K 2500 Truck 4WD V8-5.3L VIN T (1999)
5. Install the HVAC module mounting nuts and the screws.
Tighten
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Tighten the mounting screws to 4 N.m (35 lb in)
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Tighten the mounting nuts to 9 N.m (80 lb in)
6. Connect the electrical harnesses and the ground connections.
7. Install the HVAC module drain hose.
8. Install the instrument panel carrier.
9. Install the accumulator.
10. Connect the heater hoses.
11. Connect the negative battery cable.
12. Refill the engine coolant.
13. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.