Bypass heater core monte carlo 3100 - 1999 Chevrolet Monte Carlo

Dennis Mulford

• 1055 Answers
• Posted on Apr 11, 2009

SOURCE: I need to know how to replace a heater core on a 2003 monte carlo

its under the dash,in the center
go too auto zone and get a manual on it or even a free print out its a fairly long process

Bruce Bracey

• 1000 Answers
• Posted on Sep 15, 2009

SOURCE: I need to know how to change a heater core in a 81

A good place to find such information is at WWW.AutoZone.com.
You can select your make and model of vehicle, go to the "how to" section and in many cases it will give you the instructions for replacing various parts and it is free.
AllData.com is another resource that you will pay less than $30 a year for your first vehicle, it is an on-line service manual web site, very good.
Below is the procedure for replacing your heater from the Auto Zone site.
Good luck, let me know.
Regards,

If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing

• The heater housing is usually under the dash and must be removed to gain access to the heater core.
• Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.

• Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
• Remove the heater coolant hoses.
• Remove the cable and/or vacuum control lines (if equipped).
• Remove the heater core securing brackets and/or clamps.
• Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
• To reinstall the heater core, reverse the removal steps.

SOURCE: how long will it take to replace a heater core in

the book time shows 2.3 hours that is if you have experience. there is no secret. just patience and dont get frustrated its up under the dash behind the center console. dont forget to take off the two heater hoses going to the heater core.

SOURCE: does dash have to be removed to install heater

no- to make it easier to work on heater core remove glove box takes a couple of minutes

SOURCE: replacing heater core on 2004 monte carlo

REMOVAL PROCEDURE 1. Remove the fuel injector sight shield. 2. Drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System. 3. Use J 38185 in order to position aside the heater hose inlet and outlet clamps at the heater core. 4. Disconnect the inlet and outlet heater hose from the heater core. 5. Remove the RH Instrument Panel Closeout/Insulator panel. 6. Remove the LH Instrument Panel Closeout/Insulator panel 7. Remove the floor carpet. 8. Remove the rear floor air outlet duct from the holes in the floor reinforcement. 9. Disconnect the rear floor air outlet duct from the heater air outlet cover. 10. Remove the rear floor air outlet duct. 11. Remove the heater air outlet cover screws (2). 12. Remove the heater air outlet cover heat stakes (1) with a small chisel. 13. Remove the heater air outlet cover from the HVAC module assembly. 14. Remove the heater core cover screws (2). 15. Remove the heater core cover heat stakes (1) with a small chisel. 16. Remove the heater core cover from the HVAC module assembly. 17. Remove the heater core from the HVAC module assembly. 18. Remove the heater core foam seal (1) from the HVAC module assembly