Originally Posted by 89BonnieSE89
Your blower motor may be clogged or needs to be replaced. Its easy to do, the blower motor on Bonnevilles are located on the firewall at the back of the engine compartment.
The clog wouldn't be in the blower motor; if it'* spinning at all, I would leave it alone. However, the A/C evaporator and/or the heater core can get clogged (especially if the evaporator has sprung a refrigerant leak and got the fins all wet with oil); you need to open up the evaporator case and get in there to clean out the goop.
What control panel do you have? If it'* the electronic one, is it indicating that it'* sending air to the dash vents but nothing is coming out?
If it'* _not_ the electronic one, are you getting air out of the _wrong_ outlets? That is, do you dial up VENT or A/C but get air out of the heater ducts (on the floor) or windshield defrosters instead? If so, you may have a vacuum leak, and the duct servo motors are not operating as a result.
P.*. What year and model are we talking about?