Brakes/Traction Control - Service Stability Displayed

Bulletin No.: 03-05-25-005

Date: August 20, 2003

TECHNICAL

Subject:
Service Stability Message and DTCs C0455 or C0550 Set (Update Vehicle Stability Enhancement System (VSES) Module Software)

Models:
2003-2004 Cadillac Escalade, Escalade ESV, Escalade EXT
2003-2004 Chevrolet Suburban, Tahoe
2003-2004 GMC Denali, Denali XL, Yukon, Yukon XL
with Vehicle Stability Enhancement System (RPO JL4)

Condition

Some customers may comment on one or more of the following concerns:

^ The Service Stability message may be displayed on the DIC (Driver Information Center).

^ The vehicle lighting systems may dim noticeably.

^ The VSES motor may come on unexpectedly.

^ The brake and Anti-Lock Brake System (ABS) telltales may come on and chime. This concern is most common in cold weather.

Technicians may find Diagnostic Trouble Code (DTC) C0455 and/or C0550 set.
Correction

Technicians are to update the VSES module with new software. The new software will be available in TIS version 6.5 scheduled for release on June 15, 2003. All 2004 model year trucks built prior to June 16, 2003 will also need the VSES module software update.

Warranty Information





For vehicles repaired under warranty, use the table.





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