it is possible to remove it from under the dash but difficult. Service manual says remove the dash. get more info from bonnevilleclub forum
where is the heater core for a 1992 bonniville
I would like to have a dimgram to show me how to put the hater core out and in on my 94 Pontiac Bonneville
Begin by training the water from your 1997 Pontiac Bonneville cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
How to change a heater core on a 1997 Pontiac grand am
This really is a pain The heater core is in a tray like thing under the dash in the centre of the dash It is a real pain to get this out without breaking it and then without damaging the heater core. You really really need a manual with pictures to do this correctly
it is possible to remove it from under the dash but very difficult. try bonnevilleclub dot com and search the forum for info.
You don`t want to go there !( Trust me.) Take it to a radiator shop.
remove panel cover in middle of car under dash where the heater core hoses are at that go through the firewall under the hood, this is where the heater core will be located at inside the car start removing screws, until covers come off remove the hoses first though i have to replace the heater core in a 93 Bonneville tomorrow good luck
Where is the heater core for a 2002 pontiac montana
To change the heater core on a Pontiac Aztek, locate the heater core on the firewall, passenger side of the vehicle. Remove bolts on the firewall and the clamps on the hoses. Take out the old heater core and replace with new. Tighten bolts and hose clamps. Then check to make sure the radiator is full of antifreeze.
Remove the water supply lines to your 1985 Pontiac Trans Am heater core. Remove the heater core retaining bolts. The heater core will come out. Reverse the process to install your new heater core.
where is the heater core at