The fan blower for a 1993 Lexus LS400 is located inside the cabin, typically behind the dashboard on the passenger side. To access it, you may need to remove the glove compartment and some dashboard panels. The blower motor itself is secured to the HVAC housing and is responsible for circulating air through the vehicle's heating and air conditioning system.
I have a 1993 Chevy lumina van that has heat but doesn't have a fan how do I fix the fan?
Remove the wiring harness from the back of your 1993 Chevrolet Camaro blower motor. Remove the blower motor retaining nuts. Remove the fan from the front of the blower motor. Reverse the process to install the new blower motor.
To change the fan switch on a 1990 Lexus LS400, first disconnect the negative battery terminal to ensure safety. Locate the fan switch, which is typically found near the radiator or on the engine block, and remove any necessary components obstructing access. Unplug the electrical connector from the old switch, unscrew it, and replace it with the new switch. Reconnect the electrical connector, reassemble any removed parts, and reconnect the battery.
Resistor pack on blower motor? Fan switch? Low speed relay?
If you remove the breather box from in front of the blower motor you can reach the three retainers.
Remove the wiring harness from the back of the blower motor in your 1993 GMC 1500. Remove the blower motor retaining bolts. If the new blower motor does not have the fan attached to and you will need to remove the fan from the old blower motor. Reverse the process to install the new blower motor.
see link below
At the firewall on the passenger side
In the fan box behind the glove box.
You will have to replace it. The bearings are worn out in the blower motor.
You have a bad blower motor resister..........
Open hood . Disconnect blower module located near blower fan. Disconnect, if blower shuts off, repalce module