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 Compressor - Service When Seized
  • A/C Compressor - Loading/Low Engine Idle in Defrost Mode
  • Engine - Low Engine Idle Speed/Rough Idle
  • A/C - Hot Air Leak/Not In Heater Mode
  • A/C - R12 Loss From Loose or Missing Access Fitting Caps
  • A/C - Refrigerant Hose & Clamp Repairs
  • A/C Discharge Pipe - Contacts/Damages Radiator
• By Symptom
  • Abnormal wear/deterioration
    • A/C Discharge Pipe - Contacts/Damages Radiator
  • Customer Interest
    • Body - Broken Rear Window Defogger Grid Detection
    • A/C - Musty Odors Emitted From (HVAC) System
    • A/C Compressor - Service When Seized
    • A/C Compressor - Loading/Low Engine Idle in Defrost Mode
    • Engine - Low Engine Idle Speed/Rough Idle
    • A/C - Hot Air Leak/Not In Heater Mode
    • A/C - R12 Loss From Loose or Missing Access Fitting Caps
    • A/C - Refrigerant Hose & Clamp Repairs
    • A/C Discharge Pipe - Contacts/Damages Radiator
  • Driveability
    • A/C Compressor - Loading/Low Engine Idle in Defrost Mode
    • Engine - Low Engine Idle Speed/Rough Idle
  • Inoperative
    • Engine - Low Engine Idle Speed/Rough Idle
  • Leaks
    • A/C - R12 Loss From Loose or Missing Access Fitting Caps
    • A/C - Refrigerant Hose & Clamp Repairs
  • Loose
    • A/C - R12 Loss From Loose or Missing Access Fitting Caps
  • Odors
    • A/C - Musty Odors Emitted From (HVAC) System
  • Poor performance
    • A/C - R12 Loss From Loose or Missing Access Fitting Caps
  • Sticking/Binding
    • A/C Compressor - Service When Seized
  • Won't turn off
    • A/C - Hot Air Leak/Not In Heater Mode
• 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 Refrigerant - Contamination
  • A/C - CFC Reduction & Refrigerant Recovery Recycling
  • A/C Cruise Resume Valve Connector Cover - Revised
  • A/C - Compressor Assembly Availability
  • A/C Compressor - Service When Seized
  • A/C Compressor - Loading/Low Engine Idle in Defrost Mode
  • Engine - Low Engine Idle Speed/Rough Idle
  • A/C Compressor Seal Washer - Reference Chart
  • A/C - Hot Air Leak/Not In Heater Mode
  • A/C - Refrigerant Loss Prevention
  • A/C - R12 Loss From Loose or Missing Access Fitting Caps
  • A/C - Refrigerant Hose & Clamp Repairs
  • A/C Discharge Pipe - Contacts/Damages Radiator
  • A/C Compressor Shaft Seal - Usage
  • Isolation Diodes - Replacement Information
  • A/C - Use of Alternate Refrigerants In CFC 12
  • Contaminated R12 Refrigerant - Testing & Handling
  • A/C - Retrofitting R-12 Vehicles to R-134A
  • Cooling System, A/C - Aluminum Heater Cores/Radiators