HVAC Actuators

[jdclemons]

I'm having problems with my defrost door and blend door. Does anybody know if the actuators are the same. I have a 1987 model and i can't find nothing for that model. I found one for a 1986 model but the are several on the heater box. I really dont know if they all are the same or are they different. Could anyone help me with and info. Thanks.

[motornut]

different ones,some pics

[jdclemons]

Thanks for those pictures that is really helpful. Question, where do i purchase the actuators for a 1987 c/r10. I can find one for a 1986 or lower but nothing for a 1987. Thanks Jason.

[motornut]

gee i would have thought here
http://www.lmctruck.com/icatalog/cc/full.aspx?Page=61
but no,can't be much difference 86-87 for the box where are you looking?
one for the foot vent here
http://www.lmctruck.com/icatalog/csb/full.aspx?Page=110

[tucsonjwt]

I still have one new actuator I never used for my 83 C20. Can you post the GM/Delco part number and I can tell you if I have at least one of them. Check Rock Auto online catalog to help with the Delco part number. I have the actuator that goes on the heater box.

[jdclemons]

I see the blend door actuator on rock auto for an 1986 model and that the only one i see. Mine stays in defrost all the time so i would love to change the blend door and the defrost one. Does anyone know if all the acutators are the same.

[motornut]

well you can check them....
some washer size hose should work,apply suction by mouth if want
see if things move, other things break to keep it from moving too