Blue Exhaust Smoke, Warm Engine Only. GMC Truck Yukon

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1998 🢒 Yukon - 4WD 🢒 Engine 🢒 Turbocharger 🢒 Blue Exhaust Smoke, Warm Engine Only

Problem	Action
Lack of intake air	Refer to DTC P1191 Intake Air Duct Leak in Engine Controls.
Restricted oil drain tube	Clean or replace the oil drain tube. Refer to Oil Pressure High or Low in Engine Controls.
Oil leakage past the turbo seals. Refer to Inspection.	Replace the turbocharger. Refer to Turbocharger .