False Side Blind Zone System Unavailable Message (Reprogram Side Blind Zone Module) (09-08-55-001A)

Publication date: 2010-05-24
Reference number: 09-08-55-001A
Supersedes refnos: 09-08-55-001

False Side Blind Zone System Unavailable Message (Reprogram Side Blind Zone Module)

TECHNICAL SERVICE BULLETIN

Reference Number(s): 09-08-55-001A, Date of Issue: May 24, 2010

Affected Model(s):	2008-2009 Buick Lucerne; 2010 Buick Lucerne; Built Prior to November 1, 2009; 2008-2009 Cadillac DTS; 2010 Cadillac DTS; Built Prior to November 1, 2009; 2009 Cadillac Escalade, Escalade ESV; 2009 Chevrolet Suburban, Tahoe; 2009 GMC Yukon, Yukon XL, Yukon Denali, Yukon Denali XL; All Equipped with Side Obstacle Detection RPO UFT
Supercedes:	This bulletin is being revised to add the 2010 model year Buick Lucerne and Cadillac DTS. Please discard Corporate Bulletin Number 09-08-55-001 (Section 08 - Body and Accessories).

Superceded Bulletin(s): 09-08-55-001, Date of Issue: October 8, 2009

Condition

Some customers may comment that the "Side Blind Zone System Unavailable" message displays on the DIC. They may also state that this message will be displayed when no obvious blockage is on the rear outside fascia.

Cause

This condition may be caused by the side blind zone alert module falsely detecting an object present. This is being caused by the module software detecting that there is an object in its field of view when there is nothing present.

Correction

Verify none of the following concerns were present when the message was displayed:

Rainfall
Mud/dirt/snow/ice/slush built up on the outside of the rear fascia

If none of the above concerns were present, then reprogram the side blind zone alert module with the latest software calibration.

IMPORTANT: Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes. Follow the on-screen instructions carefully. Prior to reprogramming, turn the ignition OFF and open and close the driver's door.

A revised calibration has been developed to address this condition. Technicians are to reprogram the side blind zone alert module using the Service Programming System (SPS) with the latest software available on TIS2WEB. Refer to the SPS procedures in SI.

IMPORTANT: At the SPS programming, select "Programming Process" and then select "Replace and Program ECU".

When using a Tech 2® or a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

During programming, the battery voltage must be maintained within the proper range of 12-15 volts. Only use the approved Midtronics® PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

Warranty Information

For vehicles repaired under warranty, use:

Warranty Information

Labor Operation	Description	Labor Time
N9622*	Side Blind Zone Alert Module Reprogramming with SPS	0.4 hr
*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.