GMC Sierra
engine Problems
We don't have a lot of GMC Sierra engine problems on file — feel free to add yours here. The most common Sierra engine problems occur at 21,000 miles.
The worst model years for engine problems are the 2007 Sierra, 2022 Sierra, and the 2012 Sierra.
Worst GMC Sierra Engine Problems
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#1: Excessive Oil Consumption 2007 Sierra
- Average Cost to Fix:
- N/A
- Average Mileage:
- 36,000 mi
-
#2: Bad Lifters 2022 Sierra
- Average Cost to Fix:
- N/A
- Average Mileage:
- 16,000 mi
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#3: Diesel Leak In Engine Bay, Engine Smoking 2012 Sierra
- Average Cost to Fix:
- N/A
- Average Mileage:
- 12,000 mi