Oil Pressure Test Plug: Removal
WARNING: This page is about a different car, the 2002 Buick Regal and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
On models with 3.4L engine, remove the throttle body air inlet duct. On models with 3.8L engine, remove air cleaner assembly. On all models, remove the line the pressure pipe plug (38). See Fig 1 .