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Old 01-30-2012, 08:20 AM   #1
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Default Heater core replacement

Long story short : Do I need to take out the dash to change the heater core on a 1995 Bonneville?

Won't explain why I'm asking.....
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Old 02-02-2012, 04:55 PM   #2
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You should be able to get to it by removing the glove box. I did it in my 93 and it wasn't too bad...
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Old 02-02-2012, 06:21 PM   #3
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Did you have climate control? I tried to remove as much as I could without removing dash parts and it'* impossible for all I know.

Oh well, at least I changed the fan 2 weeks ago so I have some air circulation preventing fog, I just can't bear with icy rain!
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Old 02-03-2012, 10:55 AM   #4
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Old 02-03-2012, 05:30 PM   #5
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Oh my god, thanks so much for that! You have no idea how grateful I am! Quebec'* a f'kin cold place to lack a heater core in your car during winter!
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Old 02-03-2012, 05:35 PM   #6
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De rien.
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Old 12-02-2013, 09:46 AM   #7
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Hi, This is my first time here and I really need some HELP! I have a 98 Bonneville, and my Heater core gave out. so this is my first of fixing something like this I love working on cars so I was wondering if this is going to be a job for a mechanic or can I do this? Please I need to do this ride I take my daughter to work and .back
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Old 12-02-2013, 10:01 AM   #8
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if you sign up for autozone they give you free repair guides to go by. is it leaking? if just blocked inside they can be saved sometimes with some fittings hooked to the hoses so you can use your garden hose on it
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Old 12-02-2013, 10:11 AM   #9
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The .PDF instructions 2kg4u gave are almost exactly good. There'* a slight difference in disconnecting the heater position motor but all the rest is very good.

Just be careful when you're going to put the new heater back. It'* a hassle to get out, it doesn't get better when going back in and you don want to crush the cooling fins.

Quick pro-tip :

GET A COOLANT CLAMP REMOTE REMOVAL TOOL!!! The supercharged Bonneville'* heater hoses are pretty much unreachable with any tool except that. 30$ on Ebay.

-Dismantle passenger kick panel
-Spot the "vacuum controller?" It has colored tubes going to it and a connector. Disconnect tubes (remove central screw and entire connector, don't remove tube by tube) and wires, remove controller.
-Remove glove box door. Doing so will allow you to fiddle with a long and thin screwdriver to unscrew one of the heater door screws. That'* the part where the .PDF instructions are not exact.
-Remove the two heater box screws (Maybe more, but I think I remember two (you don't forget a shitty job so easily!!))
-Remove heater core
-Put new heater core in using extreme care
-You may want to silicon the heater assembly parts before putting them back in

Installation is reverse operation

Good luck. Snap pics of what you can't do if you hit a wall, I'll help you. I know how shitty of a job it is...
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Old 12-02-2013, 10:13 AM   #10
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Quote:
Originally Posted by stegarsla View Post
There'* a slight difference in disconnecting the heater position motor but all the rest is very good.
Difference in removing heater door* (Glove box removal to access upper screw)
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