Removing the heater control switch 2004 Pontiac Grand Prix

Procedure for the control panel pasted below. I don't see a separate blower switch, so you might have to replace the entire control panel. Before doing that, I recommend you browse this post:
http://www.fixya.com/cars/r6234839-doesn_t_heater_or_air_conditioner_blow and let me know if you have questions.

1. Disconnect the negative battery cable.
2. Remove the instrument cluster trim plate, using the following as a guide:
   1. Remove the instrument panel access hole covers from the instrument panel using a small flat-bladed tool. Remove the screws from each end of the instrument panel cluster trim plate.
   2. Remove the screws from the lower edge of the right lower instrument panel trim plate.
   3. Open the instrument panel compartment door.
   4. Pull the right lower instrument panel trim plate from the instrument panel.
   5. Pull steering column tilt level and tilt the steering column to the lowest position.
   6. Grasp the instrument panel cluster trim plate at the right edge, slowly pull an working from left to right, release the retainer clips. Lift the trim panel from the vehicle.
   
   
3. Remove the screws holding the heater & A/C control panel to the instrument panel and gently pull the assembly from the instrument panel. Detach the electrical connector(s) from the back of the panel. Some models may have a vacuum line connection that must also be removed.
4. Installation is the reverse of the removal process. Use care to make sure the retaining clips are properly seated and all screws are in place. This helps avoid rattles and squeaks later.

CAUTION Vehicles covered by this manual are equipped with a Supplemental Inflatable Restraint (SIR) system, which uses an air bag. Whenever working near any of the SIR components, such as air bag module, steering column and instrument panel, disable the SIR.

Fig. Instrument panel accessory trim plate removal-Pontiac shown, others similar
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Fig. Heater & A/C control panel removal. Top: Standard system; Bottom: Automatic System-Pontiac shown, others similar