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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 Pump Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: AIR Pump And Associated Components
    GM349261Courtesy of GENERAL MOTORS COMPANY
  1. Install the AIR pump (2) onto the rubber mounting posts (9).
  2. Connect the hoses (3) , (14) to the AIR pump (2).
    3. Fig 2: AIR Pump Assembly
    GM334923Courtesy of GENERAL MOTORS COMPANY
  3. Install the AIR pump assembly (1) into the vehicle.
  4. Install the AIR pump assembly hold down block (3) and the fastener (2).
  5. Refer to FASTENER NOTICE in Cautions and Notices.

    Install the AIR pump assembly hold down mounting bolt.

    Tighten 

    Tighten the hold down fastener (2) to 25 N.m (18 lb ft).

    6. Fig 3: AIR Pump And Associated Components
    GM349261Courtesy of GENERAL MOTORS COMPANY
  6. Connect the hose (10) to the AIR shut-off valve (13).
  7. Connect the hose clamp (12) to the AIR shut-off valve hose (10).
  8. Connect the electrical connector to the AIR pump (2).
  9. Connect the electrical connector to the AIR solenoid valve (6).
  10. Connect the electrical connector to the AIR pump relay (7).
  11. Connect the vacuum line (5) to the AIR solenoid valve (6).
    12. Fig 4: Right Rear Of Engine Compartment
    GM334930Courtesy of GENERAL MOTORS COMPANY
  12. Install the brace (8) to the fender and cowl.
  13. Test the AIR system for proper operation.
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