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An A/C system load on the engine An excessive A/C high side pressure The heat load at the A/C condenser Once engaged, the compressor clutch will be disengaged for the following conditions: The ambient air temperature is less than 4°C (40°F). The throttle position is 100%. The A/C low pressure switch is open. The A/C high side pressure is more than 2957 kPa (429 psi). The A/C low side pressure is less than 151 kPa (22 psi). The engine coolant temperature (ECT) is more than 121°C (250°F). The engine speed is more than 5500 RPM. Transmission shift The PCM detects excessive torque load. The PCM detects insufficient idle quality. The PCM detects a hard launch condition. Engine Coolant Engine coolant is the essential element of the heating system. The thermostat controls the normal Coolant enters the heater core through the inlet heater hose, in a pressurized state. The heater core Auxiliary Coolant Pump (w/HP2) The auxiliary coolant pump circulates coolant through the engine and heater core when HVAC
2008 Chevrolet Silverado 1500 2008 HVAC HVAC - Manual - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
A/C Cycle Refrigerant is the key element in an air conditioning system. R-134a is presently the only EPA The A/C compressor is belt driven and operates when the magnetic clutch is engaged. The Compressed refrigerant enters the condenser in a high temperature, high pressure vapor state. As The condenser is located in front of the radiator for maximum heat transfer. The condenser is The orifice tube is located in the liquid line between the condenser and the evaporator. The Refrigerant exiting the orifice tube flows into the evaporator core in a low pressure, liquid state. The conditioned air is distributed through the HVAC module for passenger comfort. The heat and
2008 Chevrolet Silverado 1500 2008 HVAC HVAC - Manual - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
moisture removed from the passenger compartment will also change form, or condense, and is SPECIAL TOOLS AND EQUIPMENT SPECIAL TOOLS Illustration Tool Number/ Description J 43600 ACR 2000 Air Conditioning Service Center
2008 Chevrolet Silverado 1500 2008 HVAC HVAC - Manual - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2008 BRAKES Hydraulic Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado SPECIFICATIONS FASTENER TIGHTENING SPECIFICATIONS BRAKE COMPONENT SPECIFICATIONS Application Specification Metric English Brake Booster Nuts (Hydraulic) 33 N.m 24 lb ft Brake Booster Nuts (Vacuum) 33 N.m 24 lb ft Brake Booster Pushrod Retainer Bolt 10 N.m 89 lb in Brake Hose Fitting Bolt - Front 40 N.m 30 lb ft Brake Master Cylinder Pressure Sensor 26 N.m 19 lb ft Brake Hose Fitting Bolt - Rear 40 N.m 30 lb ft Brake Pedal Bracket to Dash Panel Bolt 36 N.m 27 lb ft Brake Pedal Pivot Nut 35 N.m 26 lb ft Brake Pipe Fittings 25 N.m 18 lb ft Hose Bracket to Control Arm Bolt 9 N.m 80 lb in Hose Bracket to Frame Bolt - Front 9 N.m 80 lb in Hose Bracket to Frame Bolt - Rear 25 N.m 18 lb ft Hose Bracket to Frame Nut - Rear (JH6, JH7) 25 N.m 18 lb ft Hose Bracket to Rear Axle Bolt 9 N.m 80 lb in Hose Bracket to Steering Knuckle Bolt 9 N.m 80 lb in Hose to Rear Axle Bolt 25 N.m 18 lb ft Master Cylinder Mounting Nuts 33 N.m 24 lb ft Power Brake Booster Hose Fitting - Inlet 33 N.m 24 lb ft Power Brake Booster Hose Fitting - Outlet 33 N.m 24 lb ft Application Specification Metric English Brake Caliper Bleeder Valve - Front 13 N.m 115 lb in Brake Caliper Bleeder Valve - Rear 11 N.m 97 lb in
2008 Chevrolet Silverado 1500 2008 BRAKES Hydraulic Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
2008 Chevrolet Silverado 1500 2008 BRAKES Hydraulic Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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