Diagnostic Starting Point - Engine Mechanical. Buick Allure 2009

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2009 🢒 Allure 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Diagnostic Starting Point - Engine Mechanical

Begin the system diagnosis by reviewing the:

•	Disassembled Views

•	Engine Component Description

•	Lubrication Description - Main Pressure Below 55 psi with Cylinder Deactivation (Active Fuel Management) Off

•	Lubrication Description - Main Pressure Above 55 psi with Cylinder Deactivation (Active Fuel Management) Off

•	Lubrication Description - Main Pressure Below 55 psi with Cylinder Deactivation (Active Fuel Management) On

•	Lubrication Description - Main Pressure Above 55 psi with Cylinder Deactivation (Active Fuel Management) On

•	Cylinder Deactivation (Active Fuel Management) System Description

•	Drive Belt System Description

Reviewing the description and operation information helps you determine the correct symptom diagnostic procedure when a condition exists. Reviewing the description and operation information also helps you determine if the condition described by the customer is normal operation. Refer to Symptoms - Engine Mechanical in order to identify the correct procedure for diagnosing the system and where the procedure is located.