2021 Silverado Duramax 3.0L DEF Sensor Issue

[HumbertoD]

I have a 2021 At4 3.0 diesel truck.  I have about 6700 miles on it, I have used about 16 gallons of DEF, which seems very abnormal.  We went camping pulling a 6000lb camping trailer.  The engine light came on with an emission service code. The cooling fan was also making some strange noise. I took the truck to the dealership to have it inspected. They told me that the truck needs a new Nox sensor, they also found that the water pump was damaged and it also has to be replaced. I was told that the nox sensor is on back order and It’s supposed to take about 3 weeks for them to get the parts. It’s been 2 weeks and no parts yet.  It’s very disappointing to spend 70k on a truck and have these issues a few months later.

[kevin.andrew.harrison]

I’m having the same issue, and about to pull camper several times this week 

 

Def problem  

[GMCustomerService]

On 4/9/2023 at 8:24 PM, kevin.andrew.harrison said:

I’m having the same issue, and about to pull camper several times this week 

 

Def problem  

This is certainly not what we like to hear, kevin.andrew.harrison.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your truck. To do so, please send an email to [email protected] with ATTN: kevin.andrew.harrison/GM Trucks in the subject line.

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