Duramax Lifetime Supporter
Join Date: Oct 2016
Location: Maurice, LA
My decision would be heavily weighted towards the 14.
The early LMLs had more issues that were resolved by 14. Also there is an updated/upgraded CP4 I understand ad it may be in the 14, but it is certainly not in the 11.
Just my .02
2008 Silverado 2500HD CCSB LTZ Diesel
FASS 95 Lift Pump (with Baldwin filters), Edge Insight CTS Monitor on a Windshield Mount, Nicktane Fuel Filter Adapter w/ CAT 306-9199 UHE tertiary fuel filter, Bilstein 5100 Stock Height, Bushwacker Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, Dorman PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags.