10.0

really awful
Typical Repair Cost:
No data
Average Mileage:
0 miles
Total Complaints:
1 complaints

Most common solutions:

  1. just started working one day (1 reports)
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problem #1

Mar 222023

Sierra 3500 Denali 6.6L Turbo Diesel

  • Automatic transmission
  • 0 miles

After purchasing the truck, before leaving the dealership, I noticed the DEF wasn't showing full. The salesman filled it and it overflowed, but it still didn't show full. I filled it multiple times, but still never showed full. Then one day, after driving on bumpy roads, it just started working. However, I have not filled it completely yet, recently. This is a serious issue because if you run out of DEF, the truck will go into limp mode and could leave you stranded.

- Pete J., Pasco, WA, US

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