Check all the tone wheels and sensors. I also believe there is a TSB re.
corrosion at the wheel sensors. I"ll bet you'll find a damaged tone wheel
though.
Larry
"Jaz" > wrote in message
...
>
> In my 95 Tahoe, w/ 150K miles, my ABS system kicks in almost
> constantly when braking at slow speeds and occasionally at higher
> speeds with only moderate braking. It seems to be ever-present when
> pulling into parking spaces or making other slow/short manuvers.
>
> I've only owned the truck for 1 year, and this problem has appearewd
> and slowly gotten worse since then. About six months ago I installed
> new rotors and pads up front.
>
> Any idea how to fix, adjust, or disable? (besides paying a shop)
>
> It may be related to vacuum, as my heater stinks -- I've had to clamp
> the temp control valve during the summer because any hard accel. or
> high speed causes vacuum to drop enough to allow the hot h2o valve to
> open. I couldn't find any vacuum leaks, and there's no obstruction
> (vacuum level seems fine). I think these two probs are unrelated.
>
> TIA
> (please excuse the burp when replying)