Gas Recirculation Valve (egr Valve) problems of the 2013 GMC Yukon

Live in arizona. Was driving in August 2018 in afternoon vehicle failed to accelerate in intersection. Almost got tboned. Took to GMC dealership. We were so scared as we had our son in the car. Dealership kept for a week kept telling us there was nothing wrong I would not accept this for an answer I told my husband to tell them that we were not going to pick up the car could they please have a manager look at it at that point we also ask them to replace any fluids and do whatever they could to make the vehicle as safe as possible as this is our main vehicle at that point we were given a bulletin that was put out in 2015 stating that this particular car had this issue at temperatures above 110 degrees fahrenheit and when a dealership why GMC did not recall they informed us that it was due to the fact that it only affected a few state that actually get that hot I was furious with this answer I did contact a lawyer but unfortunately it did not fit into the lemon law and so nothing got done I did not know about this reporting method until just now I am in fear again as temperatures are currently heating up in arizona and have made a complaint to GMC which was very hard to do they kept telling me to take it back to dealership what dealership has already told me they cannot fix it that is why they gave me the bulletin there is nothing they can do dmc it's supposed to call dealership on Monday and call me back at this point I really feel like a recall on this vehicle is the safest option for everyone that may own or come into contact with this vehicle on the road I have a copy of the bulletin in my email GMC has stated through internet chat and phone call that they cannot locate this bulletin I do have a copy and would provide it if requested.