I believe my 2002 Suburban has an electrical gremlin. The rear windshield wiper turns on randomly and cannot be stopped with the switch. My emergency brake dash board light and my abs dash board light flash constantly. My oil pressure gauge bounces slightly. Randomly, the battery light will flash and the radio will turn off and other dash board lights come on (like the engine has stalled but it doesn't actually stall) and then turn back off within a few seconds. Any ideas of where to start looking?

 

There are instrument cluster problems,but yours sounds before that,like loosing power source,or a ground,if the oil pressure sensor goes bad, internally, maybe a issue