TrailBlazer 2WD L6-4.2L VIN S (2003)
1. Position the air outlet face down at the housing opening.
2. Position the right side of the air outlet below the housing retaining pin.
3. Seat the right side of the air outlet to the housing retaining pin by lifting upward.
4. Seat the left side of the air outlet to the housing retaining pin.
5. Rotate the air outlet upward past the detent position.
6. Adjust the air outlet to the original position.