2017 Chevrolet Tahoe Electrical Problems

Your Tahoe is experiencing a recurring electrical problem where the charging system runs too high, causing the battery gauge to max out after 20+ minutes of driving. This triggers multiple warning lights (ABS, traction control, StabiliTrak, battery light) and causes the car to suddenly lose all power while driving, leaving you stuck inside with no ability to unlock doors or signal for help—the car won't restart for about a minute. This has happened repeatedly despite replacing the alternator twice, and it's now occurring daily, making the vehicle unsafe to drive.

Your 2017 Tahoe's electrical system has completely lost power twice while you were driving, which put you and your family at serious risk — especially the second time when the car shut off mid-turn on a highway onramp. After the power loss, the car restarts on its own after about 5 minutes, but all settings reset (clock, radio, etc.). A mechanic found multiple error codes related to the remote start system, and you've learned of at least one other 2017 Suburban owner experiencing the same sudden power loss. The issue may involve the remote start antenna or a broader electrical system failure, and it will likely require a dealer diagnostic scan and possible replacement of electrical components or software updates.

You purchased a 2017 Chevrolet Tahoe and were told the odometer showed 36,688 miles at sale, but a Carfax report revealed the last recorded reading was 109,967 miles from March 2025—a significant discrepancy suggesting possible odometer fraud. The dealer agreed to void the trade-in deal when you reported the issue. You may want to have a mechanic inspect the vehicle to verify its true mileage and condition.

Your car's touchscreen and computer system are not working properly. Phone calls are dropping when you try to use hands-free calling, and the information display isn't functioning correctly. The dealer will likely need to diagnose the infotainment system and may need to update or replace the head unit or its software.

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 .

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.

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.