Contents Wiring diagrams Section: Automatic HVAC System All sections

Heating, Ventilation, and Air Conditioning: Specifications Chevrolet Silverado Classic 1500 HD

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
A/C High Pressure Recirculation Switch6 N.m53 lb in
A/C Low Pressure Switch6 N.m53 lb in
A/C Refrigerant Filter Retaining Nuts15 N.m11 lb ft
Accumulator Bracket Nut9 N.m80 lb in
Accumulator Clamp Bolt10 N.m88 lb in
Air Distribution Duct Screws1.6 N.m14 lb in
Air Outlet Mounting Screw1.6 N.m14 lb in
Blower Motor Insulating Cover Screw1.6 N.m14 lb in
Blower Motor Relay/Resistor Screw1.6 N.m14 lb in
Compressor Bracket Mounting Bolts50 N.m37 lb ft
Compressor Clutch Coil Connector Retaining Bracket Screw9 N.m80 lb in
Compressor Clutch Plate Retaining Bolt18 N.m13 lb ft
Compressor Discharge Hose Nut at Connector16 N.m12 lb ft
Compressor Hose Bolt at Compressor (L18 Harrison)34 N.m25 lb ft
Compressor Hose Bolt at Compressor (L35 Harrison)34 N.m25 lb ft
Compressor Hose Bolt at Compressor (LB7 Harrison)34 N.m25 lb ft
Compressor Mounting Bolts (L18 Harrison)50 N.m37 lb ft
Compressor Mounting Bolts (L35 Harrison)50 N.m37 lb ft
Compressor Mounting Bolts (LB7 Harrison)50 N.m37 lb ft
Compressor Mounting Bolts (LB7 Denso)50 N.m37 lb ft
Compressor Mounting Bolts (LR4, LM7, LQ4 Denso)50 N.m37 lb ft
Compressor Suction/Discharge Hose Bolt34 N.m25 lb ft
Compressor Suction Hose Nut at Accumulator16 N.m12 lb ft
Compressor Suction Hose to Accumulator41 N.m30 lb ft
Condenser Upper Insulator Retainer Bolts2.4 N.m21 lb in
Discharge Hose Mounting Bolt (LB7 Denso)16 N.m12 lb ft
Discharge Hose Mounting Bolt (LR4, LM7, LQ4 Denso)16 N.m12 lb ft
Evaporator Tube Fitting at Orifice25 N.m18 lb ft
Evaporator Tube Nut at Condenser16 N.m12 lb ft
Evaporator Tube Nut at Evaporator16 N.m12 lb ft
Filter Access Door Screw1.6 N.m14 lb in
Floor Air Outlet Duct Screw1.6 N.m14 lb in
Heater Core Cover Screws1.6 N.m14 lb in
Heater Hose Mounting Bolt (L35)25 N.m18 lb ft
Heater Hose Outlet Mounting Nut and Bolt25 N.m18 lb ft
Heater/Ventilation Module Mounting Nuts9 N.m80 lb in
Heater/Ventilation Module Mounting Screws4 N.m35 lb in
Heater Ventilation Module Screws1.6 N.m14 lb in
Insulator Retainers and Bolts2.4 N.m21 lb in
Pressure Relief Valve9 N.m80 lb in
Suction Hose Mounting Bolt (LB7 Denso)16 N.m12 lb ft
Suction Hose Mounting Bolt (LR4, LM7, LQ4 Denso)16 N.m12 lb ft

Fastener Tightening Specifications

Refrigerant System Capacities

ApplicationSpecification
MetricEnglish
PAG Oil GM P/N 12378526 for United States PAG Oil GM P/N 88900060 for Canada
Accumulator ReplacementMl*Oz*
*Add 60 ml (2 oz) of PAG oil, plus the equal amount of oil drained from the accumulator.
Compressor Replacement60 ml2 oz
The Denso replacement compressor is precharged with 237 ml (8.0 oz) of PAG oil.
Condenser Replacement30 ml1 oz
Evaporator Replacement90 ml3 oz
If more than the specified amount of PAG oil was drained from a component, add the equal amount drained.
Total System PAG Oil Capacity210 ml7.1 oz
R-134a
Refrigerant Charge0.7 kg1.6 lb

Refrigerant System Capacities