Question about 2006 Cadillac STS

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2005 sts code states service suspension and service wheel sensors

There is nothing wrong with the car but the codes come up to service suspension and wheel sensors and dealer can find nothing wrong, any suggestions.

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So does my 2006 STS....!
On the Tire monitoring subject.... The next time it tells you to service it, scroll through and see if the system is reporting a tire pressure for each tire, if it is, and there is not all dashes for one of the tires, there is nothing to worry about.
Note.... aftermarket rims, tire sealants and tire rotations done without "relearning wheel sensor positions", (page 5-67 in your manual), can cause a "DTC" (Diagnostic Trouble Code) to display and tell you to service it.
On the stability system, I have to do some more digging....

Posted on Sep 07, 2009

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Hi Jose:
The first place to start is to have Ride Control Module scanned for trouble codes, this requires a high end scan tool. Most common problem is the air compressor in the rear or a height sensor. Here is how the system works.

Automatic Level Control Description and Operation
The RTD system is bi-state real time damping system. The Suspension Control module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system and electronic variable orifice (EVO) power steering system.

The Automatic Level Control system consists of the following:
• Suspension Control Module
• Compressor/Leveling Module
- Air Pressure Sensor
- Exhaust Solenoid
• Compressor Motor Relay

The objective of the Automatic Level Control System is to provide constant ride height at all load conditions. The Suspension Control module monitors body-to-wheel height, and vehicle speed.

The Suspension Control module will use the rear body-to-wheel displacements and vehicle speed inputs to keep the rear trim height of the vehicle at its desired level.

The electronic suspension control (ESC) system is bi-state real time damping system. The ESC module controls the suspension damper solenoids and suspension position sensors, along with parts of the automatic level control (ALC) system, if 1500 series.

The ESC system consists of the following:
• The ESC module
• The compressor/leveling module, if 1500 series
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- The exhaust solenoid, if 1500 series
• The compressor motor relay, if 1500 series
• The steering handwheel speed/position sensor
• The suspension damper solenoids
• The suspension position sensors

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

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have the codes cleared but if there is an issue in the system it will come back on find out what codes are in the system

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