Impala V6-3.9L (2007)
Transmission Pressure Test Port: Service and Repair
Automatic Transmission Fluid Pressure Test Hole Plug Replacement
Preliminary Procedure Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement for the 3.5L engine, Air Cleaner Outlet Duct
Replacement for the 3.9L engine, Air Cleaner Resonator Outlet Duct Replacement for the 5.3L engine.