Subject Page - GMC G Service Manual

1B-2 AIR CONDITIONING
SUBJECT
Orifice (Expansion Tube) Replacement...............................................................................................................1B-38
Defroster Duct and Heater Core Replacement...................................................................................................1B-38
Actuator - Plenum Side Vent Replacement......................................................................................................1B-39
Plenum Valve Replacement.................................................................................................................................. 1B-41
Control Assembly Replacement.......................................................................................................................... 1B-42
Temperature Door Cable Adjustment................................................................................................................. 1B-42
Blower Switch Replacement................................................................................................................................ 1B-42
Vacuum Tank Replacement.................................................................................................................................. 1B-42
Blower Motor Resistor Replacement...................................................................................................................1B-43
Blower Motor Relay Replacement....................................................................................................................... 1B-43
Fuse Replacement.................................................................................................................................................1B-43
Vacuum Line Replacement - Engine Compartment........................................................................................ 1B-43
Vacuum Line Replacement - Dash....................................................................................................................1B-45
Refrigerant-12 Hose Replacement....................................................................................................................... 1B-45
Rear Interior Roof Mounted System - Suburban................................................................................................ 1B-47
Rear Duct Replacement........................................................................................................................................ 1B-47
Blower Motor Resistor Replacement...................................................................................................................1 B-47
Blower Motor Assembly Replacement.................................................................................................................1 B-47
Expansion Valve Replacement............................................................................................................................ 1B-48
Evaporator Core Replacement............................................................................................................................. 1B-51
Blower Motor Switch Replacement..................................................................................................................... 1B-51
Fuse Replacement.................................................................................................................................................1B-51
A/C System - G-Van.............................................................................................................................................. 1B-52
Condenser Replacement....................................................................................................................................... 1 B-52
Accumulator Replacement................................................................................. ................................................. 1B-52
Heater Core Replacement..................................................................................................................................... 1 B-52
Orifice (Expansion Tube) Replacement...............................................................................................................1B-52
Blower Motor Insulation (w/Diesel) Replacement.............................................................................................. 1 B-52
Evaporator Core (w/Diesel) Replacement............................................................................................................1B-55
Evaporator Core Replacement (Except Diesel).................................................................................................. 1B-56
Blower Motor Replacement.................................................................................................................................. 1B-56
Control Assembly Replacement.......................................................................................................................... 1B-57
Temperature Door Cable Adjustment..................................................................................................................1B-57
Blower Switch Replacement................................................................................................................................ 1B-59
Selector Replacement........................................................................................................................................... 1B-59
Resistor Replacement........................................................................................................................................... 1 B-59
Blower Motor Relay Replacement........................................................................................................................1B-59
A/C Right Duct Replacement............................................................................................................................... 1B-59
A/C Left Duct Replacement.................................................................................................................................. 1B-60
Defroster Duct Replacement................................................................................................................................ 1B-60
Temperature Door Cable Replacement................................................................................................................1B-61
Vacuum Tank Replacement.................................................................................................................................. 1B-62
Vacuum Lines - Engine Compartment..............................................................................................................1B-63
Refrigerant-12 Hose Routing.................................................................................................................................1B-63
Rear Interior Roof Mounted System - G-Van....................................................................................................... 1B-67
Rear Duct Replacement........................................................................................................................................ 1B-67
Rear Air Deflector Replacement...........................................................................................................................1B-67
Blower Motor Resistor Replacement...................................................................................................................1B-67
Blower Motor Assembly Replacement.................................................................................................................1B-69
Expansion Valve Replacement.............................................................................................................................1B-69
Evaporator Core Replacement..............................................................................................................................1B-71
Blower Motor Switch Replacement......................................................................................................................1B-71
Fuse Replacement................................................................................................................................................. 1B-71
A/C System - P-Truck ........................................................................................................................................... 1B-72
Specifications............................................................................................................................................................1B-73
Compressors..........................................................................................................................................................1 B-73
Torque Specifications........................................................................................................................................... 1B-74
A/C Electrical.......................................................................................................................................................... 1B-75
Refrigerant-12/Refrigerant Oil Capacities............................................................................................................ 1B-75
Special Tools.............................................................................................................................................................1B-76
CONTENTS (CONT.)
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