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TSB 18-041-04

Flash: Improved AutomaticTransmission Shifting In " Tow/Haul" Mode

Visit Geno's Garage for Truck accessories.

Date: October 25, 2004

THE DRBIII FLASH FILES FOR THIS BULLETIN ARE AVAILABLE ON DealerCONNECT.

FOR MARKETS OUTSIDE OF THE UNITED STATES AND CANADA, THE FLASH FILES AND REPROGRAMMING INSTRUCTIONS WILL BE AVAILABLE ON ITIL/ISIS DVD NOVEMBER, 2004.

Models: 2004 (DR) Ram Truck

NOTE: This bulletin applies to vehicles equipped with a 5.7L engine (sales code EZA) and an automatic Transmission.

Overview:
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software.

Symptom/Condition:
The following enhancements are included with this software:

• Improved automatic transmission shifting while in “Tow/Haul” mode.

The vehicle operator may describe excessive transmission gear shifting or hunting while towing a trailer or hauling a heavy load in the “Tow/Haul” mode

Diagnosis:
Using a Scan Tool (DRBIII®) with the appropriate Diagnostic Procedures Manual, verify all engine systems are functioning as designed. If DTCs are present record them on the repair order and repair as necessary before proceeding further with this bulletin.

If the vehicle operator describes or the technician experiences the Symptom/ Condition, perform the Repair Procedure.

Parts Required:

Qty.	Part No.	Description
1	04275086AB	Label,   Authorized Modification

Special Tools/Equipment Required:

NOTE: An updated J1962 cable has been released. This cable has a red colored connector at the DRBIII connection. Use this cable whenever a flash is being performed.

Repair Procedure: 

NOTE: Whenever a controller is programmed, the software in the DRBIII must be programmed with the latest revision level available.

NOTE: If this flash process is interrupted/aborted, the flash should be restarted and then follow the directions on the DRBIII.

Most owners do not have access to the software and equipment required to program the ECM. To see the specific instructions, download the pdf version.

NOTE: Due to the PCM programming procedure, a DTC may be set in other modules (TCM, BCM, MIC, SKIM, etc.) within the vehicle, if so equipped. Some DTC’s may cause the MIL to illuminate. Check all modules using “Module Scan”, record the DTC’s, and erase these DTC’s prior to returning the vehicle to the customer. Erase any DTC’s in the PCM only after all other modules have had their DTC’s erased.

NOTE: The following step is required by law.

Type the necessary information on the 'Authorized Modification Label" p/n 04275086AB and attach near the VECI label (Fig. 2).

FIGURE 2 - AUTHORIZED MODIFICATION LABEL 1 - POWERTRAIN CONTROL MODULE P/N (INSERT P/N) USED 2 - CHANGE AUTHORITY: TSB XX-XXX-XX 3 - DEALER CODE: XXXXX 4 - DATE: XX-XX-XX

Policy:    Reimbursable within the provisions of the warranty.

Time Allowance:

Failure Code:

This page was edited on: May 3, 2004