EXCESSIVE AIR FLOW COMING FROM VENTS AND/OR TOO COLD WHEN. Cadillac Seville 1998

SUBJECT: EXCESSIVE AIR FLOW COMING FROM VENTS AND/OR TOO COLD WHEN SWITCHING FROM HEATER TO BI-LEVEL ON AUTO (RECALIBRATE INSTRUMENT PANEL MODULE WITH NEW CALIBRATION)

MODELS: 1998 CADILLAC SEVILLE - BUILT PRIOR TO VIN BREAKPOINT WU916500 WITH 4.6L ENGINE (VIN Y - RPO LD8)

CONDITION:

SOME CUSTOMERS MAY COMMENT ON EXCESSIVE AIR FLOW OR AIR THAT IS TOO COLD COMING FROM THE INSTRUMENT PANEL VENTS, WHEN IN AUTO AND SWITCHING FROM HEATER TO BI-LEVEL MODE.

CORRECTION:

THIS CONDITION MAY BE CORRECTED BY A RECALIBRATION OF THE INSTRUMENT PANEL INTEGRATION MODULE (IPM). USING THE SCAN TOOL UPDATED WITH CD#3 / 980.3XX, DATED FEBRUARY 5, 1998 OR LATER, SELECT INSTRUMENT PANEL MODULE / SPECIAL FUNCTIONS / MISCELLANEOUS TESTS / IPM RECALIBRATION. DOWNLOAD CALIBRATION VERSION #7120 TO THE IPM. A VERIFICATION OF THE NEW CALIBRATION MAY BE PERFORMED IN MODULE INFORMATION.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR OPERATION NUMBER DESCRIPTION TIME =============== ============================= ===============

D3317 MODULE, AFTER BLOW PROGRAM 0.2 HR

FIGURES: 00

ATTACHMENTS: 00

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.