GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 TrailBlazer - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Positive Crankcase Ventilation Valve Replacement

Removal Procedure

    Object Number: 874375 Size: SH
  1. Remove the positive crankcase ventilation (PCV) tube (1) from the rocker arm cover.
  2. Remove the PCV valve (2) from the PCV tube (1).

Installation Procedure

    Object Number: 874375 Size: SH
  1. Install a new PCV valve (2) to the PCV tube (1).
  2. Install the PCV tube (1) to the rocker arm cover.