On a 2007-09 Solstice GXP or SKY Redline, there may be a gurgle or knock noise from the heater core area, a low heat condition and the coolant temperature gauge may read high intermittently.
These concerns may be caused by an air pocket in the cooling system. This vehicle configuration is susceptible to air pockets entering the cooling system if the reservoir cap is removed. DO NOT open the cooling system on a warm car. Doing so will induce air into the cooling system.
TIP: Any time the cooling system is bled, lift the driver's side of the vehicle slightly to insure the reservoir is the highest point in the system.
Air can enter into the system from the reservoir bleed port. With the vehicle parked on a level surface, be sure the coolant recovery container is level in the vehicle and the bleed port is above the engine outlet port. You should be able to place your finger between the inner fender and the lower front edge of the coolant container. If you have to move the front of the container up, be sure the coolant container or cap does not contact the underside of the hood when closing.
To remedy this concern, use a Vac-N-Fill coolant filler while slightly raising the driver's side of the vehicle. Repeat this process three times to ensure all air is removed from the system.
After filling, run the vehicle to achieve operating temperature (the cooling fans cycle) and test drive to verify the concern has been repaired.
TIP: Vac-N-Fill instructions can be found in SI under Engine > Engine Cooling > Repair Instructions > Cooling System Draining and Filling (GE-47716).
- Thanks to Jeff Gorenflo
These concerns may be caused by an air pocket in the cooling system. This vehicle configuration is susceptible to air pockets entering the cooling system if the reservoir cap is removed. DO NOT open the cooling system on a warm car. Doing so will induce air into the cooling system.
TIP: Any time the cooling system is bled, lift the driver's side of the vehicle slightly to insure the reservoir is the highest point in the system.
Air can enter into the system from the reservoir bleed port. With the vehicle parked on a level surface, be sure the coolant recovery container is level in the vehicle and the bleed port is above the engine outlet port. You should be able to place your finger between the inner fender and the lower front edge of the coolant container. If you have to move the front of the container up, be sure the coolant container or cap does not contact the underside of the hood when closing.
To remedy this concern, use a Vac-N-Fill coolant filler while slightly raising the driver's side of the vehicle. Repeat this process three times to ensure all air is removed from the system.
After filling, run the vehicle to achieve operating temperature (the cooling fans cycle) and test drive to verify the concern has been repaired.
TIP: Vac-N-Fill instructions can be found in SI under Engine > Engine Cooling > Repair Instructions > Cooling System Draining and Filling (GE-47716).
- Thanks to Jeff Gorenflo
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