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 - Insufficient System Cooling
  • A/C - Low and Medium Speeds Operates on Low Speed
  • A/C - Low Mileage or Compressor Belt Wear
  • A/C - Insufficient Heat
  • A/C - Moan Noise With Compressor Engaged
• By Symptom
  • Abnormal wear/deterioration
    • A/C - Low Mileage or Compressor Belt Wear
  • Customer Interest
    • Body - Broken Rear Window Defogger Grid Detection
    • A/C - Musty Odors Emitted From (HVAC) System
    • A/C - Insufficient System Cooling
    • A/C - Low and Medium Speeds Operates on Low Speed
    • A/C - Low Mileage or Compressor Belt Wear
    • A/C - Insufficient Heat
    • A/C - Moan Noise With Compressor Engaged
  • Driveability
    • A/C - Low Mileage or Compressor Belt Wear
  • Leaks
    • A/C - Refrigerant Loss Prevention
  • Loose
    • A/C - Low and Medium Speeds Operates on Low Speed
  • Noise
    • A/C - Moan Noise With Compressor Engaged
  • Odors
    • A/C - Musty Odors Emitted From (HVAC) System
  • Poor performance
    • A/C - Insufficient System Cooling
    • A/C - Insufficient Heat
• 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 - Insufficient System Cooling
  • A/C - Use of Alternate Refrigerants in CFC 12 Units
  • A/C Refrigerant - Contamination
  • A/C - CFC Reduction and Refrigerant Recovery
  • A/C - Leak Test Diagnosis Tools
  • A/C - Low and Medium Speeds Operates on Low Speed
  • A/C - Compressor Assembly Availability
  • A/C - System Diagnostic Procedure
    • Overview
    • A.Observe All Safety Precautions:
    • Visual Inspection, Check Charge, Check Electrical & Clutch System
    • E.Check Refrigerant System Performance: Engine Off to Start
    • F.Diagnosis and Service Procedures
  • A/C - Shaft Nut Removal from the HR6HE Compressor
  • A/C Compressor Seal Washer - Reference Chart
  • A/C - Low Mileage or Compressor Belt Wear
  • A/C - Insufficient Heat
  • A/C - Refrigerant Loss Prevention
  • A/C - Moan Noise With Compressor Engaged
  • Contaminated R12 Refrigerant - Testing & Handling
  • A/C - Retrofitting R-12 Vehicles to R-134A
  • Cooling System, A/C - Aluminum Heater Cores/Radiators