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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,900 Posts
Which year and model of Deville? It makes a big difference in advice offered. Welcome to CF !!!

The car probably has a built-in diagnostic code scanner/reader. Use the correct year/model group of instructions in the sticky thread (marked with a push pin) "How to pull codes". Get any stored codes, define them using the link in the sticky, and post it all here.
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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87,198 Posts
My guess is you have a problem with the ABS system.

What does service stability system warning on a Cadillac mean?
The stability system is basically an addition to your abs brake system. It operates by adding additional sensors such as a steering wheel position sensor and a yaw sensor and is designed to determine if the vehicle is losing directional control. It can apply braking to specific wheels in an attempt to correct if the vehicle is sliding or losing traction. If the stability system light is on, then the system is disabled for a failure. It can be disabled for several reasons. If the abs light is NOT on as well then it is likely not a wheel speed sensor failure. It can be a steering wheel position sensor or yaw sensor. It can also be disabled due to an engine control fault such as a misfire that will disable traction control. Do you have an abs light on or check engine light as well? If not, the most common cause is generally the steering wheel position sensor. However I would recommend having the system scanned for fault codes so at least we know exactly what part of the system the failure is in.
 

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Registered
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4 Posts
Discussion Starter #4
Hi....my name is Tammy and I'm new to this forum....I own a 2003 Cadillac Deville and am looking for someone who can provide info.
Thx,
Tammy
 

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Super Moderator
2003 Deville Base
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5,161 Posts
Welcome to the forums, Tammy! To get the most relevant answers, go to the Deville page here:
Cadillac DeVille 1985 to 2005 including:1985-1992

also, it'll help if you add whether your car is Base, DHS, or DTS. When you go to the Deville page, be sure to read the stickies at the top of page-lots of info. If you haven't already, read your owner's manual twice, all the way through.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,867 Posts
How do I know if my cat is base....DHS.....or DTS?
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look at the first 5 characters of your VIN -
1G6KD = BASE model Deville
1G6KE = DHS - Deville High Luxury Sedan
1G6KF - DTS - Deville Touring Sedan

==================

so - what's wrong with your car?
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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69,900 Posts
Posts 4,5,6,7,8 moved to this thread on the same subject from the Lounge.

Please do not duplicate posts and threads on the same car/problem. Thanks.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,867 Posts
I keep getting message "SERVICE STABILITY SYSTEM "
========================
STEP #1 - ALWAYS - check for DTC's - Diagnostic Trouble Codes - using the on-board scanner -
if you don't know how - go here -

post any codes you have -
ALONG WITH THEIR DEFINITIONS -

include whether they are C-Current or H-History -

for code definitions - go here -


here is a how-to video -

=========================

SERVICE STABILITY SYSTEM message is usually caused by a faulty SPS - Steering wheel Position Sensor -
typically it is accompanied by a C1286 or C1287 or C1288 DTC - that is almost always a H-HISTORY code -

the SPS is a donut shaped device located at the base of the steering column -

it tells the computer what direction the steering wheel is turned -

the computer compares that information with input from other sensors
to determine whether the car is skidding - or going straight -

MOST of the time when the SPS fails it is a VERY brief "FLASH" -
just enough to set a DTC and trigger the error message -
then functions completely "normal" -
which is why the code always shows as a HISTORY code and not a CURRENT code -

there are TWO different part numbers - WITH or WITHOUT power tilt and trim steering column -
the on-line price for the part is around $85 -
the LABOR to install that part is a [email protected]$$ - the steering column must be removed -
total cost to pay to have this done is probably around $400 -

YES - you can ignore the message and do NOTHING -
the side affect is that the stability system MIGHT not function during a skid -
 
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