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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1620 (Engine Cooling System) >> Repair Instructions >> Water Crossover Replacement (8.1L Engine) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System .
  2. Remove the drive belt tensioner.
  3. Reposition the inlet hose clamp at the water crossover.
  4. Remove the inlet hose from the water crossover.
    Fig 1: Remove Inlet Hose
    G02109168Courtesy of GENERAL MOTORS CORP.
  5. Reposition the heater inlet hose clamp at the water crossover.
  6. Remove the heater inlet hose from the water crossover.
    Fig 2: Remove Heater Inlet Hose
    G02109169Courtesy of GENERAL MOTORS CORP.
  7. Reposition the bypass hose clamps at the water crossover and water pump.
  8. Remove the bypass hose.
    Fig 3: Remove Bypass Hose
    G02109170Courtesy of GENERAL MOTORS CORP.
  9. Remove the generator. Refer to GENERATOR (4.3L ENGINE) or  GENERATOR (4.8L, 5.3L & 6.0L ENGINES)  or  GENERATOR (6.6L ENGINE)  or  GENERATOR (8.1L ENGINE)  .
  10. Remove the power steering pump. Refer to POWER STEERING PUMP REPLACEMENT (6.6 L DIESEL or  POWER STEERING PUMP REPLACEMENT (4.3 L)  or  POWER STEERING PUMP REPLACEMENT (4.8L, 5.3L AND 6.0L)  or  POWER STEERING PUMP REPLACEMENT (8.1L)  .
  11. Remove the generator bracket bolts and nut.
  12. Remove the generator bracket stud.
  13. Remove the generator bracket.
    Fig 4: Remove Generator Bracket, Bolts & Nut
    G02109171Courtesy of GENERAL MOTORS CORP.
  14. Remove the water crossover bolts.
  15. Remove the water crossover.
  16. Remove and discard the water crossover gaskets.
    Fig 5: Remove Water Crossover, Gaskets & Bolts
    G02109172Courtesy of GENERAL MOTORS CORP.
  17. If replacing the water crossover remove the following:
    1. 17.1. Water outlet bolts (2)
    2. 17.2. Water outlet (1)
    3. 17.3. Thermostat (3)
    Fig 6: Remove Water Outlet, Bolts & Thermostat
    G02109173Courtesy of GENERAL MOTORS CORP.
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