Filling Procedure
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Install the generator control module coolant pump hose. Refer to Generator Control Module Coolant Pump Hose Replacement (Pump to Radiator) , Generator Control Module Coolant Pump Hose Replacement (Pump to Pump) .
- Using the J 38185 hose clamp pliers, reposition the generator control module coolant pump hose clamp.
- Install the generator control module coolant inlet hose. Refer to Generator Control Module Coolant Inlet Hose Replacement .
- Using the J 38185 hose clamp pliers, reposition the generator control module coolant inlet hose clamp.
- Lower the vehicle.
- Slowly fill the cooling system with the pre-mixed DEXCOOL. Refer to Approximate Fluid Capacities .
- Turn the ignition ON.
- As the cooling pumps run, air will purge into the surge tank and the coolant level will drop. Top off the coolant as necessary until the coolant is maintained at the Cold Full line.
- Inspect the concentration of the generator control module coolant using the J 26568 coolant and battery tester.
- Install the coolant pressure cap.
CAUTION:
The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.
NOTE:
Use pre-mixed Dexcool only. Pre-mix DEXCOOL contains the proper 50/50 mixture of DEXCOOL and de-ionized water necessary to prevent corrosion damage to the generator control module internal heat sink. Never use tap water in the hybrid cooling system.