SMU-SEC-1B - AIR COND. REV. CHART 8 (INSUFF. COOL) & ART. Oldsmobile Aurora 1997

SUBJECT: SERVICE MANUAL UPDATE - SECTION 1B - AIR CONDITIONING - REVISED CHART B (INSUFFICIENT COOLING) AND ARTWORK

MODELS: 1995-98 OLDSMOBILE AURORA WITH 4.0L ENGINE (VIN C - RPO L47)

THIS BULLETIN IS BEING ISSUED TO UPDATE CHART B (INSUFFICIENT COOLING) AND ARTWORK IN SECTION 1B OF THE SERVICE MANUAL.

IT SHOULD ALSO BE NOTED THAT THE ABOVE VEHICLES DO NOT USE AN A/C PRESSURE FAN SWITCH AS DESCRIBED IN THE SERVICE MANUAL. THE PRESSURE CYCLING SWITCH DESCRIBED IN THE SERVICE MANUAL SHOULD BE REFERRED TO AS THE A/C LOW PRESSURE SENSOR.

CHART B (ATTACHED) SHOULD BE USED TO UPDATE THE FOLLOWING PAGES:

1995 1B-10 1996 1B-11 1997 1B-12 1998 1B-11

FIGURE 1 (ATTACHED) SHOULD BE USED TO UPDATE THE FOLLOWING PAGES:

1995 1B-5 1996 1B-5 1997 1B-5 1998 1B-4

FIGURE 2 (ATTACHED) SHOULD BE USED TO UPDATE THE FOLLOWING PAGES:

1995 1B-8 1996 1B-8 1997 1B-8 1998 1B-7

FIGURES: 02 ATTACHMENTS: 03

FIGURE 1 1. MUFFLER 2. LINE, HIGH-SIDE (DISCHARGE) 3. A/C HIGH SIDE TEMPERATURE SENSOR 4. CONDENSER 5. LINE, LIQUID 6. PORT, HIGH-SIDE SERVICE 7. TUBE, EXPANSION (ORIFICE) 8. PORT, LOW-SIDE SERVICE 9. A/C LOW TEMPERATURE SENSOR 10. EVAPORATOR 11. ACCUMULATOR 12. DESICCANT 13. HOLE, OIL BLEED 14. A/C LOW PRESSURE SENSOR 15. LINE, LOW-SIDE (SUCTION) 16. SWITCH, HIGH PRESSURE CUT OUT 17. VALVE, HIGH PRESSURE RELIEF 18. COMPRESSOR

FIGURE 2 1. A/C LOW PRESSURE SWITCH 2. A/C HIGH SIDE TEMPERATURE SENSOR 3. HIGH SIDE SERVICE FITTING 4. LOW SIDE SERVICE FITTING 5. A/C LOW SIDE TEMPERATURE SENSOR

Object Number: 335774 Size: SF

Object Number: 335776 Size: MF

Object Number: 335778 Size: FS

Object Number: 335780 Size: FS

Object Number: 335782 Size: FS

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.