Anything I need to know before replacing ABS sensor? - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

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  #1  
Old 10-10-2010, 10:12 AM
CHAVEZ CHAVEZ is offline
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Anything I need to know before replacing ABS sensor?

Was changing lower ball joints and went to disconnect the ABS sensor and it snapped right off the hub. Yes...I now know to just unplug it near the frame and keep it plugged into the hub. I'm so frustrated that I did this. Anyway, so much for saving myself $$...I now have a $100 part to buy.

Just wondering it it's plug and play into the hub and that's it.
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Old 10-10-2010, 11:10 AM
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Were you able to get the broke off piece out of the hub?
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Old 10-10-2010, 11:18 AM
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Yes, It came out. There's still a little of the black plastic down in there, but I think I can get it out. I'm so mad that I did that I can't work on it right now. I need to calm down a bit and will head out later. We were going to take the TB on a trip this week, but will most likely rent something now.



I guess it's a little funny. Try to save some money and end up spending more. Oh well. I already ordered the part from Advance Auto...will hopefully be here tomorrow, but maybe Tuesday.
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Old 10-10-2010, 11:31 AM
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As long as you can get all the debris out, it should be a simple install.

Look at the bright side, you got it out, at least you don't have to buy a new hub
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Old 10-10-2010, 11:46 AM
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Old 10-10-2010, 12:01 PM
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Good point. The part was only around $70, so not as bad as I thought.
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Old 10-10-2010, 05:16 PM
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I have a scheduled appt. tomorrow morning for an alignment. If I cap over the sensor cavity with the broken sensor (so no dust gets in the hub) can I drive it without a functioning sensor? The new sensor may not get in until tomorrow or Tuesday.
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Old 10-10-2010, 05:27 PM
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Sure can. It would be the same as if the sensor developed an open circuit. It will prob turn the abs light on.
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Old 10-11-2010, 12:58 PM
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Ok, replaced the sensor today and finished installing the lower ball joint. Went to take it to the shop for alignment and when I get to about 1-2 mph, almost to a stop, the ABS flutters a bit. Also, my wife was wondering why I was fluttering the brakes everytime I went over a bump (she was driving behind me). Of course, I wasn't, so I'm not sure what's up there.

There are not ABS lights on and everything else seems fine. Any ideas? Should I try resetting the ABS?
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Old 10-11-2010, 05:59 PM
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I'm not sure how far you can go without a scan tool. The only things that you can check is that the sensor is in properly and the tone wheel is in good shape. I have ran into tone wheels breaking and doing exactly what you are experiencing.

Other then that it will probably come down to someone getting into the abs module and reading the vss readings and taking it from there.
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