Abs reluctor 2006 trailblazer. Inside diff. I need installation advice. Goes in from inside diff, or wheel bearing side ?

You omitted to say whether the abs reluctor is mounted on the hub or within the wheel bearing?

Later types often have the reluctor situated in the wheel bearing. The earlier bearing is likely to be dimensionally identical and usually will fit the hub without problems but as the reluctor is absent the abs sensor will not produce a signal.

If your car was manufactured near a change point it is possible you have been supplied with the wrong bearing. This has happened to me on multiple occasions in a wide variety of parts and vehicle brands.

on cars that have bolt on bearing/hub assembly, it is on the inside of the wheel bearing assembly- it is magnetic and needs no cleaning. ill see it- other cars, check inside of wheel- look for a wire to the hub centre and you will see one on each wheel for 4w abs light could also mean bad abs module- you need to pull the code to know for sure

the jaguar front wheel bearing comes complete with a abs sensor and bearing cover if someone has removed the cover it sounds like the air gap between sensor and the reluctor ring is to great or has someone renewed just bearing and not the hub unit like you are ment to do? have a good look at the rear of the bearing cover.

tone ring
join a trailblazer forum and post there find with google

look at the front wheel speed sensors and look at the reluctor rings on the front shafts they crack and throw off the speed to the abs module

wheel bearings could have been installed incorrectly(backwards). The reluctor ring is part of the bearing seal assy and the the abs wheel sensor is not reading it.

I see a few problems with advice given here. The first is the statement made there is a "sensing plate" at each wheel that the abs sensor reads off of to generate a signal. That is incorrect. Some cars use a tone ring on the end of the C.V. joint that lines up under the sensor. When the axle spins under the sensor, the sensor reads the notches (or spaces) between the teeth on the ring. Washing this would be pointless because the sensor senses MAGNETISM which can't be washed or cleaned. The other statement jumps straight from "...if it's not the wheel speed sensor then it possibly could be a abs control module...". Here is the real deal. These Mini Coopers (like many other cars these days) have eliminated the use of a tone ring on the axle. It is all integral with the wheel bearing now. The sensor is mounted in the hub/steering knuckle, and the face of the sensor that reads the signal is facing the inside of the wheel bearing. On this inside edge of the bearing is a reluctor/tone ring that spins when the wheel is turning. The sensor is able to generate an AC signal while the wheel is spinning. Each wheel does the same thing. If all four wheels are spinning at the same speed the signals should be the same voltage output (or very very close). When the abs controller sees one or more wheels change speed according to what input it gets from each wheel speed sensor, the abs controller interprets that as a wheel locking up (or in the case of traction control, spinning or burning rubber). So in the case of wheel lock-up, the abs module becomes active and the pump comes to life distributing the correct amount of hydraulic pressure to each wheel to prevent lock-up and allow the wheel(s) that it believes are locking up to come back up to the same speed as the others, while still applying the brakes on those wheels. In the case of wheel spin, the pump might become activated and apply brake pressure to the wheel it sees rotating faster than the others to bring it back where it needs to be. Take everything you read on the internet with a grain of salt. Jumping from a relatively cheap wheel speed sensor or bearing assembly, to a $2,000.00 abs control module would be a costly mistake.

hi these are pressed into place inside the hub so the actual bearing needs a press to install it, but you can remove the hub etc yourself to make job a bit cheaper, just unbolt wheel, remove brake disk via the 2xbolts and possibly the abs sensor and anything else in the way (certain models have diff setups) and drop into a garage, then repeat to install. If you have hub removed and ready to go yourself you will usually save around $250 hope this helps

the most common cause is wheel speed sensor or sensor wiring not reading proper wheel speed.it is also possible the reluctor wheel inside front bearing is clogged with rust and debris and unable to send magnetic pulse. This can be tested with scanner to determine wheel in question.ohm meter can be used to test sensor and reluctor pulse.

There are speed sensors for the abs in the front wheel bearing assemblies. Rust builds up and changes the air gap between the speed sensor and the reluctor ring inside of the hub. The rust needs to be cleaned away to restore the proper air gap it fix the problem.