TrailBlazer 2WD L6-4.2L VIN S (2003)
8. Connect the heater hoses to the heater core.
9. Install the nuts to the HVAC module studs.
Tighten
Tighten the nuts to .....10 N.m (89 lb in).
10. Remove the cap or tape from the A/C lines.
11. Install the new O-ring seals.
12. Install the nuts (3) to the evaporator core studs.
Tighten
Tighten the nuts to .....20 N.m (15 lb ft).
13. Lower the vehicle.
14. Fill the cooling system. Refer to Draining and Filling Cooling System (Body Vin Code 6)Draining and Filling Cooling System (Body Vin Code 3)
in Cooling System.
15. Evacuate and charge the system.
16. Leak test the fitting of the component using the J 39400-A.
