Engine Clicking And Tapping Noises problems of the 2009 Chevrolet Traverse

Our check engine light came on and our vehicle started misfiring after we took it to dealer and they fixed the airbag codes so the air bag warning would go off. They said they had to change the wiring in the engine too not just between seats. We replaced all six plugs and 3 coils that the codes said were misfiring. Got it back and drove to georgia bout a 2 1/2 hour drive. Before we got there it misfired check engine light came on. We made it back on Sunday but car started losing power and check engine light kept flashing. I barley made it to exit and had to stop at gas station across from the one her ride was at. Our friends got it pulled into a spot but it made weird popping noises and had burning smell with no power then at very end power kicked in and he had to slam brakes. I left car there and forgot to lock it so we drove back to see if my husband could get it back to shop. My husband was accelerating up on ramp and car jerked and died completely. He had to fight it over to emergency lane at top of ramp. Vehicle wouldn't start. Costed 150 to have it towed to shop. Shop replaced catalytic converters after about a week cause had to fig out what hap. Drove car couple weeks it messed up again. Shop redid the wiring in engine that dealership messed up and we bought gm plugs and 3 coils. Car worked a little bit messed up again. Tried to get it 75 miles to dealership and pulled over to have it towed 150 again because it was about to die completely again. Converters had to be replaced again. Car is messed up again. Husband researched it bad timing (which makes engine skip time and it had been jerking and lurching so probably is what broke motor mount) makes the coils send too much gas and insides of converters melt and block up. If engine dies completely at 70mph on freeway a bad wreck can happen this is unsafe and Chevrolet should replace these engines.