Might be helpful to know if this is the V6 or V8 Manual for further troubleshooting or common knowledge of issues specific to the different transmissions.
Per the service manual, you can apply a 15-20psi vacuum to the brake fluid reservoir and hold it for 1min then quickly release the pressure. Check fluid in reservoir to ensure at MAX marking. Then depress and release the clutch pedal 10-12 times. Repeat procedure two additional times or until the pedal feel is consistent and positive at the top of the travel.
Another thing I have done that helps is to get the driver's side wheel up higher than the rest of the car and do the above procedure. Usually was able to do it by driving the front left wheel up on a curb or paved ramp.