1988 riviera crt touchscreen reset
 

i have a 88 riviera with the crt touch screen i am restorng the vechical and i cant figure out how to reset the diagnostics on the the compute. says check ac check oil check battery check brake etc. all are in good working condition but i keep getting notice on the touch screen been tryin to figure out how to rest since i bought te car 3 weeks ago pease help...:confused::confused::confused: