Does the dash have to be removed to replace the heater core on 95 buick century or can just the glove box be removed?

remove knee bolster on the passenger side and find the ecm under the dash behind the glove box. some of these you can remove the inner glove box to give you more room. it is held in a bracket that you will have drop down and unbolt the holding fasteners that hold the ecm in the bracket then disconnect the plug connectors to the ecm.

Your Buick has a heater core o heat the air sent from the air conditioning unit before it is blown outwards. A malfunctioning heater core may cause the coolant to leak on the inside of the car, or It may even lead to smoke blowing out from the air vents.
Replacing the heater core will solve the problem, and to do so, you require a socket wrench and a Philips head screwdriver. Thi process is straight forward, but it may take up to an hour to finish
1. Pop open the hood, lift it, and then disconnect the bettery by using a socket wrench
2. On the passenger side, unwind the four screws from the kick panel which is underneath the glove box
3. Disconnect and remove the kick panel
4. Open the glove box, remove all contents within, and then unmounts the whole glove box by removing the screws
5. Pull down the flange, and you can access the heater core. To open it up - remove the two bolts from heater core cover and lift it off
6. Disconnect the core's wiring harness, then remove the four screws that are holding it in by using a Philips head screwdriver. Now you can easily remove the lousy heater core
7. Install the new heater core, then - reconnect wiring, screws, heater core case, and finally, the bolts
8. Reattach the kick panel and then glove box, and you are done

you will need to remove most of if not all of the dash to get to the heater core that is located on the passenger side behind the glove box. the problem is that it's inside the black heater box. some older models have it to where you can open a couple latches and there it is not sure if yours is like that or not thats why i say remove the dash

Some heater cores are quite complex in removing. They are sometimes buried behind the dash board. Often other parts of the dash will also have to come out (Glove compartment) to reach it. You have to locate and remove the heater box under the dash (usually on the passenger side) after disconnecting the heater hoses under the hood by the firewall. The heater box will have a wire harness and/or cables connected to it that will have to be disconnected before the box will drop out. Once the heater box is out...remove the cover and heater core and reinstall in the reverse order that it was removed.

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.

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.

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.

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.

UNDER THE DASH IN THE HEATER BOX

Hi there,
Well the heater core is located under the dash on the passenger side, usually cased in a plastic housing.You may have to remove the glove box in order to have access to. And when you get to the point, when you are disconnecting the coolant lines and remove the core you use some clothes to protect the carpet as fluid may drip. Post comments for further help or information........
Good Luck!!

Thanks for using FixYa!!

Hi there,

Well the heater core is located under the dash on the passenger side, usually cased in a plastic housing.You may have to remove the glove box in order to have access to. Post comments for further help or information........
Good Luck!!

Thanks for using FixYa!!

Hi there,

Well the heater core is located under the dash on the passenger side, usually cased in a plastic housing.You may have to remove the glove box in order to have access to. And when you get to the point, when you are disconnecting the coolant lines and remove the core you use some clothes to protect the carpet as fluid may drip. Post comments for further help or information........
Good Luck!!

Thanks for using FixYa!!