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2012 LT-Service Stabilitrak

11K views 7 replies 6 participants last post by  sheila  
#1 ·
Hello Folks,

I've got the much feared "Service Stabilitrak" error popping up. How do I find which wheel is having problems? I pulled codes, and they were empty. Some sources say to splice in a new ABS sensor, other say the magnetic encoder on the wheel bearing might be bad.

How do I get to the bottom of this without firing the parts gun?

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#3 ·
#4 ·
I'd 1st try disconnecting all 4 speed sensor plugs at the wheel hubs and spraying each end of the plugs with elec. contact cleaner and then smearing both plug ends with dielectric grease and reconnecting. You can access the fronts by simply turning the steering wheel. The rears will require lifting the car.
 
#5 · (Edited)
Hello Folks,

I've got the much feared "Service Stabilitrak" error popping up. How do I find which wheel is having problems? I pulled codes, and they were empty. Some sources say to splice in a new ABS sensor, other say the magnetic encoder on the wheel bearing might be bad.


How do I get to the bottom of this without firing the parts gun?

View attachment 168297




Mario can jump, run, and swim, and he can also collect a variety of power-ups that give him new abilities in super mario 64
If you have the "Service Stabilitrak" error and you have pulled codes that are empty, there are a few things you can do to try to figure out which wheel is having problems:
  1. Check the ABS sensors. The ABS sensors are responsible for detecting the speed of each wheel. If one of the ABS sensors is faulty, it can cause the Stabilitrak system to malfunction. To check the ABS sensors, you can use a multimeter to measure the resistance of each sensor. The resistance should be between 1,000 and 1,500 ohms. If the resistance is outside of this range, the sensor is faulty and needs to be replaced.
  2. Check the magnetic encoder on the wheel bearing. The magnetic encoder is a sensor that is located on the wheel bearing. It is responsible for detecting the position of the wheel. If the magnetic encoder is faulty, it can also cause the Stabilitrak system to malfunction. To check the magnetic encoder, you can use a scan tool to read the data from the encoder. If the data is erratic, the encoder is faulty and needs to be replaced.
  3. Check the wiring harness. The wiring harness is responsible for connecting the ABS sensors and the magnetic encoders to the Stabilitrak control unit. If the wiring harness is damaged, it can cause the Stabilitrak system to malfunction. To check the wiring harness, you can visually inspect it for any damage. If you see any damage, the wiring harness needs to be repaired or replaced.
If you have checked all of the above and you are still unable to find the problem, you may need to take your vehicle to a qualified mechanic for further diagnosis.
 
#7 ·
UPDATE(Solved): So I got another scanner that can read ABS codes. I pulled a code while the error lights were on and it had a C0267 code i.e Low Brake Fluid. I check the reservoir whenever I work on my car, and it's never seemed empty or low.

HOWEVER, it was well below the MAX line on the reservoir. After topping it off, I was able to drive home without that error popping up again. I think that was the issue because it had gotten progressively worse since the pads were wearing away and lowering the reservoir volume.
 
#8 ·
UPDATE(Solved): So I got another scanner that can read ABS codes. I pulled a code while the error lights were on and it had a C0267 code i.e Low Brake Fluid. I check the reservoir whenever I work on my car, and it's never seemed empty or low.

HOWEVER, it was well below the MAX line on the reservoir. After topping it off, I was able to drive home without that error popping up again. I think that was the issue because it had gotten progressively worse since the pads were wearing away and lowering the reservoir volume.
May check your rear calipers for leakage/seepage where the p-brake connects. Look for dampness there, on the inside of the tires and/or a small brake fluid spot under the rear calipers.