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4.0
definitely annoying- Typical Repair Cost:
- $300
- Average Mileage:
- 111,150 miles
- Total Complaints:
- 1 complaints
Most Common Solutions:
- replace knock sensors under intake manifold (1 reports)

engine problem
Helpful websites
- No one has added a helpful site for this 2003 Sierra 2500 problem yet. Be the first!
A D V E R T I S E M E N T S
Check engine light on - code reader says knock sensor. It's a common problem and easy to fix.
- Tttt D., abcd, DE, US