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Hey all- New to me 2019, 3500 L5P - 40k miles - I,ve only put about 170 miles on truck since I bought it a few weeks back. The other day I was getting on the highway entrance ramp & engine seemed like it stumbled a little & I see the check engine light set. I was close to AZ so they check code -P11dc, # 2 position nox sensor. Truck runs good still & I made a appointment for service this week. Just wondered if any have had this & anything I can check. Hope it is in warranty , (emissions). I was reading about a charge air cooler issue. Also I was trying to read trans temp on DIC & cant find it on there. Anyway Appreciate any help
 

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LTZ dually
Did you find the trans temp yet?

Have you tried putting it in 'tow/haul'?
Does the voltmeter change to a trans temp gauge when you put it in tow.haul?

(different trims do this different -- I'm not 100% sure which display is on an LTZ)

If it doesn't have the video display for the 4 gauges, then you will need to make sure the trans temp dic page is enabled.
When it is, you will be able to scroll thru the DIC pages to select it.
 
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