TrailBlazer 4WD V8-5.3L VIN M (2006)
4. Install the retaining bolts (5) to the HVAC module-auxiliary.
5. Tighten the HVAC module-auxiliary retaining bolts (5).
Tighten the bolts to 10 N.m (88 lb in).
NOTE: Refer to Fastener Notice in Service Precautions.
6. Install the retaining nuts (4) to the HVAC module-auxiliary (1) under the vehicle.
Tighten the nuts to 10 N.m (88 lb in).
7. Install the right rear quarter trim.