2005 chevy colorado the fan blower will not let me select 123 have changed the control head and and have no positive result at the blower resister ?

I had this same problem on my 2006 colorado. when i purchased a new resistor and went to replace it, I decided to check the resistance of each position on the old one with the resistance on the new one. they were both the same. then I decided to look at the harness. I was told that it needed to be replaced as well but I decided to try just the resistor. The harness had one of the connections in the plastic connector that looked like it had over heated. (IE browned char like look) after installing the new resistor, it ran ok for about 2 days then started acting up again. Then I tried my own solution. I pulled the harness loose from the resistor and with the ignition and fan switch off took a paper clip and manuevered it under the connection with the charring and slightly bent the metal connector out. when complete, the adjusted connector appeared to be a tad too far out compared to the other connectors in the plastic. then I reconnected it to the resistor and haven't had a problem since. I did, just out of curiosity switch out the new resistor with the old one and it too also works with no problems. Of course, the dealership will not take back electreical parts that have been placed in use. This should have been a chevy recall but apparently they don't care about anything but the initial sale of their products. I sent an email to GM and got to not response.

Does fan blow if you hot wire it??