CONTINUOUS A/C HISS NOISE (REPLACE ORIFICE ASSEMBLY). Cadillac Concours 1994

For 1990-2009 cars

# CONTINUOUS A/C HISS NOISE (REPLACE ORIFICE ASSEMBLY)

#### SUBJECT: CONTINUOUS A/C HISS NOISE (REPLACE ORIFICE ASSEMBLY)

#### MODELS: 1994 CADILLAC ELDORADO, DEVILLE, CONCOURS AND SEVILLE

#### CONDITION:

SOME OWNERS MAY COMMENT ON A CONTINUOUS HISS NOISE WHICH CAN BE HEARD INSIDE THE VEHICLE WHEN THE A/C COMPRESSOR IS IN OPERATION. THIS NOISE IS MORE LIKELY TO BE NOTICED AT IDLE OR WHEN AMBIENT NOISE IS LOW.

THIS HISS NOISE SHOULD NOT BE CONFUSED WITH THE NORMAL HISS NOISE WHICH CAN BE NOTICED AFTER THE VEHICLE IS SHUT OFF.

#### CAUSE:

THE HISS NOISE MAY BE CAUSED BY A DAMAGED, MIS-LOCATED OR MISSING REFRIGERANT ORIFICE O-RING.

#### CORRECTION:

REPLACE THE ORIFICE ASSEMBLY WITH P/N 3033879.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: D3200 USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 0

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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.