2015 Chevrolet Tahoe Electrical System Problems

The contact owns a 2015 Chevrolet Tahoe. The contact stated that the message “Service Trailer Brake System” was displayed on the instrument panel while starting the vehicle. The vehicle was taken to the dealer, but the vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 71,000.

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.

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

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.

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

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.

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.

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.

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.

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.

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.

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.

Keep getting a message saying TRAILER SYSTEM ISSUE.Has occurred over the past few years but recently has shown up more than once about every day.I don’t have a picture at this time but please help with resolving this issue it is very annoying

While driving the children to school making a Right turn in the school grounds. The Tahoe completely shut down and restarted. In the 10 seconds it was down I was unable to steer the vehicle and there was absolutely no power. When the vehicle restarted itself the "service trailer brake system", "Service stabilitrac" message come over the display. I immediately took it to the Sun Auto who recently replaced the AC compressor, they kept the vehicle for one day and part of another and they could not find any issues. It seems as if there is battery drainage and this has been inspected by North Side Chevrolet and they have been There are no service indicators and or messages. This is the second time it has done this to me and I am concerned for one my life, the five year old twins I drive everyday and any other people that could potentially be harmed by such a terrifying shut down. Imagine if I am on the highway driving to my job at the hospital and this happens.

I purchased this 2015 Chevrolet Tahoe in 2017. It was a certified pre owned vehicle from a dealership. The vehicle continues to have the warning message of “service trailer brake system”

I purchased this vehicle a few weeks ago. I was told by the Salesman that everything worked in the car. I test drove it and the lane departure warning was working so I assumed the forward collision would be working. In real life driving, I have nearly run in to numerous cars as the forward collision does not work. In one instance, someone slammed on their breaks, my collision didn't alert me, thankfully I saw it, but I had to swerve off the road to keep from hitting them. In addition, the cooling seats work, but the heated seats do not work on either side of the front seats. Lastly, I have discovered that my Navigation system does not work. I can't get it to change to my current location and the GPS is X'd out. This is what I have so far, but sadly, I feel more things are going to happen with this vehicle. I am working with the dealership on the forward collision and heated seats, but don't know if I will get anywhere with them. They have said they will not fix the Navigation system, which is affected by the CAL (calibration) error message on my screen.

Trailer brake system chime goes off constantly. Chevy refuses to fix the defective wire harness. It is distracting and I have no idea if my trailer brakes would properly function if i were to tow. We ranch, but have avoided using my vehicle for this reason. This has happened continuously since 2019.

The contact owns a 2015 Chevrolet Tahoe. The contact stated while driving on the highway at an undisclosed speed, the trailer braking system warning light illuminated. The contact stated that the failure recurred several times. The vehicle was not taken to be diagnosed or repaired. Neither the manufacturer nor the dealer had been notified of the failure. The failure mileage was 123,917.

Have to researching online it is a very very common issue with the 2015 Tahoes and up. The radio/display screen constantly starts going haywire and scanning through stations changing stations as well as the screen on my gauge cluster which is going to end up causing an accident constantly trying to stop it from scanning and changing stations. It's like the whole screen has a mind of its own

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.