Heater Core

I have to replace it in the 75, gonna shoot for this weekend. I've never done one before and I know its a pain. Advise or suggestions?

yes I HAVE ONE bring the car to limey I will fix and take it to Tennessee with me and your worries will be over. LOL

NO, bad Limey!

Its a pain take your time .You can break stuff under there remember to disconnect the cable.

When I did mine I had the wheel well off & as a result the battery tray should be removed too. Then you can have easier access with the car safely lifted/supported w/ the wheel off. My $0.02. On the interior side all my stuff was stripped out including the dash so you may have a bit of a struggle in there. You may want to buy a Haynes manual as it explains it in the one I have for Malibu. They're about $20.00 & well worth it. The cable is under the A/C and has a small retainer similar to the ones in the dome light housing. Also LABEL ALL YOUR CONNECTIONS and such as you will be unscrewing/unbolting a bunch of stuff when removing the housing. Be careful & take your time. You should be prepared for about a 6-8 hours for this job. Other than that, no big deal. LOL. Oh...and have both your wrenches & sockets handy.

I've done quite a few including our generation cars. The worst one I ever did was my youngest son's 1980 Sunbird. Had to remove the whole dash to get the heater housing out.

jrb75 wrote:NO, bad Limey!

Well it was worth a try right

Isn't there a bolt at about the 5 or 6 o'clock position on the engine side of the heater box (below the blower) that is virtually impossible to get at without removing the inner fender liner?

i need to do mine in the monte. im gonna do it when i take the interior and the motor out.

OR sell it first and let the next guy do it
i really need to get the caprice running,hate that it is just sitting.if i get my garage than i might just put the monte in the corner and wait till my youngest turns 16 and let him tinker with it.

Thanks for the advise guys....and thanks for telling me how much it's gonna suck,lol. After the freeze plugs disaster, I had a feeling the heater core would have rotted out too. 6-8 hour job for me means 2 days. Ehh, I'll take in account all you guys said and it'll be alright....Thanks again all.

AHHHHHHHHHHHHHHHHH, I finally got it the core assembly and some of dash back together and I heater controls are shot. Before the heater core, I knew my fan wasnt working but turns out, I had a blown fuse AND a box on the back of the unit was destroyed.

Since I have to use words like thinky and what-cha-ma-call-it...The temp and postions controls go into it. After 6 times of figuring out how to get it together, I superglued the box and found a spring that was supposed to be in it on the floorboard after I got it all back in the car...

Do I start with just replacing the entire control unit?

Finding another dash control unit may be your best bet. I sold one last year. Folks parting out gen 3 stuff may have what you need. They are not all the same from '73 to '77, so pick your year when looking for one, and good luck....
BILL

What box on the back got destroyed? Can you post a pic? Pila has the right idea, the whole control unit would be the best bet. They are usually only between $20 to $50 depending on the condition for a good used one.

Jrb...contact me and I'll find one for you. Might even have one laying around. Need to know if you have A/C, though.