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…

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.

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.

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

knfenimore October 21, 2010, 5:16pm 5

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

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

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