98 Buick LeSaber Limited the fan will not come on after you have stoped the car

This is what I could find:

Disconnect the negative battery cable.
If necessary, tag and disconnect the number 2, 4 and 6 spark plug wires from the ignition coil and move the coil out of the way.
For 1993-99 vehicles, remove the nuts and cross brace bar.
Detach the electrical connections from the blower motor.
Disconnect the cooling tube from the blower motor.
Unfasten the screws securing the blower motor to the blower module assembly.
Remove the blower motor and fan assembly from the module.
If necessary, unfasten the nut attaching the fan to the blower motor shaft, then pull the fan from the blower motor.
If the fan was removed from the motor, position the fan on the shaft, then install the retaining nut. Tighten the nut to 12 inch lbs. (1.4 Nm).
Position the blower motor and fan assembly to the module, then install the retaining screws. Tighten to 5 inch lbs. (0.6 Nm).
Connect the cooling tube to the blower motor.
Attach the electrical connector to the blower motor.
On 1993-98 vehicles, install the cross brace bar and retaining nuts. Tighten the nuts to 18 ft. lbs. (25 Nm).
If removed, install the coil and connect the spark plug wires, as tagged during removal.
Connect the negative battery cable.

(AZ.COM)