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Def Gauge Doesn't Show Full
2023 GMC Sierra 3500
This problem may be covered under warranty. Ask your GMC dealer.
10.0
really awful- Typical Repair Cost:
- No data
- Average Mileage:
- 0 miles
- Total Complaints:
- 1 complaints
exhaust system problem
Helpful websites
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A D V E R T I S E M E N T S
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