Code C0226?

WILL11177

MEMBER
2002 GMC SIERRA
5.3L
V8
4WD
AUTOMATIC
250,000 MILES

Truck starts and runs but in 3-5 minutes jumps out of gear to neutral. When I shut it off and restart it in 30 seconds to a min, it will drive again but within a couple of minutes it will get out of gear again. And switching to lower gears manually or 4x4 doesn't change anything. I changed the wheel speed sensor, but it remains the same. Thanks for any input.

Saturday, February 15th, 2025 AT 3:17 PM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Hi,

I need you to check if the wheel speed sensors are producing a voltage signal. Although the sensors are new, there could be an issue with a tone ring and the sensor isn't producing a signal.

Here is a link that provides directions for testing. You can do it this way or if you have a live data scanner, check to see if the sensors are all signaling the same.

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

Note, the link shows how to test the sensor and also test to confirm it is putting out voltage.

Let me know.

Joe

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Sunday, February 16th, 2025 AT 8:50 PM