TrailBlazer 2WD L6-4.2L VIN S (2003)
4. Install the screws to the HVAC module assembly.
Tighten
Tighten the screws to 1.9 N.m (17 lb in).
5. Install the HVAC module assembly.
6. Recalibrate the recirculation actuator on vehicles equipped with automatic climate control (C68), See: Testing and Inspection/Programming and
Relearning
