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I've seen error message a few times before it disappears. It never stays on so really never paid much attention to the warning. What causes a "service active handling" warning to come on? If it doesn't stay on should I pay much attention to the warning?
 

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Sound like its the swps,steering wheel positioning switch,and yes pay atention to this warning,mine came on while I was driving,and the car seems to be possed,a total helpless feeling,this concerned me so much I made a complint to gm,and the nhtsa,and if you go to the nhtsa website you will find that you are not alone when it comes to this problem,there is a diy fix for this issue,but I strongly urge you to make it known to gm,that you have this problem,imho this should be a recall due to the safetey factor,I was fortunate I didnt hit anyone,or someone didnt hit me,its as if the brakes lock upon you,and have no control of the car
I've seen error message a few times before it disappears. It never stays on so really never paid much attention to the warning. What causes a "service active handling" warning to come on? If it doesn't stay on should I pay much attention to the warning?
 

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There is a TSB on this issue. There is a problem in cars with the telescoping steering wheel where the movement of the column can tug on the connector and cause a momentary spike that can send a strange signal to the steering wheel position sensor.

If it is an isolated incedent just watch it. If it has happened more than once, take it in for service, period and have the TSB performed to R&R the connector as indicated. Of course this is if your car has the telescoping steering column.

Not to be an alarmist but the repeated tugging on the connector can contribute to a condition called fretting of the connector pins. If this happens they can start a carbon buildup on the surface caused by the repeated arcing. If this buildup becomes enough to change the resistance of the connector it can lead to false readings to the steering wheel position sensor. Any false interpretation of the SWPS can lead to some diabolical behavior of the active handling system and cause the car to take proactive measures to right a perceived wrong. You really don't want this happening at the wrong time.

Other contributors can be an abs sensor or wheel speed sensor failing which can also cause the error message to appear. The last issue that I've also seen contribute was having one tire inflation pressure very high while having the other at or near the low end. This can cause measurement issues from the wheel speed sensor.

The repair, even not under warranty is a 30 minute exercise and it cost me $41 dollars parts and labor. They need to remove the lower panel under your steering wheel, open the connector, add a small wire jam to lock the terminals in place, reconnect the harness and tape it back up again.

A series of bad signals to the SWPS (steering wheel position sensor) is not a good condition to let go. Changes in the resistance of that connector can over time cause the SWPS to get bad information and make bad decisions. My money would be the SWPS wire harness that involves disconnecting and reconnecting the wire harness to clean the tips, adding a wire loom to the wire harness and adding a grease to the connectors. The easiest way to check for this is to have the codes checked. You will find a C0710 as either active or history. If you have a local autozone or similar auto parts place they will usually check codes for you for free. The TSB for this is 06-02-35-002.
 
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