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What is your question?
"Service Stability System" has appeared on three occasions while driving under normal road conditions and consistently at or near 70 mph for a period of time. On two occasions, it occurred while going up a hill, on the same day, within 45 minutes time. I stopped both times and then stayed under 70 the remainder of the trip. On a different day, It occurred again on a straight road--again I stopped and then stayed under 70 mph.

2 Replies
My car is doing the same thing. It's okay to drive, just push the 'reset' button next to the display. I have not been able to get the problem taken care of, there are many sensors in the Stabilitrack system that can foul. I had the rear shocks replaced on my car which helped some but still get the service message.
he problem is caused by wheel bearing leads (the wires that plug into) they often wear out I had the same problem once u find out witch side try cleaning the plugs wiping clean free the dirt , salt ,ect but on one side I just bypass the plug ran jumper wires that solve the problem sometime the computer will reset it self sometime you have to take pos cable off wait 5 mins reconnect this will reset everything
Thanks for the input. I did some additional research which led me to believe that it was the steering position sensor. Took it to the Buick dealer and the repair man report that after computer monitoring during a drive, it was indeed the steering position sensor. Have taken a number of trips and the signal has not appeared. Thanks again.
he problem is caused by wheel bearing leads (the wires that plug into) they often wear out I had the same problem once u find out witch side try cleaning the plugs wiping clean free the dirt , salt ,ect but on one side I just bypass the plug ran jumper wires that solve the problem sometime the computer will reset it self sometime you have to take pos cable off wait 5 mins reconnect this will reset everything