1990 GMC C1500 Repair Question
Topics covered: Oil pressure, Gauges, Mechanic.
Mileage: 285,000 miles.
Mileage: 285,000 miles.
Asked on April 6, 2011
Check gagues
1990 gmc pu, my check gauges lite came on and my oil pressure is registering past 60. What can cause that.
Asked by mno221Answer
Replied on April 6, 2011
Past 60psi-could be the oil pressure relief valve not opening-check it with a mechanical gauge
Replied on November 14, 2011
Is the oil pressure relief valve the same as the oil pressure switch,oreily only show a switch not valve?
Replied on November 14, 2011
No, the oil pressure relief valve is in the oil pump-the switch reads the pressure-the oil pressure relief valve controls the oil pressure