Question about 1982 Chevrolet El Camino

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Need to replace heater core - 1982 Chevrolet El Camino

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  • Chevrolet Master
  • 6,826 Answers

Heater Core REMOVAL & INSTALLATION


1978 and Later Without A/C
  1. Disconnect the negative battery cable and drain the cooling system. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  2. Disconnect and plug the heater hoses from the core tubes.
  3. Disengage the electrical connectors from the module case.
  4. Unbolt and remove the module's front cover and lift out the core. To install:
  5. Install the core and apply sealant to the module cover, then install the cover and secure.
  6. Engage the electrical connectors to the module case.
  7. Remove the plugs, then connect the heater hoses to the core tubes.
  8. Connect the negative battery cable, then refill the engine cooling system and check for leaks.
1967 and Later With A/C
  1. Disconnect the negative battery cable, then drain the engine cooling system to a level below heater core. CAUTION
    When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.
  2. Disconnect and plug the heater hoses at the core tubes. Plugging the hoses will help prevent excessive coolant leakage.
  3. Remove the module's rubber seal and screen. If necessary, disconnect the washer nozzle from the cowl.
  4. If necessary, remove the right windshield wiper arm.
  5. As applicable, remove or disengage, the diagnostic connector, high blower relay, thermostatic switch, ground strap and/or electrical connectors from the heater core module cover.
  6. Loosen the retainers and remove the module's top cover. The cover is sealed to the module and this seal must be broken before the cover can be removed. Be absolutely sure that all cover fasteners are removed before attempting to break the seal or cover damage will result. Take your time and be careful not to force and crack or otherwise damage the cover. NOTE: On many late model vehicles, cover interference with the vehicle's bulkhead will may removal difficult. On these vehicles it will be necessary to loosen the windshield's chromed lower trim plate for the necessary clearance.
  7. With the top cover removed, loosen or unclip the core retainer, then carefully lift the core from the vehicle. To install:
  8. Thoroughly clean the mating surfaces of the cover and the module of all old sealer.
  9. Install the heater core to the module and secure the retaining bracket.
  10. Apply a coating of sealant to the cover, then install the cover and tighten the fasteners. If the windshield trim plate was loosened for clearance, reposition and secure it.
  11. Engage the electrical connectors and components to the module cover, as applicable.
  12. If removed, install the right wiper arm.
  13. Install the module screen and rubber seal. If removed, install the washer nozzle to the cowl.
  14. Remove the plugs and reconnect the heater hoses to the core tubes.
  15. Connect the negative battery cable, then properly refill the engine cooling system and check for leaks. Fig. 3: Loosen the clamps, then disconnect the hoses from the heater core tubes need to replace heater core - 85946010.jpg Fig. 4: Remove the rubber seal from the module top cover 85946011.jpg Fig. 5: Loosen and remove the module cowl screen retainers Fig. 6: Make sure all of the screen retainers are removed, some like this one, are oneed to replace heater core - 85946013.jpgf the screen 85946013.jpg Fig. 7: If necessaryneed to replace heater core - 85946014.jpg retainer and reposition the washer nozzle 85946014.jpg need to replace heater core - 85946015.jpg Some retaining bolts may be partially hidden, check under the wiper arm 85946015.jpg Fig. 10: Disengage all electrical wiring and components from the top of the moneed to replace heater core - 85946018.jpgsrc="http://i.fixya.net/uploads/images/85946017.jpg" alt="85946017.jpg" class="h_mi" /> Fig. 11: Loosen and remove the module top coneed to replace heater core - 85946019.jpgg bolts 85946018.jpg Fig. 12: As with the cowl screen, the top cover bolts may be difficult to find 85946019.jpg Fig. 13: If the windshield's chrome trimplate interferes withneed to replace heater core - 85946021.jpgal, it will have to be loosened or removed for additional clearance 85946020.jpg Fig. 16: Once all of the bolts are removed, break the seal by lifting the top cover from the module 85946023.jpg Fig. 17: Remove the core retaining bracket; in this case by looseneed to replace heater core - prev.gif retaining bolt 85946024.jpg need to replace heater core - next.gif Lift the heater core from the module, but remember it still may contain a fair amount of coolant 85946025.jpg prev.gif next.gif

Posted on Oct 13, 2010

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Posted on Jan 02, 2017

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If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
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  • 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.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
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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.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • 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.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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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.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • 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.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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Inspect/Replace 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.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • 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.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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Inspect/Replace 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.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • 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.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

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