Hummer H3. Manual — part 1276

HEATER INLET PIPE REPLACEMENT (LLR)

Fig. 41: Heater Pipe Replacement - Inlet
Courtesy of GENERAL MOTORS CORP.

Heater Inlet Pipe Replacement (LLR)

3. Use J 38185 to release the radiator hose clamp and J 43181 to release the quick

connect. See Special Tools.

1

Heater outlet hose clamp

2

Transmission housing bolts (Qty: 2)

Tighten: 50 N.m (37 lb ft)

3

Heater outlet hose quick connect fitting

4

Heater outlet hose assembly

Callout

Component Name

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

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

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

2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

NOTE:

Refer to Fastener Notice .

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3

HEATER OUTLET PIPE REPLACEMENT (LLR)

Fig. 42: Heater Pipe Replacement - Outlet
Courtesy of GENERAL MOTORS CORP.

Heater Outlet Pipe Replacement (LLR)

3. Remove the heater outlet hose from the heater inlet tube. Refer to Heater Outlet

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

1

Bolt, Heater Inlet Tube
Tip: Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or
equivalent to the threads of the heater inlet tube bolt.

Tighten: 45 N.m (33 lb ft)

2

Tube, Heater Inlet

3

O-ring, Heater Inlet Tube
Tip: Remove and discard O-ring.

Callout

Component Name

NOTE:

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3

AIR INLET ASSEMBLY REPLACEMENT (LEFT HAND DRIVE)

Fig. 43: Air Inlet Assembly Replacement (Left Hand Drive)
Courtesy of GENERAL MOTORS CORP.

Fastener Tightening Specifications: Refer to Fastener Tightening Specifications.

Preliminary Procedure

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

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

2. Remove the generator. Refer to Generator Replacement .

3. Using J 38185 , Hose Clamp Pliers, reposition the hose clamp.

4. Remove the heater inlet hose from the heater outlet fitting.

Refer to Fastener Notice .

1

Heater Outlet Fitting
Tip: Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or
equivalent to the heater outlet hose fitting threads.

Tighten: 45 N.m (33 lb ft)

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3

Air Inlet Assembly Replacement (Left Hand Drive)

AIR INLET ASSEMBLY REPLACEMENT (RIGHT HAND DRIVE)

Callout

Component Name

Preliminary Procedures

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

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

2. Disconnect the recirculation actuator electrical connector.

1

Recirculation Housing Screw (Qty: 4)

Tighten: 1.5 N.m (14 lb in)

NOTE:

Refer to Fastener Notice .

2

Recirculation Housing

3

Recirculation Actuator Screw (Qty: 3)

Tighten: 1.5 N.m (13 lb in)

4

Recirculation Actuator

2007 Hummer H3

2007 HVAC Heating, Ventilation and Air Conditioning - H3