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I need to replace my heater core in a 1991 chevy lumina

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Go ahead. And while you're at it, this listing is for air conditioners. You'd be better off if you told the heater people or the car people that you need to replace your heater core.

Posted on Jul 24, 2008

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Water on passenger side floorboard on a 1991 chevy lumina


Either you have bad weather stripping in one of the doors, or a bad heater core. Check all the stripping around the doors, and windshield. Does the car have heat?

Jan 21, 2017 | 1991 Chevrolet Lumina

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1991 chevy c1500 heater core


Yes. It is the heater core. It will have to be replaced

Feb 13, 2014 | 1991 Chevrolet K1500

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I have an 1992 chevy lumina antifreeze is leaking from the bottom of the firewall


You have a coolant leak, either in the heater core, or from the heater hose that feeds heated coolant to the core.

Aug 31, 2011 | 1992 Chevrolet Lumina

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

1 Answer

How do you replace a fuel pump in a 1991 Chevy Lumina euro 3.1?


Had fule pump and filter replaced, 3 months later, same problem, car will not start, replaced Relay Switch, still wont work. any suggestions?

Feb 25, 2010 | 1991 Chevrolet Lumina

1 Answer

I changed the water pump thermostat and heater core and still no heat what else can be wrong 1996 chevy lumina car


1)Air trapped in system
2)plugged radiator
3)collapsed heater hoses while engine is running
4) heater control valve
5) blend door motor for hot/cold (VERY COMMON)

Jan 30, 2010 | 1996 Chevrolet Lumina Mini

1 Answer

Replacing a heater core


YOU DO NOT NEED TO REMOVE THE DASH BOARD. IT WILL BE BEHIND THE GLOVE BOX. LOOK UNDERNEATH THE DASH AND YOU WILL NEED TO REMOVE A PANEL TO GAIN ACCESS TO THE HEATER CORE. THE PANEL WILL BE ABOVE THE PASSENGERS FEET ON THE FIREWALL.

Jan 24, 2009 | 1991 Chevrolet Cavalier

2 Answers

Smoke coming in the vents when heater is turned on


sounds like heater core you will have to pull dash up and remove heater assembly to replace heater core it is a big job not for the faint of heart good luck

Oct 04, 2008 | 1991 Chevrolet C/K 2500

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