P245

Thanks watching now.

My first try will be the pressure sending unit. Isn't it alot of trouble to tear the dash apart to do the stepper motor?

New here, just purchased 06 Silverado 1500 5.3L 134K miles. My issue is the oil pressure gauge is pegged @ 80. When I start it it goes to 80 and stays there no fluctuation at all. The other day I start it and the gauge goes to 30 then drops to 0 and stays there. I listen for lifter noise and nothing, I shut off and restart goes to 30 then back to 0 and stays. Start again and same thing, still no noise from engine so I drive. After a few miles the gauge goes back to 80 and stays there again with no fluctuation when slowing to idle or speeding up. Do you think this could be the sending unit? Could it be the gauge in the dash. Any thought will be appreciated Jeff.