HVAC

All Component Locator

• Heater Blower Controls Component Views
• Heater Blower Controls Components

All Description and Operation

• Air Distribution System Description
• Control Assembly Description
• Heater Blower Controls Circuit Description
• Heater Core Description
• Heater System Description
• Modes Description
• Ventilation Description

All Visual Identification

• Heater Blower Controls Connector End Views

Cleaning, Inspection, and Adjustment

• Mode Control Cable Adjustment
• Vent Control Cable Adjustment

Diagnostic Procedures

• Air Delivery Improper
• Blower Motor Always On
• Blower Motor Inoperative at Any Speed
• Blower Motor Inoperative at High Speed Only
• Blower Motor Inoperative at Low Speed Only
• Blower Motor Inoperative Med-1
• Blower Motor Inoperative Med-2
• Blower Motor Operates at High Speed Only
• Defrosting Insufficient
• Heat Excessive
• Heater Blower Controls System Check
• Heating Insufficient
• High or Low Temperature Control Effort
• Noise Diagnosis

Electrical/Electronic Schematic Diagrams

• Heater Blower Controls Schematic References
• Heater Blower Controls Schematics

General Diagnostic Information

• Function Test

Mechanical Specifications

• Fastener Tightening Specifications

Other Specifications

• GM SPO Group Numbers

Removal, Installation, and Replacement

• Blower Motor and Fan Replacement
• Blower Motor Resistor Replacement
• Blower Switch Replacement
• Control Assembly Bulb Replacement
• Control Assembly Replacement
• Defroster Air Outlet Replacement
• Heater Case Replacement
• Heater Core Replacement
• Heater Hoses Replacement
• Instrument Panel Air Outlet Ducts Replacement
• Mode Control Cable Replacement
• Rear Floor Air Outlet Replacement
• Side Window Air Outlet Replacement
• Temperature Control Cable Adjustment
• Temperature Control Cable Replacement
• Vent Control Cables Replacement