2016 GMC Yukon electrical problems

Filed Apr 30, 2026 · Electrical, Transmission · TX

Transmission went out very early. Had to get it replaced whenever I reverse. I have to really smash on the break in order for it to stop if it does stop so somethings wrong with the breaking whenever I hit a bump the left side suspension feels like I’m a lose control and sometimes my radio works and sometimes it doesn’t I’ve been trying to work with dealers I have extended warranty on it. They’re saying it’s not covered something about the brake pump is covered, but the belts are not. The transmission was put in only because it left me stranded. Otherwise I would’ve been stuck paying for that. The dealership actually helped me with that. My GPS turns on and off sometime. I’m not sure if it’s electrical

Filed Sep 14, 2025 · Electrical, Engine · CT

A side detection module pin was corroded and was disrupting the electrical signals to major vehicle components, such as the dash (DIC). The DIC would lose communication with the rest of the vehicle while driving so no vehicle operation data was visible such as speed, alerts messages, etc. This likely also caused engine failure due to the incorrect operation of the afm which is on the same electrical circuit. No warning messages were given. The bad side detection module was diagnosed and fixed at a dealer and shortly after engine issues were noticed.

Filed May 6, 2025 · Brakes, Electrical · IL

Engine light keeps appearing and when checked it shows catalytic converter needs replaces and its sensors need replaced. Brake light has short in it and I repaireable

Filed Jan 29, 2025 · Brakes, Electrical · TX

I was driving my car monday and I almost crash with the car in front of me the brakes doesnt work and then in the panel start lights of the engine the supension light and sigh saying brake asistant, the car is park because the brakes and I look for recalls and I call gmc and they says that I dont have any recall but I almost die monday because the vacum pump for the brakes fail and all the lights in the pannel start light up.

Filed Nov 15, 2024 · Brakes, Electrical · MS

The car has all of a sudden had issues with the gas and breaking. When I press the gas, it stalls then rapidly accelerates. It has to be the transmission. Also, is making a noise and will barely drive when pressing on the gas. It does not accelerate!! Could have easily gotten into a car accident! What is going on??

Filed Sep 12, 2024 · Brakes, Electrical · UT

i HAVE A SERVICE SUSPENSION LIGHT THAT CONTINUES TO POP UP ON DASHBOARD THE MOST IMPORTANT ISSUE THAT NEEDS TO BE ADDRESSED IS THE BRAKE LIGHTS. I have previously had the passenger side brake light stop working. In order to repair this you have to order a whole new taillight. My vehicle was approximatly 6 years old when this started happening. First incident (2022 with approximately 65000 miles) Yesterday, I was pulled over by a policeman and both of my brake lights are not working. We found a way to sauder (I know this is incorrect spelling) the broken metal piece back together in the taillight; however, this is not the correct way to fix the underlying problem and clearly it is only a temporary fix because the passenger side broke again in a new spot.

Filed Apr 22, 2024 · Airbags, Driver assistance · WI

LED Tail Light out

Filed Jul 26, 2023 · Brakes, Electrical · MO

The vehicle consistently alerts with service trailer brake system warnings and has progressively become more of a frequent problem with the system doing it constantly even when no trailer is being towed This has been occurring since time of purchase in March 2021 when we purchased the vehicle and has become consistently more frequent over time

Filed May 23, 2023 · Electrical, Steering · TX

My vehicle randomly locks up and shuts off while I am taking a sharp turn or parking. A 'Service StabiliTrak' warning flahses on the dashboard. The steering wheel locks and the only way to get this warning to go away is to turn the vehicle off. This is a dangerous hazard as the vehicle can come to an abrupt stop in traffic.

Filed Apr 24, 2023 · Electrical · TX

This is a very common problem with GM vehicles produced from 2015 to 2019 and is occurring in 5.3L and 6.2L gas engines. The engine coolant temperature sensor is failing and defaulting to a fail safe that turns the electric cooling fans on to full speed because it thinks the vehicle is overheating. When this sensor fails, the engine temperature gauge will not work. When the vehicle is turned off the fans will stay on for 15 minutes at full speed and will deplete the battery. The sensors are being replaced multiple times with different manufacturers and the problem returns in a matter of days or weeks. You can disconnect the battery negative post and reconnect and the problem corrects until it is tripped again at later date. GM has no solution for this. This issue will leave a driver stranded and will cause engine or transmission issues if driven while the vehicle is doing this. There is no check engine light or code tripped while this occurs either.