Originally Posted by JasonW77

I just became a member due to the great information I have found in helping me with repairs to my 98 Blazer. Recently I have been searching for the reason why my A/C is only blowing hot air, after reading many post I decided to look at the blend door actuator. Found the gear was broke, I have now gone to 3 different auto parts stores and the GMC dealership and can not find one that matches to mine.

The actuator was found behind the glove box, like stated in many posts on this forum. My actuator is matches all the other actuators mounting hole locations, but where it mounts onto the blend door shaft is the first problem. All the actuators I have looked at have a bushing that protrudes outside of the housing. One opening a small I.D. bore the other almost "T" shaped. Mine has a straight hole, guessing around 3/4" or so, and smooth. That is slid over the blend door shaft which is knurled or spline. The second issue is my plug in for my actuator has 6 pins and all other that I have looked at seem to have less and the missing pin is in different spots depending on which actuator I looked at.

I'm to the end of the line no one else seems to be able to help me, any information anyone has on what I should be looking for or doing different please let me know. I have a 4 year old that hates the windows down on the 20min drive home and its really warm out now.