I have a 1984 buick lesabre v8 and im getting no heat?

SOURCE: heater core replacement

Actually if your handy the heater core on this car is pretty easy..  passengers side under the dash... but here is a link to some sites that will probably help  
from .... one of the wikki sites.. LOL cant remember which now

The heater core is located under the dash, in the center above the "hump". The container holding the core looks like a black plastic box. Remove the ash tray for easier access. You may have to also remove some other covers under the dash. First drain the radiator. Then you have to disconnect the hoses. There are two hoses connected to nipples of the heater core that are thru the center of the firewall. This has to be done from underneath the car while raised. I also had to unbolt a frame support to get to the hose clamps (I have big hands; you may be able to reach them without unbolting it). Remove the screws that hold on the cover to the heater core. You should be able to get the old one out now. Just go in reverse order to put it back together.

also this link is very handy they have a pretty complete collection for MANY vehicles
http://www.autozone.com/shopping/repairLanding.htm

SOURCE: 1996 buick roadmaster keeps overheating:

A shotgun approach to repairs can really rack up the bills.

If your symptoms are loss of water and you have replaced the thermostat, you more than likely have an issue with steam. And that steam more than often comes from a bad head gasket. Most head gasket gasket failures seem to be confined to the water side initially, but let it go on bigger damage will occur.
You can buy a litmus test strip to dunk in the coolant. It will indicate if there are exhaust residuals in the water and thus a gasket failure.

However it may just be something simple, given that you have just about replaced everything:

have you given the radiator a good hosing inside and out?
is the radiator fan running when it should be?

SOURCE: where is the heater core, on a 1986 Buick Regal??

under the dash on the passenger side

SOURCE: 2000 buick lesabre - water pump replacement

first disconnect the battery then check how the serpentine belt is lined up so u can take it off and put back on. Then the pump should be on the side of the motor with 9or12 bolts there could be more! after taking out take razorblad and skrap the old gasket clean wipe of then put new gasket and pump back on dont over tighten the screws cuase the pump my be aluminum.

Alan Timperley

• 91 Answers
• Posted on May 25, 2009

SOURCE: 1994 buick lesabre heater core removal

The heater core is located under the dash, in the center. The container holding the core looks like a black plastic box. Remove the ash tray for easier access. You may have to also remove some other covers under the dash. You must first drain the radiator then you have to disconnect the hoses. There are two hoses connected to nipples of the heater core that go thru the center of the firewall. Remove the screws that hold on the cover to the heater core. Then you should be able to get the old one out. There might be a couple of other minor steps but I'm sure you can figure them out. For re-installation just go in reverse order to put it all back together.