2017 Chevrolet Tahoe Electrical System Problems

Odometer Fraud. The contact purchased a 2017 Chevrolet Tahoe on February 21, 2026. The contact used another vehicle as a trade-in to purchase the vehicle. The contact stated that the odometer was recorded at 36,688 at the time of the sale. The contact was provided with an Experian report, which indicated that the odometer reading was last recorded at 35,900. The contact purchased the Carfax report the following day, which indicated that on March 25, 2025, the last odometer reading was 109,967. The sales representative was contacted and informed of the discrepancy, and was informed that the issue would be resolved. The contact was informed that the trade would be voided.

My car has a problem This will be the 3rd visit to the Chevy dealership and the 6th time in a garage. At this time, the original alternator that came with the Tahoe, was running high through December and replaced with a new alternator from Parts Geek. It was ok for a couple weeks and is running high again. You cannot test it from a cold start to get this reading. It must be ran for at least 20 min. After a certain amount of time the battery gauge will move to the highest point, the warning lights of ABs, traction control, stabilitrak, trailer brake light, battery light (first time on 1/27/2026 for battery light), loss of drivers assist on 1/26/2026, tire pressure light, car dies coming to a stop sign. I can’t turn it back on for at least a min. I’m stuck inside with zero power, can’t unlock the doors to get out to direct traffic, open windows or put on 4 ways so I don’t get smacked in the middle of the road. After that minute I heard a click (no key in ignition, not trying to start) and then the dash lights started coming back on again and I started it. The battery did not restart the time on the radio screen so I’m assuming I didn’t die fully. The radio screen always goes black first, then the heat goes in and out, the warning lights come on and it dies. Takes a minute or so to be able to start it again and the lights aren’t on anymore but will continue to do the same shit after awhile of driving and now daily. I’m afraid to drive it anywhere since almost getting stuck inside and plowed at an interaction. I have reached out to Chevy about this problem and was referred to take it back to the dealership again, and to reach back out as soon as it’s there to open a case on the issue.Ive had it, this has been ongoing for a year, and I have to keep paying for things that doesn’t fix the issue and it’s getting worse.

The system that I believe to be failing has to do with electrical components of the 2017 Chevy Tahoe. It has completely lost all power two times while driving this vehicle. In both instances, mine & my children's lives were at risk including those who could have hit us. If anyone had been behind me as I was turning and the car shut off mid turn, it's possible we could have been hit by a vehicle(s) going 50+ mph. It's available to you to be inspected if needed. The vehicle has been evaluated by a mechanic who says he cannot find any specific 'problem' but did have to turn off multiple error codes. The chevy dealership thinks it may have to do with the remote start antenna. This has not been reproduced by a dealer or service center but it has been reproduced by myself when I attempted to drive the car again after the error codes were turned off. I also have confirmation of this happening to another person who owns a 2017 suburban and after servicing the car they continue to have issues. They were entering onto a highway on the on ramp and their car completely lost power and stopped- I would hate to see what could have happened if this was on the highway itself as it could have had the potential of lives being lost. The only warning messages I have seen had to do with servicing the remote start, which has never worked for us despite having it worked on prior to purchasing the vehicle. There were messages about stabilitrack the first day this incident occurred but not the second time that it occurred. Both times the car will turn back on after about 5 minutes but it's as if the cars system was completely reset (clock at 12, radio setting default, etc). The fact that I know of one person with a 2017 Chevy that this has also happened to, I believe an immediate recall should be initiated as I will not be driving this vehicle until there is an answer to save our lives and others on the road.

THE ELECTRONIC SCREEN AND COMPUTER FUNCTION IS FAILING. PHONE CALLS ARE DROPPED AND OTHER FUNCTIONALITY IS FAILING INCLUDING THE INFORMATION SCREEN

Urgent Attention Needed for Chevy 2017 Tahoe Safety Concern The Chevy 2017 Tahoe is presenting a critical safety issue with the recurring error message "Trailer Brake System" on the dashboard. This leads to a complete shutdown of the vehicle and loss of control at random intervals, posing a severe danger, especially on high-speed roads and highways. Despite attempting repairs, including replacing the controller module, plug adapter, and trailer brake switch, the issue persists. This widespread problem, affecting many users, indicates a potential manufactured defect demanding immediate attention and a recall. It is crucial to address this matter promptly due to its hazardous nature, even for those who do not use a trailer. The safety of vehicle occupants is at stake, and urgent action is required to rectify this concerning issue.

There is a trailer brake warning that comes up ALOT! Even more when it is raining or cold out . It beeps continuously, can’t see the speed I am going because it’s always flashing trailer brake warning. When I dismiss the message it pops on again and again. I have read up on this VERY COMMON ISSUE , alot of people are having with the trailer brake system warning. It makes the radio system even go crazy . And me Crazy! Constantly hearing the beeping over and over .

