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Posted

2020 Sierra 3.0 Duramax.  I know for a fact that the DEF tank is at about 1/2 capacity.  The DEF gauge has going from the correct reading to showing full - which is very inaccurate.

Anyone have this problem?

Hoping someone can shed light on this before I take it to the local GMC dealer and they give me the usual dumb look on their face.

 

Thanks - J Tab

 

Posted

Gauge is also trying to act as a range estimator.

 

Like the estimator for fuel range, it depends on 'recent' rate of consumption. 

 

Yes, it annoys everyone.

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