NHTSA Complaint #11476468 — 2009 GMC YUKON

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