SLOW PARK BRAKE RELEASE AND/ OR SLOW HVAC MODE CHANGES. Cadillac DeVille 1996

SUBJECT: SLOW PARK BRAKE RELEASE AND/OR SLOW HVAC MODE CHANGES (REMOVE DEBRIS FROM INSIDE VACUUM HARNESS CONNECTOR)

MODELS: 1996 CADILLAC CONCOURS, DEVILLE, ELDORADO, SEVILLE BUILT BEFORE FEBRUARY 2, 1996

CONDITION:

SOME OWNERS MAY COMMENT ON A SLOW PARK BRAKE RELEASE AND/OR SLOW HVAC MODE CHANGES, I.E.: FROM THE DEFROSTER OUTLET TO HEATER OUTLET.

CAUSE:

THIS CONDITION MAY BE CAUSED BY MANUFACTURING DEBRIS IN THE HEATER AND A/C PROGRAMMER VACUUM HARNESS CONNECTOR. THIS MANUFACTURING DEBRIS MAY NOT ALLOW THE PROPER AIR NECESSARY TO OPERATE THESE VACUUM CONTROLLED DEVICES.

CORRECTION:

THIS CONDITION CAN BE CORRECTED BY REMOVING THE DEBRIS FROM INSIDE THE VACUUM HARNESS CONNECTOR.

USE THE FOLLOWING PROCEDURE:

1. REMOVE LEFT SOUND INSULATOR.

2. DISCONNECT VACUUM HARNESS CONNECTOR FROM THE HEATER AND A/C PROGRAMMER.

3. REMOVE THE DEBRIS BETWEEN THE GREEN AND THE BLACK VACUUM HOSE. THIS DEBRIS CAN BE REMOVED BY USING AN AWL OR SMALL PICK.

4. CONNECT THE VACUUM HARNESS CONNECTOR TO THE HEATER AND A/C PROGRAMMER.

5. INSTALL THE LEFT SOUND INSULATOR. IF THIS CONDITION IS STILL NOT CORRECTED AFTER COMPLETING THE ABOVE PROCEDURE, THE VACUUM HARNESS ASSEMBLY WILL REQUIRE REPLACEMENT.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

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

D1707 HARNESS, VACUUM HOSE 0.3 HR R+R OR REPLACE

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.