I have a 2016 GMC Dinali 6.2 L and I was just wondering if anybody was having problems with trying to get head Gaskets I took my truck into the dealer for a tick in the engine and they said it was my Lifters and Cam and I was told it would take four days to repair that was two weeks ago they are telling me that the head gaskets are on back order and I was just wondering if it is bad to have my engine tore down for two weeks? And do not know when head gaskets will be available to finish the job.