Limp mode, codes CO287 and CO283

COCACOLA GOLDFISH

MEMBER
2001 GMC YUKON
5.3L
V8
4WD
AUTOMATIC
160,000 MILES

I was driving my SUV and it went into limp mode. I was throwing codes CO222, CO226, CO265. I replaced the wheel speed sensors and ABS computer. Now it is throwing codes CO287 and CO283. On the computer It also shows all the wheels are 5 mph when parked. The SUV still remains in limp mode.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

If the speed is showing 5 MPH when you are not moving then I suspect you replaced the ABS with a used part?

If that is the case then that is the issue.

We can test the wheel speed sensors using this guide but they are not going to generate voltage on their own to tell the ABS that it is moving so more then likely that module has failed.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

If it proves out that the module is faulty then here is another guide that will help with that:

https://www.2carpros.com/articles/how-to-replace-a-abs-controller

I attached the info for these codes as well so if you want to run through that testing to find the issue then that would work as well.

Let us know what you find with this and we can go from there. Thanks

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