* Transfer Case: This is probably the most common vacuum actuator. It's usually located near the transfer case itself, often on the passenger side, underneath the vehicle. It might be connected to a linkage that goes to the transfer case shifter.
* Door Locks: Vacuum actuators can control the door locks. These would be located within each door.
* 4WD System Components: Other components related to the 4WD system (beyond the transfer case) might also use vacuum actuators, but their location would vary.
* Climate Control: While less common, some climate control components (like blend doors) *could* be vacuum-actuated. These would be inside the dashboard.
To find the specific vacuum actuator you're looking for, you'll need to know which system is malfunctioning. For instance, if your 4WD isn't engaging properly, you'll want to look near the transfer case. If a door lock is failing, check inside that door. Consult your owner's manual or a repair manual specific to your 1995 Chevy Blazer for diagrams and locations.
