GMC Troubleshooting Questions? Ask a Mechanic for Answers
hi there, I am Cam, Can I get your first name please?With your truck, does smoke at idle? How does it run off idle?
I think those codes are not related. B2961 is the key in cylinder alarm. "B0229 is recirc actuator issue. So this is strictly a fuel injector issue.
Derbis, so we can see what each injector is doing off idle. We are looking at the balancing rates. These are changes each injector makes by the computer to keep it idling smooth. With a scanner we look for the balancing rate for each, at idle hot the spec is between -4 and +4, and in drive, -6 to +6. Any outside of that spec need to be replaced. Can you do this?
EFI live may be enough to do that.
Oh, I thought you had EFI live. WE need to have that type scanner to see that data. There is no way around it.