Hello folks - new to the forum - have a question about our 'new' 2011 Suburban 2500.

It runs and drives very well, which is why we bought it, however the 6.0l engine seems to have an intermittent 'flutter/miss' in gear at idle. It has 163k miles on the clock and doesn't drip a drop of anything - the PO seems to have taken good care of it. Power is good, no other issues, and I'm seeing that this 'flutter/miss' is considered normal with these 6.0l engines?, and wanted to try to get some confirmation. The miss seems to be just like a bad set of plugs and we're digging into the service records to see if/when the plugs and wires have been replaced, but there is no apparent miss under load/cruising along on the highway. Fuel mileage is right around 13 mpg average.

Would appreciate any thoughts.

Cheers, and happy holidays!
- Sam

 

Try cleaning the throttle body plate and body out. From what I read, the 6.0 seems to be pretty sensitive to that compared to other vehicles/motors.

 

Thanks much - I'll give that a try, and I'll report back on the results.

Cheers
- Sam