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Registered
1996 Cadillac Deville, 2004 Cadillac DTS, 2011 CTS AWD Coupe
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331 Posts
Discussion Starter #1
So I disconnected my autostarter because it was really driving me nuts...

not Im getting these two codes right as soon as I drive my car.

C1223 - Left Rear Wheel Speed Sensor Input Signal is 0

U1000 - Class 2 Communication Malfunction


I think the U1000 is still from my remote start module being all dangled up in the cars business, but how can I go about replacing the rear wheel speed sensor? Its driving me nuts.

Thank you.
 

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Super Moderator
2010 DTS
Joined
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87,556 Posts
The speed sensor is integral to the hub and bearing assembly. You have to change IT.
 

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Registered
1996 Cadillac Deville, 2004 Cadillac DTS, 2011 CTS AWD Coupe
Joined
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331 Posts
Discussion Starter #3
So, I took off my rim and found the little thing...its behind the hub...does it just pop out or does it involve a lot more than that?

...im up for any challenge.

Thanks for the help.
 

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Super Moderator
2010 DTS
Joined
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87,556 Posts
If it is removable then they changed it from being integral, in which case you should be able to just replace the sensor.
 
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