Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi there, I am Cam. Can I get your first name please?
Can you also post your Vin and tell me if your system has the DPF delete program in it?
I am thinking you have a failed injector. That would cause the smoke, it would cause the low economy. Which one will take a scanner to find.It may also be possible that the injection pump has failed. Some had an issue with a ceramic ball inside the pump failing. If this is the case Tim, then a whole pump, and injectors will be needed. I hope it is only a single injector.