in the rear but my brake lights would work. It’s very dangerous that the electrical failure caused a fire to start under the car. Then, I ran into another issue just this week where the vehicle has a cracked AC condenser and is slowly losing coolant. It’s a manufacturing issue because all of them seem to crack and we’re not made with a proper seal. Another electrical issue I have is when I turn the wheel all the way to the left or right, even when the key is in and engine is on, the engine will shut off. The car completely shuts off and then I have to turn the key to the off position and then it will turn right back on. The steering wheel is also losing power steering and gets very tight when I have to make a turn. The fuses for my radio are blown and when you put new ones in, it blows immediately and doesn’t turn on. I have MANY issues with this vehicle and it’s obviously a manufacturer issue. This is not ok for a vehicle to all around have such horrible electrical issues. I have had issues driving over a pothole and I lose my radio screen or my whole dash screen and then the dealer and auto body shops say the electrical work is too in depth for them.

NHTSA ID

11671834

Incident

May 12, 2025

The trailer brake system continues to alert due to a wire control harness that’s defective. I’ve spent a ton trying to repair it but it continues to damage other parts of my car like the alternator and battery this week

NHTSA ID

11629156

Incident

Nov 1, 2024

Keeps saying service trailer brake system and does not stop ringing in the dashboard it’s very distracting while driving .

NHTSA ID

11593124

Incident

May 27, 2024

The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving 30-45 MPH, the check engine warning light illuminated. Additionally, the contact stated that while driving at an undisclosed speed at night, the vehicle shut off inadvertently. The contact was able to veer to the side of the road. The contact stated that he opened the hood and moved the battery cables around, and the vehicle was able to restart. The contact stated that the vehicle would temporarily lose electrical power while driving. The vehicle was taken to an independent mechanic, where the contact was advised to add a fuel additive in the vehicle. The contact followed the recommendation, and the check engine warning light was no longer illuminated; however, the failure later recurred. The vehicle was taken back to the independent mechanic, where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 149,000.

NHTSA ID

11580049

Incident

Jan 29, 2024

Mileage

149,000 mi

The "Service Trailer Brake System" pops up on the dash and makes noise every 45 seconds. Its distracting and dangerous to be driving while this is happening.

NHTSA ID

11574957

Incident

Mar 1, 2024

On Wednesday, 11/15/23, I was sitting in my vehicle while it was parked and running for several minutes. After a few minutes, the alert chime went off and the message "Service Trailer Brake System" was displayed on the dash notifications. This alert persisted for several minutes. Since this initial incident, the same alert has displayed 3 or 4 more times, but while driving. It repeats persistently, causing a major distraction, blocking my speedometer, and disabling bluetooth features. I nearly wrecked because of the distraction and have not been able to tow my trailer because of the risk of of the trailer brakes not working. I have an appointment scheduled with my mechanic on 11/28/23 to get this repaired, but have recently learned of several incidents of this same alert from other GM vehicle owners. This seems to be a defective wire harness and needs to be recalled as it is unsafe and renders the vehicle useless for many intended purposes.

NHTSA ID

11555866

Incident

Nov 15, 2023

While driving I periodically receive a notification on the dash to "Service Trailer Brake System". The message just randomly comes up with an abrupt warning noise which is a distraction and startles you until it goes away. I don't tow anything with the vehicle. The notification happens about once a month when driving and eventually goes away after a few minutes. I do mostly interstate driving and when the warning comes up, it startles you and you feel the need to pull over immediately. The notification noise is loud and a distraction. I will be taking it to a Chevrolet dealership. I have an appointment late August. This has been going on periodically for months.

NHTSA ID

11536234

Incident

Aug 3, 2023

Anda manejando cuando empezó a salir mucho humo por el tablero y la troca ya no respodia no podia ya aselerar y el volante se puso duro me sali de la carretera marqué al sitio de emergencia por ayuda pero la tahoe se quemo muy rápido

NHTSA ID

11521826

Incident

Oct 15, 2022

The car was bucking on the highway it was losing power without notice. There was no prior notice from Onstar system either of any mechanical issues . There was No prior indications or check engine light before this instance. I was coming home in the dark on the highway which was a dangerous position to be in. The car's transmission Failed out of no where! I have had the car 22 months and was purchased from the Chevrolet Dealer.

NHTSA ID

11515252

Incident

Mar 23, 2023

The contact owns a 2015 Chevrolet Tahoe. The contact stated that while driving at undisclosed speeds, the electrical system was failing intermittently. Additionally, several unknown warning lights were illuminated. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 122,000.

