Thread: GM DEF 24%
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Old 09-01-2020, 01:36 PM   #1
Vegas Bound
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Drives: 2013 Sparkly Red One
Join Date: Dec 2018
Location: Hospitality State
Posts: 2,558
GM DEF 24%

I have a 2016 2500HD. The DEF monitor is stuck at 24%. Dealership says it is a software reset and not covered by warranty.

Anybody else have this issue?

Something has to be causing it to happen. There are tons of related articles on the web going back several years and GM will not recognize it as a warranty, recall or TSB.

Dealerships charge $150 to diagnose, say there is no part failure and reset the percent monitor.
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