TrailBlazer 4WD V8-5.3L VIN M (2006)
1. Install the coolant air bleed hose to the air bleed pipe and the heater hose.
2. Position the coolant air bleed hose clamp at the coolant air bleed pipe.
3. Position the coolant air bleed hose clamp at the heater outlet hose.
4. Fill the cooling system, if necessary.