Blue Exhaust Smoke, Warm Engine Only. GMC Truck GMC P42 Commercial Chassis 1998

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Turbocharger 🢒 Blue Exhaust Smoke, Warm Engine Only

Problem	Action
Lack of intake air	Inspect the air intake duct.
Restricted oil drain tube	Clean or replace the oil drain tube.
Oil leakage past the turbo seals. Refer to Inspection.	Replace the turbocharger. Refer to Turbocharger .