7 complaints reported

2020 Chevrolet Tahoe Electrical System

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
7
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Aug 2026

On multiple occasions, my car has locked my keys on the INSIDE of the vehicle. I have put things inside my vehicle before leaving and closed all the doors, upon returning, even just a few minutes later, my doors are locked and I am locked out of my vehicle. Additionally, my car is not detecting my remote. I cannot unlock my car with the buttons on the door and need to have my keys in hand for my car to detect the fob. Additionally, if someone opens the door while the car is running but in park, and then closes the door, the Car will beep as if there is no longer a remote detected. This has happened on multiple occasions. I have changed the batteries in the fobs multiple times, switched out my fobs so I was using a different fob and it has happened with both of my fobs.

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: Oct 2025
Dec 2024

Trailer brake system warning comes on an alarms tones begin. Distracted driving situation and faulting wiring issue. Has occurred on multiple occassions in addition to this time.

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: Dec 2024
May 2024

I writing to complain about the "Trailer Brake" warning light that suddenly appeared on my 2020 Chevrolet Tahoe. After visiting the internet I then saw other complaints about the module on the dash for the trailer brake adjustment having repeated complaints. I have never used the 2020 Chevy Tahoe to tow a trailer that had its own braking system. The only thing I have towed was a small U-Haul Trailer. All the complaints about this module is the same: Warning light on the dash display. If so many other Chevy Tahoe owners have complained ... what hasn't there been a recall for this repeated electrical malfunction?

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: May 2024
May 2024

Trailer brake warning message, making car un drive able

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: May 2024
Feb 2023

Back up camera does not work. Quick google search shows this is a common issue in GM vehicles with no real identifiable fix. Starts with blurred lines and within weeks it turns to just a blue screen. Backup camera is a safety feature and therefore should be investigated by NHTSA.

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: Jan 2023
May 2022

The contact owns a 2020 Chevrolet Tahoe. The contact stated that the service trailer brake system warning light illuminated intermittently. The recurrence of the warning light being illuminated had increased mostly while driving at highway speeds. The contact had not taken the vehicle to the dealer to be diagnosed. The vehicle was not repaired. The manufacturer was not made aware of the issue. The approximate failure mileage was 60,000.

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: May 2022
Feb 2022

Auxiliary battery exploded while vehicle was in operation. Explosion caused damage to front driver side headlight, hood insulation, windshield washer reservoir, terminal covers and battery. See attached images. Later learned of GM service bulletin (19-NA-099) regarding overheating of relay causing melted terminals on auxiliary battery

Type: Vehicle, Vehicle: 2020 CHEVROLET TAHOE, Manufacturer: General Motors, LLC
Incident: Feb 2022

Trend Over Time

Complaints by year

Quick Summary

The 2020 Chevrolet Tahoe has 7 Electrical System complaints on file. Review the timeline above for detailed owner experiences.