| ID | Status | Date | Year | Make | Model | Transmission Type | A/C Controls | Public/Private |
|---|---|---|---|---|---|---|---|---|
| #12636 | Closed | 2004 | Chevy | Trailblazer | public |
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I had battery changed on 2004 chevy trailblazer lt with auto control ac/heater. I had to clean throttle body. I did that and now ac/heat vents on front won’t work and other vents only come out weak. How do I recalibrate hvac actuator? Its coming out of floor vents but not on dash. |
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You can try recalibrating by removing the HVAC B fuse in the fuse box under the rear seat. Leave the fuse out for one full minute. Install the removed fuse and start the engine. Allow the engine to run for at least one full minute. Do Not Touch anything. After the engine has ran for one minute turn the ignition off for at least 10 seconds but no more than 30 seconds. Restart the engine and check the a/c operation. If it does not correct after two or three tries the actuator will need to be replaced. |