Heating and Air Conditioning: Technical Service Bulletins

• Customer Interest
  • Body - Broken Rear Window Defogger Grid Detection
  • A/C - Musty Odors Emitted From (HVAC) System
  • A/C - Odors at Start Up in Hot Humid Climates
    • Overview
    • Required Equipment
    • Procedure:
  • A/C - Compressor Lines Reversed During Service
  • A/C Compressor Discharge Pipe - Broken
  • A/C Compressor - Repetitive Failure
  • Air Conditioning - Moan and Vibration
  • Windshield - Condensation In High Heat/Humidity
  • Heater - Warm Air Blowing Into Driver's Face
  • A/C - Lack of Heating Performance
  • Climate Control - Excessive Heating
  • Climate Control System - Poor Temperature Regulation
  • Heater - Insufficient Heat
  • Heater Air Conditioning Unit - Whistling Noise
• By Symptom
  • Abnormal wear/deterioration
    • A/C Compressor Discharge Pipe - Broken
    • A/C Compressor - Repetitive Failure
    • Windshield - Condensation In High Heat/Humidity
  • Customer Interest
    • Body - Broken Rear Window Defogger Grid Detection
    • A/C - Musty Odors Emitted From (HVAC) System
    • A/C - Odors at Start Up in Hot Humid Climates
      • Overview
      • Required Equipment
      • Procedure:
    • A/C - Compressor Lines Reversed During Service
    • A/C Compressor Discharge Pipe - Broken
    • A/C Compressor - Repetitive Failure
    • Air Conditioning - Moan and Vibration
    • Windshield - Condensation In High Heat/Humidity
    • Heater - Warm Air Blowing Into Driver's Face
    • A/C - Lack of Heating Performance
    • Climate Control - Excessive Heating
    • Climate Control System - Poor Temperature Regulation
    • Heater - Insufficient Heat
    • Heater Air Conditioning Unit - Whistling Noise
  • Erratic Operation
    • Heater - Warm Air Blowing Into Driver's Face
    • Climate Control - Excessive Heating
    • Climate Control System - Poor Temperature Regulation
  • Inoperative
    • A/C Compressor - Repetitive Failure
  • Leaks
    • A/C - Leak Test
    • Windshield - Condensation In High Heat/Humidity
  • Loose
    • A/C System - Refrigerant Loss Prevention
  • Noise
    • Air Conditioning - Moan and Vibration
    • Heater Air Conditioning Unit - Whistling Noise
  • Odors
    • A/C - Musty Odors Emitted From (HVAC) System
    • A/C - Odors at Start Up in Hot Humid Climates
      • Overview
      • Required Equipment
      • Procedure:
  • Poor performance
    • A/C - Unnecessary Compressor Replacement
    • A/C - Lack of Heating Performance
    • Climate Control System - Poor Temperature Regulation
    • Heater - Insufficient Heat
  • Vibration
    • Air Conditioning - Moan and Vibration
• All Technical Service Bulletins
  • Vehicle - Engine And Sub Systems Flushing Info. (CANADA)
  • Vehicle - Engine And Sub-Systems Flushing Recommendations
  • Body - Broken Rear Window Defogger Grid Detection
  • A/C - Musty Odors Emitted From (HVAC) System
  • A/C - PureGuard 2 Operating Alert
    • Overview
    • Refrigerant Recovery
    • Oil Injection and Refrigerant Charging
    • Additional ACR4 Operation and Maintenance Tips
    • Tank-to-Tank Refrigerant Transfer
    • Excess Air In Tank
    • Pureguard 2 Error Codes
    • Active Flow Control
  • A/C - Tool And Equipment Maintenance
  • A/C - Systems With R12 Or R134a Service Issue
    • Overview
    • R12 System Retrofitting to R134A
    • Servicing R134A Retrofitted Vehicle Systems
    • R12 and R134A Refrigerants Are Not Interchangeable
    • J 41810 Pureguard 2 R134A Refrigerant Monitor
    • Summarizing GM's A/C Service Recommendations
  • Tools - A/C Leak Detector Maintenance Kit Availability
    • Overview
    • Service Procedure
  • A/C - Unnecessary Compressor Replacement
  • A/C Refrigerant - Contamination
  • A/C - CFC Reduction & Refrigerant Recovery/Recycling
  • A/C - R134A Refrigerant Information
  • A/C - Odors at Start Up in Hot Humid Climates
    • Overview
    • Required Equipment
    • Procedure:
  • A/C - Leak Test
  • A/C - Compressor Lines Reversed During Service
  • A/C Compressor Discharge Pipe - Broken
  • A/C - System Description & Diagnostic Procedure
  • A/C Compressor Shaft Nut - Removal (Discontinued)
  • A/C Compressor - Repetitive Failure
  • A/C Compressor Seal Washer - Reference Chart
  • Air Conditioning - Moan and Vibration
  • Windshield - Condensation In High Heat/Humidity
  • Heater - Warm Air Blowing Into Driver's Face
  • Air Conditioning - Orifice Tube Location
  • A/C - Lack of Heating Performance
  • Climate Control - Excessive Heating
  • Climate Control System - Poor Temperature Regulation
  • A/C System - Refrigerant Loss Prevention
  • A/C - Discharge Line Breakage and/or Repeat Failure
  • Heater - Insufficient Heat
  • Contaminated R12 Refrigerant - Testing & Handling
  • A/C - Retrofitting R-12 Vehicles to R-134A
  • A/C - Information On the Use of Alternate Refrigerants
  • Heater Air Conditioning Unit - Whistling Noise
  • Cooling System, A/C - Aluminum Heater Cores/Radiators