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2001 Corvette: Service Bulletin: Traction Control/Handling Lamp On

Model Year: 2001
Subject: Traction Control/Handling Lamp On, Drivers Info Center Displays Service Active Handling
Source: Chevrolet Dealer Service Technical Bulletin
Number: 01-05-25-004
Date: March, 2001

Condition:
Some customers may comment that the "Yellow" message, "Service Traction Active Handling", is illuminated on the Driver's Information Center.

The technician may find chassis DTC C1288 -- Vehicle Stability Enhancement System (VSES) Steering Wheel Sensor Phase A and B. When this code is set, the VSES is turned off; ABS and TCS remain operational.

Correction:
Verify the Techline equipment has been updated with TIS software 20.5 or newer. If it has not been updated, do so now. This software was broadcast to dealerships on January 1, 2001. CD #1 for 2001 was mailed in early January, 2001.

    1. Install the scan tool to the vehicle.

    2. Enter the chassis applications.

    3. Select F1: ABS/TCS/VSES.

    4. Select F4: ID Information.

    5. Select F1: Controller Information 2.

      1. If the DE Calibration P/N is 12212175 (this calibration went into production 11/30/00 after VIN 15114788), refer to the Service Information for diagnosis.

      2. If the DE Calibration P/N is 12204887, it will be necessary to update the ABS module.


Important

      The update cannot be performed until fuse #25 (Body Control Module-Ignition 1, Instrument Panel Control) 10 amp is removed from the Instrument Panel fuse block which is located on the passenger's side of the vehicle (under the Instrument Panel and under the toe board).



      Without removal of the fuse (prior to requesting information), unsuccessful reprogramming may occur.



  1. Power down the scan tool.

  2. Turn OFF the ignition and remove the key.

  3. Remove fuse #25, (Body Control Module-Ignition 1, Instrument Panel Control) 10 amp.

  4. Using the scan tool, perform the usual SPS reprogramming of the ABS module.

  5. Power down the scan tool.

  6. Turn OFF the ignition and remove the key.

  7. Replace fuse #25, (Body Control Module-Ignition 1, Instrument Panel Control) 10 amp.

  8. Verify the ABS DE Calibration P/N. If it is not P/N 12212175, redo the SPS programing procedure listed above.

  9. Clear the codes from all the modules.
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