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Erik Neddo

Service 4wd light

Question

My truck keeps getting message service 4wd. Just changed the fluid on it. Still happen. Could it be the actuator or something else?

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Don't know what model/year your truck is but there is a software problem with some that cause a DTC to set and the Service 4WD message to be displayed. The truck also "locks" in 4Hi and cannot exit this mode until the DTC has been cleared.

 

There is a service update which consists of reprogramming the TCCM. See this...

 

https://gm.oemdtc.com/7291/28770-service-update-4wd-ips-drift-dtc-c0398-4hi-lock-up-2015-2016-cadillac-chevrolet-gmc

 

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When it was serviced, it might need its codes cleared, or maybe it’s not put together right and sensors are indicating an issue.

Get it looked @ ASAP


Sent from my iPhone using Tapatalk

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