2001 Bonneville with 150000 on it. it'* been real cold, and while I get heat, I also smell antifreeze and have a coolant leak. When it warmed up a little, I had moisture freeze on the inside of the front window. I am guessing heatercore?
If so how do you replace? Not supercharged and no climate control.
Jim

if you go on autozone and sign up they give you free repair guides, and im sure it has a good detailed procedure with pics.

I went to AutoZone and their guide suggested I consult the manufacturer'* repair manuals.

works for me, got this from there;

Disconnect the negative battery cable.

Drain the cooling system into a clean container for reuse.

Remove or disconnect the following:

Heater hoses from the heater core

Right sound insulator

All necessary electrical connectors and remove the instrument panel compartment

Temperature valve actuator

Electrical connector and remove the HVAC programmer

Heater core cover-to-heater assembly screws and the cover

Heater core-to-heater assembly screws and the heater core



To install:

Install or connect the following:

Heater core and the heater core-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm)

Heater core cover and the cover-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm)

HVAC programmer and connect the electrical connector

Temperature valve actuator

Instrument panel compartment and connect any necessary electrical connectors

Right sound insulator

Heater hoses to the heater core



Refill the cooling system.

Connect the negative battery cable.

Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.