Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2011COLORADO 2WD L4-2.9LREPAIR AND DIAGNOSISMAINTENANCEHOSESCOOLANT LINE/HOSESERVICE AND REPAIR
2011 Chevrolet Colorado 2WD L4-2.9L
Coolant Line/Hose: Service and Repair
2011 Chevrolet Colorado 2WD L4-2.9LSECTION Service and Repair
Engine Coolant Air Bleed Pipe Replacement
Removal Procedure
1. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement ().
2. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (Vac N Fill) (Cooling System Draining and Filling (Vac N Fill)).
3. Reposition the radiator vent inlet hose clamp (1) at the coolant air bleed pipe fitting.
4. Remove the radiator vent inlet hose (2) from the coolant air bleed pipe fitting.
5. Remove the coolant air bleed pipe bolts (309) (intake manifold shown removed for clarity).
6. Remove the coolant air bleed pipe (307) and seals (308).
7. Remove the coolant air bleed cover bolts (312), if required.
8. Remove the coolant air bleed covers (313) and seals (308), if required.
9. Remove the seals (308) from the coolant air bleed pipe and/or covers.
10. Discard the seals.
Installation Procedure
Note: Position the O-ring seal (308) onto the nipple portion of the pipe.
1. Install the seals onto the coolant air bleed pipe and/or covers.
2. Install the coolant air bleed pipe (307) and seals (308) onto the cylinder heads.
Caution: Refer to Fastener Caution (Fastener Caution).
3. Install the coolant air bleed pipe bolts (309) and tighten to 12 Nm (106 lb in).
4. Install the coolant air bleed covers (313) and seals (308), if required.
5. Install the coolant air bleed cover bolts (312), if required and tighten to 12 Nm (106 lb in).
6. Install the radiator vent inlet hose (2) to the coolant air bleed pipe fitting.
7. Position the radiator vent inlet hose clamp (1) at the coolant air bleed pipe fitting.
8. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement ().
9. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) (Cooling System Draining and Filling (Static Fill))Cooling System Draining and Filling (Vac N Fill) (Cooling System Draining and Filling (Vac N Fill)).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.