general problems of the 2009 GMC Envoy

On December 20, 2015 we were traveling after dark (7:30 pm) and the head lamps went off. We managed to pull out of traffic safely. Could not figure out what happened. After sitting for approximately 5 minutes the lamps came back on and we were driving to our home and the lamps went off again. I took the vehicle to a chevy dealer and they could not help me. I then called the GMC dealer and got the same response. I then checked online and found out that gm knows of this problem which is caused by a headlamp module overheating. I know this problem is occurring to other people so why hasn't there been a recall. ? help.

Tl-the contact owns a 2009 GMC Envoy. The contact stated that while driving the head lamps failed. The contact stated that the failure was intermittent. The vehicle was not included in NHTSA campaign number: 14v755000 (exterior lighting). The vehicle was not taken to be diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 63,000. Ah.