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Heating, Ventilation, and Air Conditioning: Specifications Buick LaCrosse II facelift

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
A/C Compressor and Condenser Hose Bolt20 N.m15 lb ft
A/C Compressor and Condenser Hose Nut at Condenser20 N.m15 lb ft
A/C Compressor and Condenser Hose Nut at EVAP Line22 N.m16 lb ft
A/C Compressor Bolt58 N.m43 lb ft
A/C Compressor Bracket Bolts22 N.m16 lb ft
A/C Compressor Nut22 N.m16 lb ft
A/C Compressor Stud22 N.m16 lb ft
A/C Compressor Hose Fastener16 N.m12 lb ft
A/C Compressor Tube Assembly Nut22 N.m16 lb ft
A/C Condenser Hose Fasteners15 N.m11 lb ft
A/C Evaporator Hose Fastener20 N.m15 lb ft
A/C Evaporator Hose Stud Bolt15 N.m11 lb ft
A/C Evaporator Thermal Expansion Valve Fastener7 N.m62 lb in
A/C Refrigerant Pressure Sensor7.4 N.m66.4 lb in
Compressor Drain Plug8 N.m70 lb in
Compressor Pressure Relief Valve8 N.m70 lb in
Heater Core Bracket Fasteners1.4 N.m12.4 lb in
Instrument Panel Outer Air Outlet Fasteners2 N.m18 lb in
Thermal Expansion Valve Bolt15 N.m11 lb ft

Fastener Tightening Specifications

Compressor Specifications

DescriptionSpecification
Displacement (cc/rev)163.2
Bore x Stroke (mm)31.6 x 29.7
Number of Cylinder7
Max. Allowable Speed (RPM)8000
Clutch - StandardNo Clutch

Compressor Specifications

Refrigerant System Specifications

ApplicationSpecification
MetricEnglish
Abrupt Refrigerant Loss60 ml 12.0 oz 1
PAG Oil GM P/N 12378526 for United States PAG Oil GM P/N 88900060 for Canada
Compressor Replacement
NOTE: Compressor failure can occur if the oil removed during refrigerant recovery is not replaced. The service compressor is shipped with 74 ml 2 (2.5 oz 2 ) or 40 ml 2 (1.4 oz 2 ) of PAG oil. Refer to the oil balance instructions for information regarding the specific service compressor oil charge.
Condenser Replacement30 ml 21.0 oz 2
Evaporator Replacement90 ml 23.0 oz 2
Any Line Set (Hose/Tube or Tube Assembly) Replacement30 ml 21.0 oz 2
Total System PAG Oil Capacity110.0 ml3.7 oz
R-134a
Refrigerant Charge -LAF/LEA/LF1/LLT/LUK/LFX0.68 kg1.50 lb
Refrigerant Charge - LHU0.60 kg1.30 lb
1 Abrupt refrigerant loss due to large leak, hose rupture, collision, or pressure relief valve opening. Conditions that allow the refrigerant to seep or bleed off over time do not cause this oil loss. Upon replacement of a component that caused a large refrigerant loss, also add the required amount of oil for the particular component. 2 If more than the specified amount of PAG oil was drained from a component, add the amount drained.
NOTE
Compressor failure can occur if the oil removed during refrigerant recovery is not replaced.

Refrigerant System Specifications