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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 Shutoff Valve Replacement >> Installation Procedure

Installation Procedure

    Fig 1: AIR Pump Shut-Off Valve
    GM390304Courtesy of GENERAL MOTORS COMPANY
  1. Install the AIR pump shut-off valve inlet port (1) to the AIR pump outlet hose.
  2. Install the vacuum line (5) to the AIR pump shut-off valve vacuum port (4).
  3. Install the AIR hose to the AIR pump shut-off valve inlet port (3).
    4. Fig 2: AIR Pump And Associated Components
    GM353967Courtesy of GENERAL MOTORS COMPANY
  4. Install the clamp (5) securing the AIR hose to the AIR pump shut-off valve.
  5. Install the clamp (4) securing the AIR hose to the AIR pump assembly base.
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