Question about 2005 Chevrolet Cobalt
Steering wheel-to-steering column nut Steering wheel from the steering column
Remove the instrument panel by removing or disconnecting the following:Defroster grille Instrument panel end caps from both sides Instrument panel trim pad, (Cavalier models only) Accessory trim plate, (Sunfire models only) Instrument panel trim plate Heater/air conditioning control assembly Radio Air ventilation ducts from the heater housing Instrument panel light electrical connector Tie bar screws Instrument panel from the tie bar Heater core outlet screws and the outlet Heater core cover-to-heater case screws and the cover.
Posted on Nov 14, 2009
Heater Core: Service and Repair
Heater Core Replacement
HEATER CORE REPLACEMENT
SA9111E Hose Clamp Pliers
CAUTION: With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of
the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the
solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person
removing the cap. Serious bodily injury may result.
1. Drain the cooling system. Refer to Draining and Filling Cooling System (2.0L (LSJ)) Draining and Filling Cooling System (2.2L (L61)) in
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Place a drain pan under the water pump drain port.
4. Loosen the water pump drain bolt and drain the coolant from the water pump.
5. Close and tighten the water pump drain bolt.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten the water pump drain bolt to 10 N.m (88 lb in).
6. Lower the vehicle.
7. Reposition the heater outlet hose clamp at the heater core using SA9111E.
8. Remove the heater outlet hose from the heater core.
9. Reposition the heater inlet hose clamp at the heater core using SA9111E.
10. Remove the heater inlet hose from the heater core.
11. Remove the heater corhow to install a heater - 943c7d2.jpg />
12. Remove the heater core.
2. Install the heater core inhow to install a heater - 989b3c6.jpg module.
3. Install the heater core cover.
4. Install the heater outlet hosehow to install a heater - 1d82ea1.jpgter core.
5. Install the hose clamp to secure the hose using SA9111E
6. Install the heater inlet hose to the heater core.
7. Install the hose clamp to secure the hose using SA9111E.
8. Fill the cooling system. Refer to Draining anhow to install a heater - a6155fe.jpgooling System (2.0L (LSJ)) Draining and Filling Cooling System (2.2L (L61)) in Cooling
Posted on Nov 15, 2009
1st set a drain -pan under the area closest the two hoses that run into the core itself and remove the 2 clamps ..let drain the fluid .
2nd remove the old heater-core from from under the dash this requires removind a few panels inside the vehicle closest area to look to reach would be where you removed the 2 outside hoses ..a bit of time is required to reach it ..after doing so remove and reinstall new heater core and reattach all screws etc as well as the outer hoses and when everything is tight and secure refill the radiator as well as turn on the heater levers to full operation and allow the fluid back into the new core this will take some time to keep an eye on the fluid levels to also get all the air that may be in the new core itself ...
Posted on Nov 15, 2009
Let me know, if needed further assistance.
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Posted on Nov 14, 2009
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Posted on Jan 02, 2017
SOURCE: chevy cobalt heater core
http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f80cb15bf&partName=Removal+%26+Installation&partId=0996b43f80cb15bf Click on link to removal.
Posted on Aug 29, 2012
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