I have been having this issue in driver front side since Feb. 2010. I’ve had the ABS sensor and bearing in this wheel replaced twice; also all 4 wheels’ brake pads, rotors and caliphers replaced; parking brake replaced. My mechanic (not dealer) is master mechanic and has 3 other mechanics in a forum…

It seems that you have reached the end of your “master mechanics” abilities. If I were you I would find another set of eyes to peruse the situation.

I guess I should have been a little more specific - the “grinding and grabbing” is really the ABS pump kicking in when it shouldn’t.

Could be the rubber brake line is colapsing internally and keeping pressure on the caliper when the brakes are released. I would replace both.

I had the exact same issue with my 2004 Pontiac Grand Prix, it was diagnosed with a bad wheel bearing ( where the sensor was BTW) and no more issues, mine has 160,000 miles on it and was a $200 fix

How old are your tires? And are there any differences side to side? It is possible to end up with tires of different diameter - even if they’re the same size tire - that trigger ABS activity. I don’t think this is very common, but I have experienced it myself (and on a GM vehicle). In my case it…

Has Anybody Consulted The GM Technical Service Bulletin Pertaining To The ABS Light And A Revised ABS Wheel Speed Sensor Jumper Wiring Harness ? It Includes The 2001 - 2004 Grand Prix Models. The harness part numbers (R & L available) are listed and instructions for splicing. Don’t know if this wi…

Did The Mechanic “Repair” The Worn Wires ? For certain problems, a GM dealer might be the best place to go. This could be one of those. CSA

2004 Grand Prix - ABS/Traction Control Problem won't stop

Maintenance/Repairs

Xebadaih October 20, 2010, 10:35pm 2

Grinding and grabbing brakes would not have anything to do with the ABS system. If you have a team of mechanics working on this car and they can’t fix your problem I doubt any online forum is going to figure it out for you.

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2004 Grand Prix - ABS/Traction Control Problem won't stop

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