GM Service Manual Online
For 1990-2009 cars only
Makes
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Buick
🢒
1999
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LeSabre
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HVAC
🢒 HVAC Systems - Automatic
HVAC
All Component Locator
HVAC Component Views
HVAC Components
All Description and Operation
Accumulator Description
Actuator Description
Air Conditioning (A/C) Refrigerant Pressure Sensor Description
Air Conditioning (A/C) System Description
Air Distribution System Description
Ambient Air Temperature Sensor Description
Automatic Air Conditioning (A/C) System Description
Blower Control Module Description
Blower Motor Description
Compressor Description
Condenser Description
Control Assembly Description
Control Assembly Description - Passenger
Dual Zone Air Conditioning (A/C) System Description
Evaporator Description
Expansion (Orifice) Tube Description
Handling Air Conditioning Compressor Oil
Handling of Refrigerant Lines and Fittings
Handling Refrigerant R-134a
Heater and Air Conditioning Control Vacuum Tank Description
Heater System Description
HVAC Blower Controls Circuit Description
HVAC Compressor Controls Circuit Description
HVAC Temperature Controls Circuit Description
Inside Air Temperature Sensor Description
Maintaining Chemical Stability
O-Ring/Flat Washer Description
Operating Modes
Programmer Description
Purge Mode Description
Refrigerant Oil Distribution
Refrigerant R-134a
Refrigeration System Description
Sun Load Temperature Sensor Description
Vacuum Hose Harness Description
All Special Tools and Equipment
Special Tools
All Visual Identification
HVAC Connector End Views
Cleaning, Inspection, and Adjustment
Compressor Leak Testing
Temperature Valve Link Adjustment
Temperature Valve Link Adjustment - Driver
Temperature Valve Link Adjustment - Passenger
Diagnostic Procedures
Air Delivery Improper
Air Temperature Control Inoperative - Passenger
Blower Has High Speed Only
Blower Motor Always On
Blower Motor Inoperative at Any Speed
Diagnostic Trouble Code (DTC) Clearing
Diagnostic Trouble Code (DTC) Displaying
Heating Insufficient
HVAC Compressor Clutch Does Not Engage
Noise Diagnosis
Diagnostic Trouble Codes
DTC 008 RH Sunload Sensor Circuit Open or Shorted
DTC 010 Outside Temp Sensor Circuit Open/Shorted
DTC 013 Inside Temp Sensor Circuit Open/Shorted
DTC 015 LH Sunload Sensor Circuit Open or Shorted
DTC 034 Pass Control to Programmer Data Loss
DTC 035 Control Assembly to Programmer Data Loss
DTC 035 Control Assy to Programmer Loss of E and C
DTC 036 Pass Control Assy Feedback Out of Range
DTC 038 Loss of Serial Data (UART)
DTC 040 Air Mix Door Motor Circuit Open or Shorted
DTC 041 Pass Air Mix Motor Circuit Open or Shorted
DTC 052 Programmer Loss of Keep Alive Memory (KAM)
DTC Table
Disassembly, Overhaul, Repair, and Assembly
Air Conditioning Clutch Coil Installation
Air Conditioning Clutch Coil Removal
Clutch Rotor and Bearing Removal
Clutch Rotor and/or Bearing Install
Compressor Clutch Plate and Hub Assembly Removal
Compressor Clutch Plate/Hub Assembly Install
Compressor Control Valve Assembly Install
Compressor Control Valve Assembly Removal
Compressor Pressure Relief Valve Installation
Compressor Pressure Relief Valve Removal
Compressor Shaft Seal Install
Compressor Shaft Seal Removal
Electrical/Electronic Schematic Diagrams
HVAC Air Delivery/Temperature Control Schematics
HVAC Blower Control Schematics
HVAC Compressor Control Schematics
HVAC Schematic Icons
HVAC Schematic References
General Diagnostic Information
Cooling Insufficient - Air Conditioning (A/C) Inoperative
Diagnostic System Check
Intermittents and Poor Connections
Leak Testing
Odor Diagnosis
Scan Tool Diagnostics
Self-Diagnostics
Sensor Resistance Table
System Performance Test
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
GM SPO Group Numbers
Refrigerant Oil Distribution Specifications
System Capacities
Removal, Installation, and Replacement
Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
Air Conditioning Accumulator Replacement
Air Conditioning Compressor Bracket Replacement
Air Conditioning Compressor Hose Replacement
Air Conditioning Compressor Replacement
Air Conditioning Condenser Replacement
Air Conditioning Evaporator Core Replacement
Air Distributor Duct Replacement
Air Inlet Actuator Replacement
Air Inlet Assembly Replacement
Air Mix Actuator Replacement - Driver
Air Mix Actuator Replacement - Passenger
Ambient Temperature Sensor Replacement
Blower Motor and Fan Replacement
Blower Motor Control Module Replacement
Control Assembly Replacement
Control Assembly Replacement - Passenger
Crosscar Air Outlet Replacement
Defroster Valve Actuator Replacement
Expansion (Orifice) Tube Replacement
Heater Core Replacement
Heater/Bi-Level Actuator Replacement
HVAC Module Assembly Replacement
Inside Air Temperature Sensor Replacement
O-Ring Replacement
Programmer Replacement
Refrigerant Recovery and Recharging
Sun Load Temperature Sensor Replacement
Temperature Actuator Replacement
Vacuum Electrical Solenoid Replacement