2002 Chevy Avalanche ABS kicks in at low speed braking.
The ABS kicks in almost every time at low speeds on dry gound. If you didnt konw this was going to happen you would rear end people all the time. I know other people have this problem and I have yet to hear about a solution.
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low speed activation of abs[will not set off code ] can also do brake studder without touching brake usually does it under 5 mph the problem is one of the sensors is dirty or has some corrosion on it ===chevy back in 2000 did a partial recall on the tahoe for the same problem the fix was to remove the sensor and clean it if the corrosion was to bad than sensor was replaced === the problem with no code is u dont know which sensor is causing problem u would need to remove both and check them
One of the sensors has gone bad and needs to be replaced, the other thing to that would also do that is the ABS sensor is dirty or needs to be re gaped to the speed ring on the hub.
There was a issue bulletin with your Tahoe on the ABS activating under 8 km/h.
Good luck and hope this helps, if not clean out the sensor with brake parts cleaner and check the wire harness and ABS sensor bracket. Re gap the sensor to the speed ring hub. Here is the bulletin.
Anti lock Brake (ABS) Activation at Low Speeds (Clean Wheel Speed Sensor Mounting Surface) #03-05-25-007C - (05/16/2006)
2001-2006 Chevrolet Suburban, Tahoe
Sounds like you have a speed sensor with excessive air gap between the sensor and the pick-up wheel. These are usually sealed in the hubs. Check all you hub assemblies for excessive play. Excessive air gap will cause overactive ABS function.
Are both the the abs light and the brake light on ? Usually indicates A bad abs module under the hood in front of the master cylinder if the abs brake come on for no reason yousally while brakeing at low speeds you will feel the pulsation for a few second this is usually corrosin on the hub bearing or a bad abs sensor in the wheel.. A tech with a good scanner can trace the problem to one specifiac wheel hope this helps...
you may want to have someone look at your wheel speed sensors
the may not be reading correctly
if the computer see's that the wheel speed of the two axles are not in sequence when your braking this may cause the abs to kick in and it goes the same when your accelerating but the traction control comes into play(TC)
Its possible that right wheel speed sensor is dropping out early making the truck think that wheel is locking up. That will activate the ABS and let the brake go on the right wheel which will make the vehicle pull slightly left. The only way to know for sure is to watch the wheel speeds on a scanner and see which one is drpping out first and replacing that speed sensor/bearing assembly.
Sounds like a bad ABS sensor in the system. The quick fix is to locate the ABS fuse in your fuse panel, remove this fuse and abs is disabled. Your brake will function normal and it is safe to drive w/o abs until you can have it checked out, keep in mind you will lock you brakes under heavy braking conditions.