Question about 1999 Chevrolet Lumina

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How do I replace the heater core in a 1999 Lumina?

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This will take a while, and finding a Haynes Manual for it will make it easier. All but the hoses are removed from under the passenger side dash and it's justa a matter of removing screws and panes until you see it. I wuld diconnect the battery as some of the wires under the dash are AIRBAG. Good luck it's not that bad a job.

Posted on Aug 02, 2009

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Posted on Jan 02, 2017

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Will heater core on 1995 lumina and 1994 lumina interchange


The easiest way to see if a part will cross to other vehicles is to use an online parts store. Napaonline.com, autozone.com, oreilly's.com, etc. look up the part for the 95 and then check to see if the same part is used for a 94.

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How do you change 1992 chev lumina heater core


if the coolant level is at the proper level and the thermostat is good then before you pull the heater core out you can try disconnecting the heater hoses and drain or blow out as much coolant out of the heater core then connect separate hoses to the spigots and fill the heater core with CLR and let it sit for an hour before draining then flush out with water and repeat if necessary this sometimes works and you won`t have to remove the heater core.

Sep 15, 2014 | 1992 Chevrolet Lumina

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1996 Chevy Lumina overheats. Radiator replaced, water pump replaced, thermostat replaced, heater core bypassed, temp sensor replaced. Air blowback into the overflow tank. Looks like it is boiling but it...


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Need to back flush heater core on 1999 dodge stratus where is hoses located


Regarding this types of problem,i suggest you to go through this help links.Click the link below to go through the procedure and troubleshoot the problem :----HOW TO REPLACE AN UPPER RADIATOR HOSE

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-upper-radiator-hose.html

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HOW TO REPLACE A LOWER RADIATOR HOSEhttp://schematicsdiagram.blogspot.com/2011/07/how-to-replace-lower-radiator-hose.html
----------How to Flush Heater Core?http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html
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For heater core replacing procedure. I suggest you to go through this related help links.Its all complete step by step procedure: ----How to replace heater core for All car models?

Click the link below: ---

http://technoanswers.blogspot.com/2011/11/how-to-replace-heater-core-for-all-car.html

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How to Flush Heater Core?

http://schematicsdiagram.blogspot.com/2011/12/how-to-flush-heater-core.html

---------------
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http://howtobyme.blogspot.com/2011/12/how-to-remove-heater-core-on-2008-honda.html
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http://howtobyme.blogspot.com/2011/12/honda-heater-core-replacement.html

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How to replace heater core?http://technoanswers.blogspot.in/2012/02/how-to-replace-heater-core-on_10.html
How to replace heater core on Buick Regal?

http://howtobyme.blogspot.in/2012/02/how-to-replace-heater-core-on-buick.html
----------This will help.Thanks.

Feb 16, 2012 | 1999 Dodge Stratus

1 Answer

Need to replace heater core on 1997 Chevy Lumina


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.

Dec 23, 2010 | 1997 Chevrolet Lumina

2 Answers

How to replace heater core


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.

Dec 11, 2010 | 1997 Chevrolet Lumina

1 Answer

Help with heater core replacement - what is the easiest way to replace this?


  1. Disconnect the negative battery cable.
  2. Remove the air cleaner and duct assembly.
  3. Drain and recycle the engine coolant.
  4. Disconnect the wiper linkage from the wiper motor.
  5. Detach both heater hoses at the heater core.
  6. Remove the lower center console.
  7. Remove both instrument panel insulators.
  8. Remove the heater outlet module screws, and the heater cover.
  9. Remove the heater core mounting clip screw, and the heater core line clamp screw.
  10. Carefully pull the heater core from the case.
  11. If necessary, remove the foam seals on the heater core module for transfer to the replacement core.
  12. If necessary, remove the heater core line clamp for transfer to the replacement core.
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You must disconnect the wiper linkage to allow clearance for removing the heater core coolant hoses

89b098e.gif
View of the HVAC module—1 is the A/C module, two is the front blower motor (interior mount style)

30224c8.gif
View of the heater core cover and related components

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Exploded view of the heater core case assembly

f5847b9.gif
Schematic of the HVAC Module air flow controls and air path diverter doors

To install:
  1. Installation is the reversal of the removal process. Tighten the mounting screws to 27 inch lbs. (3 Nm).

Sorry but this is the only way to replace it.

Dec 07, 2009 | 1992 Chevrolet Lumina APV

1 Answer

Coolant flow


Is the car running hot. If not pull the lines on the heater core rig up a water hose on the lines to the core and flush it reverse it put the water hose on the other one and flush again

Mar 18, 2009 | 1999 Chevrolet Lumina

1 Answer

1992 lumina smokes out of heater, consumes more gas


your heater core has probably sprung a leak.does the smoke smell kinda sweet?....check the floor in the front where the floor mats are for moisture or even puddles of antifreeze.(the replacement of a heater core can be very expensive as the entire dash usually needs to be removed to access the heater core)also look under the engine near the firewall for antifreeze drips.

Dec 29, 2008 | 1992 Chevrolet Lumina

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