GM Service Manual Online
For 1990-2009 cars only

Object Number: 1766218  Size: MF

Callout

Component Name

Warning: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.

Preliminary Procedures

  1. Drain the cooling system. Refer to Cooling System Draining and Filling.
  2. Remove the electronic control module (ECM). Refer to Engine Control Module Replacement.

1

Radiator Outlet Hose

Procedure

Reposition the 2 hose clamps per hose, using the GE-47622 or J 38185 .

Special Tools

    • GE-47622 Hose Clamp Pliers
    • J 38185 Hose Clamp Pliers

2

Generator Control Module Coolant Pump Hose

3

Generator Control Module Coolant Outlet Hose

4

Radiator Outlet Pipe Nut

Caution: Refer to Fastener Caution in the Preface section.

Tighten
20 N·m (15 lb ft)

5

Radiator Outlet Pipe

Procedure

Unclip and reposition wiring harness as required.