GM Service Manual Online
For 1990-2009 cars only

Oil Pan Fluid Leak for GMC Truck GMC P42 Commercial Chassis 1999

Oil Pan Fluid Leak

Checks

Cause

Oil Pan (28)

The pan is damaged or the pan is not flat

Gasket (29)

Damaged

Case (7)

Porosity or cracked

Bolt (27)

    • The flange is inside out
    • High or low torque