Hummer H3. Manual — part 1273

HVAC MODULE ASSEMBLY REPLACEMENT (LEFT HAND DRIVE)

1. Remove the HVAC module assembly. Refer to HVAC Module Assembly

Replacement (Left Hand Drive) or HVAC Module Assembly Replacement
(Right Hand Drive).

2. Remove the blower motor. Refer to Blower Motor Replacement (Left Hand

Drive) or Blower Motor Replacement (Right Hand Drive).

Rear Floor Air Outlet Duct Screw

Tighten: 1.6 N.m (14 lb in)

NOTE:

Refer to Fastener Notice .

Rear Floor Air Outlet Duct

A/C Evaporator Case Seal

Lower A/C Evaporator Case Screw (Qty: 11)

Tighten: 1.6 N.m (14 lb in)

Lower A/C Evaporator Case

Blower Motor Housing Baffle

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3

Fig. 33: HVAC Module Assembly Replacement (Left Hand Drive)
Courtesy of GENERAL MOTORS CORP.

HVAC Module Assembly Replacement (Left Hand Drive)

Callout

Component Name

Preliminary Procedures

1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static

Fill) or Cooling System Draining and Filling (Vac-N-Fill) .

2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

3. Remove the evaporator tube from the thermal expansion valve. Refer to Evaporator

Tube Replacement (Left Hand Drive) or Evaporator Tube Replacement (Right
Hand Drive).

4. Remove the heater inlet hose from the heater core. Refer to Heater Inlet Hose

Replacement (LLR-Left Hand Drive) or Heater Inlet Hose Replacement (Right
Hand Drive).

5. Remove the heater outlet hose from the heater core. Refer to Heater Outlet Hose

Replacement (LLR-Left Hand Drive) or Heater Outlet Hose Replacement
(Right Hand Drive).

6. Remove center console. Refer to Console Replacement (Left Hand Drive) or

Console Replacement (Right Hand Drive) .

7. Remove center rear floor air duct. Refer to Rear Floor Air Outlet Replacement

(Left Hand Drive) or Rear Floor Air Outlet Replacement (Right Hand Drive -
Left Side).

8. Remove the instrument panel carrier. Refer to Instrument Panel Carrier

Replacement (Left Hand Drive) or Instrument Panel Carrier Replacement
(Right Hand Drive) .

9. Disconnect the HVAC module assembly electrical connectors.

HVAC Module Assembly Nut

Tip: Tighten the nuts in sequence.

Tighten: 9 N.m (80 lb in)

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3

HVAC MODULE ASSEMBLY REPLACEMENT (RIGHT HAND DRIVE)

Fig. 34: HVAC Module Assembly Replacement (Right Hand Drive)
Courtesy of GENERAL MOTORS CORP.

HVAC Module Assembly Replacement (Right Hand Drive)

HVAC Assembly Module