Vacuum Harness - Slow Park Brake Release/AC Mode Changes

File In Section: 1 - HVAC

Bulletin No.: 63-11-05

Date: April, 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 Prior to 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 Description Labor Time

D1707 Harness, Vacuum Hose 0.3 hr
R&R or Replace