How do you change the heater core in a 1996 Monte Carlo Z34.?

Answer 1

Remove all plastic molding under the dash between the console where your auto gear shift is and toward the firewall. You will often have to lay on the seat of floor in an upside down position to be able to see and remove the screws. I think I used a 5.5 mm socket, sometimes attached to the ratchet and sometimes using the little metric screw driver handle thingy?

Once you have taken off the last large piece of plastic venting, the heater core is revealed. The 96' Monte Carlo Z34 engine space is so tight that you really can barely see the heater core's pipes on the engine side of the firewall, let alone stick man-sized hands down in there. In my case, I stopped at this point as my pal and I discovered that my core still had flow thru it.

If your pipes look good, don't bother putting in the new ones. You can't access the engine side of them anyway without taking off a ton of stuff or....tilting the motor? I would drained all coolant to keep it from draining onto the floor of the car. Then I would have released the little clamps on each pipe at the point where it connects to the core, then unscrewed the pipe connections and voila! Keep track of the screws, put your new core in, replace all that molding (only 4 pieces) and you are done dude.