It is located under the Engine Compartment Multi-use Relay Center on the firewall.
Blower motor is located on the firewall behind the engine.
blower motor module
what is the wiring position for the ignition module on a 1990 Buick Park Avenue?
The problem is most likely a faulty blower control module.
about 6" from blower motor "towards pass.side"has a four plug and two plug connection on it
it is behind the glove box
Where can I locate the "Lamp Control Module" on a 1994 Buick Park Avenue
FUSE!
look on firewall on passinger side
the quad driver module is a component of the ECM. you must replace ECM.
On my 91 its behind the engine in the center of the firewall
Follow the wires from the blower motor back toward the firewall. they attach to this module which is actually inside the vent. two screws and you can pull it out. easier if the blower is taken off first.