The contact's brother owns a 2017 Chevrolet Tahoe. The contact stated that while driving 70 MPH, the check engine warning light illuminated, and the message "Reduced Engine Power" was displayed. Additionally, the vehicle decelerated to 20 MPH. The contact was able to pull to the side of the road. The contact stated that he turned on the hazards lights and continued driving 20 MPH. The contact stated that upon arriving to his residence, he connected an OBD reader to the vehicle and read diagnostic code P2138, which indicated an accelerator pedal sensor failure. The contact stated that he replaced the part himself; however, the failure persisted. The vehicle was taken to the dealer, where it was determined that there was water leaking inside the vehicle from the roof antenna mounting point, which caused the driver's side fuse box to rust, causing electrical failures. The vehicle was repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was unknown.

Vehicle is randomly not starting, it will turn over and make a click sound

The contact owns a 2017 Chevrolet Tahoe. The contact stated while attempting to start the vehicle remotely, the vehicle would not start. The contact was able to start the vehicle with the key. The contact stated while driving 5 MPH, several safety features became inoperable with an audible alert. The contact stated that the instrument cluster also went blank. The dealer was contacted and stated that it might be a wiring harness failure, and that the VIN was not included in a recall. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was not available.

The Trailer Brake System light repeatedly came on 13SEP2022 and continues to alert you while driving with alerting sound. It also is causing my SUV not to start properly and causing voltage shortage issues.

On 05/12/22, Service Trailer brake system warning alerts came on. Simply driving my Tahoe doing approximately 30 mph. We were not towing. It did it non stop for the full 30 miles home chiming and Blinking.

TL* THE CONTACT OWNS A 2017 CHEVROLET TAHOE. THE CONTACT STATED THAT HER AIR CONDITIONING NO LONGER OPERATED AS NEEDED. THE CONTACT THEN TOOK THE VEHICLE TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THE VEHICLE WITH A CRACKED CONDENSER. THE CONTACT THEN REACHED OUT TO THE MANUFACTURER AND WAS GIVEN A CASE; THE CONTACT WAS ALSO REFERRED TO THE NHTSA FOR ASSISTANCE. THE DEALER HAD YET TO BE NOTIFIED OF THE FAILURE. THE VEHICLE HAD YET TO BE REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 68,000.

TL* THE CONTACT OWNS A 2017 CHEVROLET TAHOE. THE CONTACT STATED WHILE DRIVING 20 MPH, THE VENTS STARTED TO BLOW HOT AIR. THE CONTACT STATED HE NOTICED A CRACK IN THE AIR CONDITION CONDENSER. THE VEHICLE WAS TAKEN TO EDWARDS CHEVROLET-280 LOCATED AT 5499 US-280, BIRMINGHAM, AL 35242, (205) 980-3325, WHERE THE VEHICLE WAS DIAGNOSED AND THE CONTACT INFORMED THAT THE CONDENSER NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER HAD BEEN INFORMED OF FAILURE. THE FAILURE MILEAGE WAS 51,000.

WHEN PLACED INTO REVERSE THE BACKUP CAMERA AUTOMATICALLY TURNS ON AT MAXIMUM BRIGHTNESS AND CANNOT BE DIMMED OR OVER RIDDEN. THIS CAUSES BLINDING AND INABILITY TO SEE OUT OF THE VEHICLE AT NIGHT. THE BRIGHTNESS IS SUCH THAT YOU CANNOT SEE OUT OF ANY WINDOWS FROM INSIDE THE VEHICLE. TO SEE OUTSIDE YOU MUST ROLL DOWN THE WINDOWS BUT THIS ELIMINATES THE ABILITY TO SEE WHAT IS BEHIND YOU.

AUTO (ELECTRIC) DOOR LOCK SYSTEM INTERMITTENTLY FAILS TO FUNCTION; WHEN DOORS ARE LOCKED, UNLOCK BUTTON IS FAILING TO UNLOCK THE DOORS. THIS HAS OCCURRED BOTH WHILE STATIONARY AND WHILE MOVING ON A CITY. (THIS VEHICLE IS A POLICE CANINE VEHICLE).

THE DASH COMPUTER COMES AND GOES INTERMITTENTLY. UNABLE TO VIEW MILEAGE OR FUEL GAUGE. IT HAPPENS WHEN STARTING THE VEHICLE AND REMAINS OFF FOR THE DURATION UNTIL THE CAR IS SHUT OFF. THE FREQUENCY OF IT COMPLETELY GOING BLACK IS RANDOM.