2016 GMC YUKON Suspension Problems

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.

The contact owns a 2016 GMC Yukon. The contact stated while driving at various speeds, the vehicle would shake and vibrate. The cause of the failure was not determined. Also, the driver and passenger side retractable running boards would erroneously retract back and forth while driving, and on several occasions, while attempting to exit the vehicle the running board remained retracted causing the driver to fall to the ground and causing injuries to the driver's legs. The cause of the failures was not determined. The manufacturer and local dealer were not notified. The failure mileage was 60,000.

PURCHASED VEHICLE USED @ 32K MILES. VEHICLE ALMOST UN-RIDEABLE DUE TO ROUGH RIDE & TERRIBLE VIBRATION. TOOK TO GMC DEALER, THEY REPLACED ONE FRONT SHOCK (COMPLETELY LEAKED OUT) AND ONE BAD RIM. TRUCK STILL RIDES EXTREMELY ROUGH & HAS A VIBRATION BETWEEN 35-55 MPH. ALMOST UNBEARABLE ON LONGER RIDES. TIRES ARE BRAND NEW. DEALER SAYS THAT IT IS WITHIN SPEC. THIS SHOULD BE ILLEGAL ON A $75K MSRP "LUXURY" SUV!

VEHICLE SHAKES AND VIBRATES HORRIBLY AT HWY SPEEDS I HAVE TAKEN IT TO THE DEALERSHIP WITH NO FIX SAME PROBLEM

WHEN THE VEHICLE REACHES 40-60 MILES PER HOUR A VIBRATION OCCURS... OFTEN SOUNDS LIKE A WINDOW IS DOWN AND CAN CAUSE NAUSEA AND HEADACHE...