Attachment III - Technical Information

REASON FOR THIS SUPPLEMENT

The last 6.4L PCM calibration described in Supplement 2 on August 3, 2007 has been updated. IDS software release 50.7 Patch 7 or later must now be used. This release contains updates for the Powertrain Control Module (PCM), Transmission Control Module (TCM) and the Instrument Cluster (IC).

The safety concern addressed by this recall is repaired with any of the calibrations that have been released since this program launched on March 22, 2007. It is not necessary to reprogram vehicles that were previously serviced under this recall. There is also a new customer information sheet posted with this supplement that dealership service management must provide to customers who receive this service.

NOTE:
Vehicles previously serviced under 07849 do not need to be reprogrammed again.

MODULE REPROGRAMMING

1. Verity that the Integrated Diagnostic System (IDS) is updated to software release 50.7 Patch 7 or later.

2. Reprogram the PCM, TCM and IC using the IDS. Portable Diagnostic Software (PDS) cannot be used.

^ If the reprogram process was successful, proceed to Authorized Modifications Label Installation instructions in this Attachment III.

^ If unable to reprogram the PCM, TCM or IC:

- module replacement will not be covered underthis program, and

- prior to disconnecting the scan tool and closing the session, call the Special Service Support Center for further instructions.

AUTHORIZED MODIFICATIONS LABEL INSTALLATION





1. Obtain and prepare the Authorized Modifications Label. Describe the modification performed, and enter your P&A Code, date of repair and the program type and program number. See Figure 1.