Digital Gauges flickering

This era Gm had issues with circuit boards on clusters and screens. There are companies online you can send the screen to for inspection and repair. Call these guys up http://www.advancedelectronics.org Alex

I don't think they would do that on purpose. It may not have been repair properly or it could be a wiring issue. If you want to get a second opinion use this link to find a repair shop near you. https://repairpal.com/repair-shops Alex