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Home/Hummer/H3/Hummer H3 I (2005-2010)/Repair manual/Automatic HVAC System/Heating, Ventilation, and Air Conditioning: Specifications
Contents Wiring diagrams Section: Automatic HVAC System All sections

Heating, Ventilation, and Air Conditioning: Specifications Hummer H3 I

Automatic HVAC System ~240 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
A/C Compressor Mounting Bolt50 N.m37 lb ft
A/C Refrigerant Pressure Sensor4.8 N.m42 lb in
Air Distributor Duct Mounting Screw1.9 N.m17 lb in
Air Inlet Assembly Mounting Stud4.5 N.m40 lb in
Blower Motor and Fan Assembly Mounting Screw1.9 N.m17 lb in
Blower Motor Relay Bracket Mounting Screw1.9 N.m17 lb in
Blower Motor Resistor Mounting Screw1.9 N.m17 lb in
Compressor Discharge Hose to Condenser Fitting28 N.m21 lb ft
Compressor Suction and Discharge Hose to Compressor33 N.m24 lb ft
Compressor Suction Hose to TXV48 N.m35 lb ft
Evaporator Case Section to Blower Case Section Retaining Screw1.9 N.m17 lb in
Evaporator Tube to Condenser Fitting28 N.m21 lb ft
Floor Air Outlet Mounting Screw1.9 N.m17 lb in
Heater Core Access Cover Screw1.9 N.m17 lb in
Heater Inlet and Outlet Hoses Bracket Bolt25 N.m18 lb ft
Heater/Vent Module Mounting Nut4.5 N.m40 lb in
Heater/Vent Module Mounting Screw4.5 N.m40 lb in
Heater/Vent Module Mounting Stud4.5 N.m40 lb in
Receiver Drier Clamp Screw10 N.m88 lb in

Fastener Tightening Specifications

Refrigerant System Capacities

ApplicationSpecification
MetricEnglish
PAG Oil GM P/N 12378526 (Canadian P/N 88900060)
The Denso service compressor is precharged with 74 ml (2.5 oz.) of PAG oil.
Receiver Dryer Replacement23 ml*0.8 oz.*
*Add the same amount of PAG oil drained from the failed receiver dryer, plus the specified amount.
Condenser Replacement44 ml 11.5 oz. 1
Evaporator Replacement15 ml 10.5 oz. 1
Total System Oil Capacity119 ml4 oz.
Refrigerant Charge0.68 kg1.5 lb

Refrigerant System Capacities

The Heating, Ventilation and Air Conditioning (HVAC) system is divided into 2 separate sections. The first, Heating, Ventilation and Air Conditioning, has all procedures that pertain to a HVAC component or function that is not specifically associated with the manual control system. The second, HVAC Systems - Manual, has all procedures specific to the Manual control system.

Begin the system diagnosis with the Diagnostic System Check - Vehicle .

The Diagnostic System Check will provide the identification of the control modules which command the system.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Review the Description and Operation information to help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the Description and Operation information will also help you determine if the condition described by the customer is normal operation. The HVAC Description and Operation information is divided into

  1. «Air Delivery Description and Operation»(ref-266874-S30572438522007100900000)
  2. «Air Temperature Description and Operation»(ref-266874-S12120851902007100900000)

The Air Delivery Description and Operation contains the following topics

  1. HVAC Control Components
  2. Air Speed
  3. Air Distribution
  4. Recirculation Operation

The Air temperature Description and Operation contains the following topics

  1. HVAC Control Components
  2. Heating and A/C Operation
  3. Engine Coolant
  4. A/C Cycle

More articles — Heating, Ventilation, and Air Conditioning