Canada - A/T - Brake Hold System Not Releasing upon Accel.
Bulletin2410
Issue Date
April 24, 2007
Title
BRAKE HOLD SYSTEM DOES NOT RELEASE UPON ACCELERATION
Component
BODY
Models
'07 LS 460 & LS 460L
INTRODUCTION:
Some 2007 model year LS 460 vehicles may display a condition where the vehicle does NOT accelerate from a stop with the Brake Hold System engaged. The Transmission Control Module (TCM) logic has been revised to prevent this condition.
APPLICABLE VEHICLES:
- 2007 model year LS 460 and LS 460L vehicles produced BEFORE the Production Change Effective VINs shown below.
PRODUCTION CHANGE INFORMATION:
PARTS INFORMATION:
WARRANTY INFORMATION:
REQUIRED SSTS:
CALIBRATION IDENTIFICATION CHART:
REPAIR PROCEDURE:
1. Check for the Authorized Modifications Label affixed to the vehicle in the location shown in Figure 1. Confirm if the TCM calibration has been updated. If the calibration ID listed is NOT the latest TCM calibration - go to step 2.
2. Flash Reprogram ECM (PCM).
NOTE:
The Midtron Battery charger MUST be used in Power Supply Mode to maintain battery voltage at 13.5 volts while flash programming the vehicle.
Follow the procedures outlined in TSB2401, "Techstream ECU Flash Reprogramming Procedure," and flash the TCM with the NEW calibration file update.
1. Install the Authorized Modifications Label.
A. Using a permanent marker, enter the following information on the label:
- ECM (PCM) part number: [Refer to the Parts Information section for the CURRENT PART NUMBER]
- Calibration ID(s): [Refer to the Calibration Identification Chart for the NEW CALIBRATION ID]
- Dealer Code
- Repair Date
- Change Authority (this TSB number): TSB2410L
B. Affix the Authorized Modifications Label to the vehicle at the location shown in Figure 1. The Authorized Modifications Label is available through the PDC, P/N 00451-00001-25.
2. The repair is complete. Test drive the vehicle to confirm normal operation.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.