HVAC

All Component Locator

• Heater Blower Controls Component Views
• Heater Blower Controls Components

All Description and Operation

• Air Distribution System Description
• Auxiliary Heater Description
• Control Assembly Description
• Heater Blower Controls Circuit Description
• Heater System Description
• Heater Water Shutoff Valves Description
• Modes Description

All Special Tools and Equipment

• Special Tools

All Visual Identification

• Heater Blower Controls Connector End Views

Diagnostic Procedures

• Air Delivery Improper
• Auxiliary Blower Motor Always On
• Auxiliary Blower Motor High Speed Inoperative
• Auxiliary Blower Motor Inoperative at Any Speed
• Auxiliary Blower Motor Low Speed Inoperative
• Auxiliary Blower Motor Medium Speed Inoperative
• Auxiliary Blower Motor Operates at High Speed Only
• 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
• Heater Blower Controls System Check
• Heater Output Temperature Check
• Heating Insufficient
• Noise Diagnosis

Electrical/Electronic Schematic Diagrams

• Heater Blower Controls Schematic Icons
• 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

• Air Distributor Duct Replacement
• Auxiliary Air Outlet Duct Replacement
• Auxiliary Blower Motor Replacement
• Auxiliary Blower Motor Resistor Replacement
• Auxiliary Heater Core Replacement
• Auxiliary Heater Pipe Replacement
• Auxiliary Heater Pipe Replacement - Front
• Blower Motor and Fan Replacement
• Blower Motor Insulator Replacement
• Blower Motor Resistor Replacement
• Control Assembly Bulb Replacement
• Control Assembly Replacement
• Control Switch Replacement - Auxiliary
• Defroster Air Outlet Replacement
• Defroster Valve Replacement
• Floor Air Outlet Duct Replacement - Left Side
• Floor Air Outlet Replacement
• Heater Case Replacement
• Heater Core Replacement
• Heater Hoses Replacement
• Heater Water Bypass Valve Replacement
• Instrument Panel Air Outlet Ducts Replacement
• Lap Air Outlet Duct Replacement - Left Side
• Mode Door Actuator Replacement - Auxiliary
• Mode Valve Actuator Replacement
• Mode Valve Replacement
• Side Window Air Outlet Replacement