SERVICE MANUAL UPDATE SEC 1B REFRIGERANT AND OIL CAPACITY

SUBJECT: SERVICE MANUAL UPDATE - SECTION 1B REFRIGERANT AND OIL CAPACITY (REVISED SPECIFICATIONS)

VEHICLES AFFECTED: 1992 "C/K" TRUCKS

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.