Replace Heater Core

[pinball7]

I have a '65 Bonneville with A/C and I need to replace my heater core. Can this be done from from the inside or do I need to take off the fender to get to the nuts from the engine bay side? Anyone have any thoughts? Thanks. Ward.

[Stu Norman]

Get a factory manual.

On the 1963 B Bodies, you have to remove the inner fender to get at a few of the screws holding the heater box to the firewall. You know you're in trouble when you read the manual and step 1 is "Remove the passenger side headlight bezel."



I'm pretty sure the 1965 is similiar. Good luck.

[engineer]

info is also in the old motor or chilton manuals as well.

[64sunfirered]

I replaced the heater core on my `64 Bonneville Convertible approx 12 years ago and everyrthing was accessible from under the dash and the engine compartment. I never had to remove any fenders, inner or outer.

[Larry]

The '65 manual does not mention any fender or inner panel involvement. Just to do the obvious (drain fluid, remove hoses, control cable, vacuum hose, etc.), then:
- "remove six nuts securing heater to air inlet duct assembly"
- "remove heater core and case assembly"
- "remove heater core"