Cadillac Issues...and not from my autostart

phathead785 · Jul 6, 2009

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.

Ranger · Jul 7, 2009

The speed sensor is integral to the hub and bearing assembly. You have to change IT.

phathead785 · Jul 7, 2009

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.

Ranger · Jul 7, 2009

What year car is this?

phathead785 · Jul 7, 2009

Oh, Im sorry....2004 DTS

Ranger · Jul 7, 2009

If it is removable then they changed it from being integral, in which case you should be able to just replace the sensor.

Cadillac Issues...and not from my autostart

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