Actuators

[thrashman1973]

I own a 1989 GMC sierra SLE K1500
I currently have the dash out and decided to replace all three actuators the Mode selector actuator,, the heat blend door anactuat, and the air inlet actuator. All three look the same, Can anybody verify if these are three different actuators or if they all do the exact same thing thanks advance.

 

[pressureangle]

The one behind the A/C box is different, if I recall. While you have it out, replace the stock weak gear in that one with the aftermarket strong one-

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[GoToGuy]

In the parts when you look them up, two of modules are the same, the third is unique to its position. Your verification is when you look in the parts listing.