NHTSA ID

11512161

Incident

Mar 10, 2023

Mileage

122,000 mi

Check engine light came on after vehicle starting losing power in steering column. Speedometer was moving up and down with some other gauges doing the same simultaneously. The vehicle provided warning of stabilitrak after dismissed, it gave another warning stating, “Steering Assist is Reduced Drive with Care.” It became harder to accelerate and very distracting as the stabilitrak error continued to pop up with the speedometer and other gauges, such as RPM, going up and down continuously. These gauges would then stop working altogether then start to work briefly. Then, the gauges would continue to malfunction by going up and down with the stabilitrak error on screen. I got off the interstate and I have having issues with acceleration from first gear. Vehicle was hesitating which was terrifying. It was failing to engage. Transmission fluid rose from 187 to 208 degrees during a brief time period on the screen. Could not use the M gear at all.

NHTSA ID

11506712

Incident

Feb 10, 2023

Car died with no dash warning. Had battery and alternator checked, battery checked out perfectly fine but alternator needed replacing. Replaced brand new alternator. After replacing, message came up “power steering drive with care”. Steering went completely hard, no other messages or absolutely any lights on dash. Unable to drive due to car steering wheel being locked. The contact has stated that the dealership confirmed the recall and that this issue is common, yet they have not found anything wrong with the vehicle.

NHTSA ID

11504790

Incident

Jan 31, 2023

WHILE DRIVING HOME FROM CORNER STORE, POWER STEERING LOCKED UP WITH VERY LITTLE PLAY LEFT OR RIGHT. MY VEHICLE IS UNDRIVABLE AND PARKED AT THIS TIME UNTIL I FIGURE OUT WHAT TO DO. I UNDERSTAND THAT GM ISSUED A RECALL FOR SUCH SAFETY ISSUES IN 2018. I JUST BROUGHT MY VEHICLE A YEAR OR SO AGO. PLEASE ADVISE, THANKS.

NHTSA ID

11499791

Incident

Dec 31, 2022

On several occasions at various speeds, both driving straight and turning, my 2015 Chevy Tahoe has turned off. During higher speeds the SUV will turn back on, instantly, by itself but during lower speeds and turning the car has to be manual turned back on by switching into neutral, pressing the break, and pushing the start button. The most recent time this has happened, it was dark outside and I was turning. I lost everything including my head and tail lights so it was hard for oncoming traffic to see me. I also almost hit someone coming in the other lane because I was unable to fully turn due to the loss of power steering. After this happens, I get many warning/action required messages across the dashboard but no check engine light or code have come up. I will be taking it to the dealer but since it does not happen every time the care is driven, I can only hope they can experience what happens.

NHTSA ID

11492510

Incident

Nov 5, 2022

The contact owns a 2015 Chevrolet Tahoe. The contact stated that the vehicle had been experiencing electrical failures. The contact stated while driving at various speeds, warning messages indicating that the forward collision system, the StabiliTrak, and the theft deterrent had failed, and other unknown messages were displayed. The contact stated that the vehicle would suddenly shut off. The contact was able to restart the vehicle after several attempts or after adjusting the battery cable. The vehicle was taken to the local dealer on two occasions; however, the dealer could not duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 130,000.

NHTSA ID

11489077

Incident

Dec 1, 2021

Mileage

130,000 mi

1.) The wire harness between the body control modules are failing. 2.) When I tow my boat I could loose braking at any time. Display of " service trailer brake system" overrides all other displays on console. Repetitive chiming noise is very distracting and irritating. 3.) Yes, I took it back in soon after i purchased it (a lot of money) and the Chevy rep said it probably was something to do with loose wires concerning the towing. I showed them a picture of the the warning display that I took immediately. They supposedly plugged in a diagnostic reader and said that since the code was no longer showing that they were unable to determine what precisely the issue was, but it was safe to drive. 4.) Component was not inspected by anyone. I was told that if it came on and I was in the area; to bring it in so that they can see the display. 5.) Yes there was a warning message that showed up multiple times. 1 or 2 weeks after being purchased on 3/11/22. I feel that the Chevy reps know of the issue ( bad wiring harness between 2 of the body control modules) and acted as if the had no clue of the picture of the warning display that I showed them and they were able to tell me it was safe to drive even though they said they didn't know what the issue was. ???? I like Chevy vehicles; it would be nice to see Chevy stand behind their product. This is the 2nd Tahoe that I've owned, standing behind your work keeps and promotes customers.

NHTSA ID

11487172

Incident

Mar 18, 2022

I repeatedly get message to service trailer broke system. I cannot drive without the constant dinging and the message popping up on the dash. Can I even monitor my speed because the message is constantly popping up. Oh Papa that my trailer bikes, don’t seem to be working. This could be very dangerous.

NHTSA ID

11486301

Incident

Sep 25, 2022