SERVICE MANUAL UPDATE SEC 1B REFRIGERANT AND OIL CAPACITY. GMC Truck GMC Suburban

THE AIR CONDITIONING SYSTEM REFRIGERANT AND OIL REQUIREMENTS HAVE BEEN REVISED AS SHOWN BELOW:

1. REFRIGERANT - 12 . PICKUP MODELS - 1.134 KG (2.5 LBS.) . CREW CAB, SUBURBAN, AND UTILITY MODELS - 1.361 KG (3.0 LBS.) . SUBURBAN MODELS WITH AUX. A/C - 1.928 KG (4.25 LBS.)

2. 525 VISCOSITY REFRIGERANT OIL . WITHOUT AUX. A/C - 240 ML (8 FL. OZ.) . WITH AUX. A/C - 330 ML (11 FL. OZ.)

*OVERCHARGING A SYSTEM MAY ALLOW LIQUID REFRIGERANT - 12 TO GET INTO THE COMPRESSOR, CAUSING COMPRESSOR NOISE AND DAMAGE. UNDERCHARGING WILL CAUSE INSUFFICIENT COOLING

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.