GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Cooling 🢒 Generator Control Module Coolant Radiator Replacement

Removal Procedure

    Object Number: 1206689 Size: SH
  1. Drain the generator control module (GCM) cooling system. Refer to Generator Control Module Cooling System Draining and Filling .
  2. Remove the GCM radiator coolant hose (1) from the GCM radiator (2). Refer to Generator Control Module Coolant Pipe Quick Connect Fitting Replacement .

    3. Object Number: 1285622 Size: SH
  3. Remove the ambient air temperature sensor (2) from the GCM radiator bracket (3).

    4. Object Number: 1206686 Size: SH
  4. Disconnect the electrical connector from the GCM cooling fan.
  5. Remove the bolts (1) from the GCM coolant radiator (5).
  6. Remove the GCM coolant radiator (5) from the radiator core support (4).

    7. Object Number: 1310028 Size: SH
  7. Remove the bolts (4) from the GCM cooling fan (3).
  8. Remove the GCM cooling fan (3) from the GCM coolant radiator (2).

Installation Procedure

    Object Number: 1310028 Size: SH
  1. Install the GCM cooling fan (3) to the GCM coolant radiator (2).

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the bolts (4) to the GCM cooling fan (3).

    3. Tighten
    Tighten the bolts to 6 N·m (53 lb in).


    Object Number: 1206686 Size: SH
  3. Install the GCM coolant radiator (5) to the radiator core support (4).
  4. Install the bolts (1) to the GCM coolant radiator (5).

    5. Tighten
    Tighten the bolt to 9 N·m (80 lb in).

  5. Connect the electrical connector to the GCM cooling fan.

    6. Object Number: 1285622 Size: SH
  6. Install the ambient air temperature sensor (2) to the GCM radiator bracket (3).

    7. Object Number: 1206689 Size: SH
  7. Install the GCM radiator coolant hose (1) to the GCM radiator (2). Refer to Generator Control Module Coolant Pipe Quick Connect Fitting Replacement .

    8. Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing starter/generator control module damage.

  8. Fill the GCM cooling system. Refer to Generator Control Module Cooling System Draining and Filling .