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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls And Fuel - 1.5L (LYX) - Repair Instructions) >> Repair Instructions >> Vacuum Pump Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect Power Brake Booster Vacuum Pipe@Vacuum Pump Assembly - Power Brake Booster Vacuum Pipe Replacement (LYX)
  2. Remove Charge Air Cooler Outlet Air Tube - Charge Air Cooler Outlet Air Tube Replacement 
    3. Fig 1: Vacuum Pump Bolts
    GM4853106Courtesy of GENERAL MOTORS COMPANY
  3. Remove the vacuum pump bolts (1).
    4. Fig 2: Vacuum Pump
    GM4853107Courtesy of GENERAL MOTORS COMPANY
  4. Remove the vacuum pump (1).
  5. Remove and DISCARD the vacuum pump gasket (2).
  6. Inspect the vacuum pump seal (3) and replace if necessary. Vacuum Pump Seal Replacement 
    7. Fig 3: Vacuum Pump Shaft
    GM4853108Courtesy of GENERAL MOTORS COMPANY
  7. If replacing the vacuum pump, turn the NEW vacuum pump shaft (1) to match the position of the OLD vacuum pump shaft to allow proper alignment with the engine camshaft.
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