* Blend Door Actuator: This controls the temperature of the air coming from the vents. It's usually located inside the dashboard, behind the glove box or on the passenger side of the HVAC system. Accessing it often requires partial dashboard disassembly.
* Mode Door Actuator: This controls where the air is directed (defrost, vents, floor). Similar to the blend door actuator, it's usually inside the dashboard, requiring disassembly to reach it.
* 4WD Actuator (Transfer Case Actuator): If your Blazer is 4WD, this actuator controls the engagement of the transfer case. This is located under the vehicle, usually near the transfer case itself. It might be difficult to access without jacking up the vehicle.
* Other Actuators: There might be other smaller actuators for things like seat controls or other accessories, depending on the trim level and options.
To find the specific actuator you need, you'll need to specify what system it controls. For example, "Where is the blend door actuator for a 1998 Chevy Blazer?" Then, a more precise answer, possibly including diagrams or repair guides, can be provided. A repair manual specific to your year and model Blazer will be the most helpful resource for pinpointing its location.
