AH64 FIXER

I have a 6sp SS Camaro 36k miles. Drove the car to work and when I got in to go home the only thing working was the oil pressure. The rest of the needles were pegged to the left. The miles and trip were blank but all other lights work. I let it sit a day and got back in and everything was working. A few days later leaving for work had the same failure on start up. It has not failed while driving at least not yet. I took the cluster out and checked the pins and connector and it all looked good. I checked with the dealership but they could not guarantee to find the fault unless it hard failed. I have checked several threads and could not find anything similar to my problem. Any help would be greatly appreciated. Thanks Wade