Fuel and Emissions System Description - PCV System
Positive Crankcase Ventilation (PCV) System
The PCV valve prevents blow-by gasses from escaping into the atmosphere by venting them into the intake manifold.

A/T Differential Carrier and Final Driven Gear Replacement (A/T)
Remove the final driven gear (A) from the differential carrier (B). The
final driven gear bolts have left-hand threads.
Install the final driven gear on the differential carri ...
Map, Voice, Entering Destinations
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Regulator Valve Body Disassembly, Inspection, and Reassembly (A/T)
Clean all parts thoroughly in solvent, and dry them with compressed air.
Blow out all passages except the air check valve filter.
Inspect the regulator valve body for scoring and ...