GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Classic - 4WD 🢒 Hybrid 🢒 Hybrid Cooling 🢒 Generator Control Module Pressure Relief Hose Replacement

Removal Procedure

    Object Number: 1206680 Size: SH
  1. Reposition the generator control module (GCM) coolant tank hose clamp (2) from the GCM coolant tank (3).
  2. Remove the GCM coolant tank hose (1) from the GCM coolant tank pressure relief (3).
  3. Reposition the GCM coolant tank pressure relief hose clamp (4) from the GCM (5).
  4. Remove the GCM coolant tank pressure relief hose (1) from the GCM (5).

Installation Procedure

    Object Number: 1206680 Size: SH
  1. Install the GCM coolant tank pressure relief hose (1) to the GCM (5).
  2. Position the GCM coolant tank pressure relief hose clamp (4) to the GCM (5).
  3. Install the GCM coolant tank pressure relief hose (1) to the GCM coolant tank (3).
  4. Position the GCM coolant tank pressure relief hose clamp (2) to the GCM coolant tank (3).

    5. 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.

  5. Top off the GCM cooling system. Refer to Generator Control Module Cooling System Draining and Filling .