Question about 2005 Chevrolet Impala

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My low trac ligth, and abs is on

How can i test if is the sensor, and what wheel sensor left or rigth
i like a good tip, thank you

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The rear wheel sensors are the most likely to go. They are intergrated into the wheel bearing assembly and there is no repair when they go. You have to replace the entire bearing unit. Raise the vehicle and remove the tire to check the electrical connector behind the wheel. It has two contacts. If the circut is open or it does not change state when you spin the wheel, the sensor is bad. You can order the bearing on line of get it from a well stocked parts supply. Price ranges from $85 to over $160.
A reputable garage will charge anywhere from $500 to $750 to do the job depending on where you live.
If you are a serious DIY mechanic, don't let this job scare you off.
My best advice is to test the new part BEFORE you disassemble the wheel, brake and hub. You can plug in the new part and see if the ABS and Trac lights go off. If they do, you have the right side.
Search the web and you will find some great diagrams and sequence info on how to proceed.
I did mine for less than $100 in parts and 4 hours on a rainy day.
Good luck.

Posted on Oct 31, 2009

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You vehicle had (4) sensors one on each wheel my advise it to get your car on a code scanner (ex. snap -on, OTC etc) and that will tell what exactly is the problem, you can't guess. You will be wasting your time. Take it to Auto-Zone they do a check for free. Good Luck

Posted on Dec 21, 2008

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If one of the wheel speed sensors is faulty, or a hub is bad, that can cause the problem described.

Good luck on repairing this problem.

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Try this cheap fix first.

Remove the left front wheel speed sensor, clean and reinstall it. They are magnetic and some times road debris will block the sensor. If that was the problem the ABS and traction lights will go off when you start the car.

Your second option is to have the shop scan the vehicle trouble codes, usually this costs an hours labor.

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