Before I purchased my 2002 Denali (a few weeks ago) I test drove it for a weekend and noticed that it had a bad front driver's side wheel bearing. I pointed this out to the dealer and he says he had it replaced. In fact, I drove the Denali to the shop that "did the work" and the dealer picked me up and drove me back to my other car.
That said, I've learned in life that it's hard to trust anyone and that things aren't always what they seem... so I have no idea what, if anything, was really done to the Denali after I dropped it off. They may have just lubed up the bearing to make it be quiet long enough for me to think it was ok, sign the papers, and then it would be my problem.
This morning was the first time that we have had rain since I bought the truck. As I was turning onto a side street and applying light pressure to the brakes, I felt the ABS kick in and pulse the brakes. I thought it was extremely odd for ABS to come on at such a low speed so I made a note to come here and search for any typical ABS issues.
The ABS kicked in a second time when I was pulling into my parking lot at work, on a slight downhill slope, while I had the wheel cut to the left again. By this point I was pretty convinced that something wasn't right with the antilock brakes.
After searching the forums here I found quite a few threads dealing with the low-speed ABS recall. One thread in particular mentioned that if the problem is intermittent, then it is probably just a dirty ABS sensor and a thorough cleaning will fix it.
However the same thread also stated that if the ABS is kicking in more frequently, then it's probably a bad wheel bearing causing the hall effect sensor to read inaccurate data.
My question is this:
Supposing that I just had the wheel hub bearing replaced, I am going to pull the wheel off the truck tonight and make sure that I see nice shiny new parts instead of rusty old parts.
If the wheel hub bearing was indeed replaced, would you folks then recommend that I take the truck back to the shop that did the work and ask them to verify that they did not damage the ABS sensor in any way? Or should I just go ahead and pull the sensor myself and clean it up?
I have NOT noticed the ABS kicking in on dry pavement! Only twice now on slightly wet pavement, but at speeds much slower and with far lighter foot pressure on the brake pedal than I would have expected to activate the ABS.
I'd appreciate your thoughts on the issue.
Edited by Titanic, 12 December 2006 - 11:28 AM.