2009 GMC Yukon Brakes Problems

I was driving around 55 miles per hour and applied the brakes. I had little to no brakes and had to use the emergency brake to stop the vehicle. Luckily there was no car in front of me or a collision would have occurred. I had multiple ABS light, service stabiltrak, service brake lights engage. It happened once more going to the next light. I pulled over and removed the negative battery cable and waited 2 minutes and re attached it. The brakes feel spongy. I have researched the forums for the electric hybrid models and there were multiple other vehicles with the same symptoms as mine. Dealership says there are no recalls for the vehicle, even though multiple other hybrids are having the same issues and wanted to charge me $135 diagnostic fee to check the brake system. This is a safety hazard and should be investigated by GMC

TL* THE CONTACT OWNS A 2009 GMC YUKON HYBRID. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE VEHICLE SURGED FORWARD. THE CONTACT STATED THAT THE FAILURE OCCURRED DAILY SINCE 2016. THE VEHICLE WAS TAKEN TO THE DEALER (THOMAS CHEVROLET, 1263 W BALTIMORE PIKE, MEDIA, PA 19063), BUT THEY COULD NOT REPLICATE THE FAILURE. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND CASE NUMBER: 8-4516506076 WAS FILED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 109,300.

IN LATE MAY 2014 I STARTED GETTING A BRAKE ERROR MESSAGE & MY BRAKES WOULD NOT WORK PROPERLY. I WOULD PUSH DOWN ON THE BRAKES & IT WOULD BE HARD TO BRAKE. I WAS BARELY ABLE TO PULL OVER, HOWEVER I MADE IT TO THE SIDE OF THE HIGHWAY & TURNED OFF MY VEHICLE, WHEN I TURNED IT ON THE BRAKE ERROR WAS GONE & MY BRAKES SEEMED TO WORK. I TOOK MY CAR TO THE DEALER ON MAY 29, 2014 THEY SAID IT WAS THE MASTER BRAKE CYLINDER SENSOR, BUT I HAD TO WAIT BECAUSE GM HAD THE ITEM ON BACK ORDER. I GOT THE CAR REPAIRED BUT THE DAY AFTER I PICKED IT UP THE SAME THING HAPPENED BUT THIS TIME MY BRAKES FAILED COMPLETELY & WE HAD TO USE THE EMERGENCY BRAKES AND ALMOST GOT INTO AN ACCIDENT DUE TO THE FAILURE. I TOOK THE CAR IN AGAIN & THEY SAID THEY NEEDED TO REPAIR THE ABS BRAKE ASSEMBLY, SO WE PROCEEDED TO APPROVE THE REPAIR & GET THAT FIXED. I PICKED UP THE CAR AFTER THIS 2ND REPAIR FOR THE SAME ISSUE,BUT WHEN I WAS DRIVING OFF THE LOT I AGAIN GOT THE SAME BRAKE ERROR MESSAGE & MY BRAKES AGAIN WERE FAILING. I DID A U TURN BACK INTO THE DEALER. MY CAR HAS BEEN THEE EVER SINCE. THIS TIME AROUND THEY SAID I NEEDED A COUPLE MORE PARTS ONE BEING AN ADAPTER GM # 25862232. HOWEVER, THIS ADAPTER IS NOT AVAILABLE ANYWHERE IN THE USA OR ABROAD. I CONTACTED GM & THEY SAID THEY KNOW MY CARS REPAIR ISSUES BUT DO NOT HAVE THE PART AND DON'T KNOW WHEN THEY WILL HAVE IT. *TR

TL*THE CONTACT OWNS A 2009 GMC YUKON HYBRID. WHILE DRIVING 20 MPH, "SERVICE BRAKES SOON" APPEARED ON THE INSTRUMENT PANEL. THE CONTACT CALLED THE LEASING COMPANY ABOUT THE BRAKES, BUT THEY FAILED SOON AFTER. HE RAN A RED LIGHT AND DROVE UP A SMALL HILL. THE CONTACT HAD TO APPLY THE EMERGENCY BRAKE IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS REPAIRED BY THE LEASING COMPANY. THE CONTACT FEELS THAT THE VEHICLE IS UNSAFE DUE TO THE BRAKE FAILURE. A RECALL WAS ISSUED, WHICH CAUSES THE VEHICLE TO STALL. THE CURRENT AND FAILURE MILEAGES WERE 12,000.