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Home >> GMC >> 2001 >> C3500 HD 8.1 G, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 8.1L - Repair Instructions >> Repair Instructions >> Secondary Air Injection Vacuum Check Valve Replacement >> Installation Procedure

Installation Procedure

    Fig 1: AIR Pump And Associated Components
    GM349261Courtesy of GENERAL MOTORS COMPANY
  1. Install the check valve.
  2. Install the vacuum lines to the check valve (4).
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