99 GMC Suburban oil pressure gauge?

Big Will

New Member
I have a 99 gmc burban that i keep in pretty good shape. I just made a road trip and the oil pressure gauge is starting to play tricks and the check guage light is comming on can this be fixed by having the oil changed? I change it every 4 months w/ 5w 30 synthetic some one please help i love this truck
 
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