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#1
09-28-2011, 11:53 AM
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ABS trouble
I have a 99 Grand am with codes ; C1233, C1226 and C1222. Ive tried cleaning the sesors and checking wires. Do I need a new wheel bearing?
1- speed sensor open (C1233) 2- right front or any vibration (C1226) 3-right front or any signal is zero (C1222) HELP!!! 
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#2
09-28-2011, 06:09 PM
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Re: ABS trouble
We techs have an advantage......called a Tech II....put car up in the air, look at the ABS data, and rotate the wheel....if data says zero, we take a spare wheel hub and rotate it by hand....if we now get a speed reading, the sensor/hub is bad...
If you have a multi meter, you can check the resistance of the sensor and also the A-C out of the sensor when rotating it.....
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