Owners/service Manual problems of the 2008 GMC Sierra

I have to lock and unlock both of my passenger side doors manually, because the locks doesn't work with the key fob nor inside the vehicle. I feel like this is a safety issue that gm should recognize because someone could have values stolen out of their vehicles if not have the vehicle stolen if they forget to manually lock doors when there is a passenger in the vehicle.

All four door locks were intermittently inoperative & only able to function manually from the inside. Taken to dealer and diagnosed as internal failure in door lock assemblies/actuators. All four door lock assemblies were replaced at a customer cost of $900+. This is my second GMC vehicle that has had the same problem and after searching the internet this seems to be a fairly common problem. Even the dealership mechanic mentioned surprise that it has not been recalled or GMC has not been forced to fix the problem considering how often he had personally diagnosed & fixed this same problem. This is definitely a safety issue as the customer is unable to rely on the door lock system or lock/unlock the doors as usual. Multiple times, my vehicle sat at the airport for days unlocked because of this failure. Similarly, my toddler-aged children were able to open the doors to the backseat with the vehicle in motion due to the failure in the automatic assembly.