My 3.6 GC Limited was built July 7. There was a TSB to flash the PCM in , I believe, August. Some shudder, stutter problems continued. The following was performed last week and appears to have smoothed everything out. That includes hesitation on launch and some shifting roughness in Auto mode. Check TSBs at wk2jeeps.com
GROUP: Vehicle Performance
DATE: September 25, 2010
Flash: MIL Illumination, Sag/Hesitation At Launch
This bulletin involves flash reprogramming the Powertrain Control Module (PCM) with new
2011 (WK) Grand Cherokee
NOTE: This Service Bulletin applies to vehicles equipped with a 3.6L engine (Sales
Code ERB) built before August 17, 2010 (MDH 0817XX).