ABS Sensor register 2mph in Park

ZipTie-Z71 · Oct 1, 2017

Hi, I bought a 2006 Avalanche with issue with traction control that starts up at first acceleration on dry conditions. On investigation I found that all abs sensors are stuck on 2mph in park. Throws no codes etc. So I'm guessing it's abs module problem or maybe connections. Any input would be appreciated

MS03 2500 · Oct 1, 2017

Try unplugging one of the sensors and see what it reads

ZipTie-Z71 · Oct 2, 2017

Might try it probably just throw a code for the sensor.

ZipTie-Z71 · Oct 2, 2017

Looks like it might be normal for that truck....but 2000 chev truck wasnt likebthat, go figure. Anyways I did the test again I noticed that there was a delayed reaction to left front abs sensor...so must be dirty or needs to be replaced

cadboy1 · Oct 12, 2017

Sound like rust jacking. All my Avalanches had the problem and my current one, an 04 2500, just started the problem where ABS engages on dry pavement at 1 or 2 mph while coming to a stop. The wheel hub rusts and the rusts "jacks" the abs sensor away from the hub giving false readings.

ZipTie-Z71 · Oct 12, 2017

Cleaned up the left hand sensor and dirt around it and works good now. Bit of a hassle to do it but cost me nothing

JohnnieMo · Oct 13, 2017

cadboy1 said:
Sound like rust jacking. All my Avalanches had the problem and my current one, an 04 2500, just started the problem where ABS engages on dry pavement at 1 or 2 mph while coming to a stop. The wheel hub rusts and the rusts "jacks" the abs sensor away from the hub giving false readings.

You're my hero! I just picked up a 2006 Duramax and it is presenting this exact problem. Also shoots some codes. I originally ruled out the sensor as the hubs were previously replaced..... Now I'm gonna double check.

ZipTie-Z71 · Oct 14, 2017

Could be a lose abs plug wire or broken. But have a 2006 Uplander(pain in ass) that my kids drive, throwing given me abs sensor problems intermediately, ended up the sensor gave up the ghost.