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Smoke Coming Into Cab
2012 GMC Sierra 2500
This problem may be covered under warranty. Ask your GMC dealer.
10.0
really awful- Typical Repair Cost:
- No data
- Average Mileage:
- 50,000 miles
- Total Complaints:
- 1 complaints
Most Common Solutions:
- not sure (1 reports)
exhaust system problem
Helpful websites
- No one has added a helpful site for this 2012 Sierra 2500 problem yet. Be the first!
A D V E R T I S E M E N T S
I have taken it to the dealer in Lewes, De.. could not replicate the problem was my answer. I am now working with another dealership in Dover.
The smoke is from diesel being sprayed or dripping on the exhaust pipes. You can see the stain, but we think it may be causing more issues than just the bad smoke. We now have indicators that coolant is leaking into the heads. (new complaint but I think connected)
Smoke comes out of the rear exhaust more often, not blue smoke more gray.
- Shaun M., Millsboro, DE, US