After I had the recall performed during a routine visit, I experienced the prob with 4lo. I brought it back a few weeks later, got charged a $126.01 diagnostic fee and was told that I had to get a new actuator at the cost of ~$800 parts and labor. This was after I even told the service adviser and tech to just try clearing the codes, to which they said they already did. I made a complaint with Jeep corporate as my warranty had also just expired and was offered to have the part replaced at a cost of $100.
So I went online, bought a Superchips Flashpaq and cleared the codes myself within minutes of it coming out of the box. Called Jeep up and spoke with my case manager who refunded my $126.01 diagnostic fee after I told them it was all fixed. Its been over 4 weeks and I been able to get into 4-lo every time I test it, which is every 1-2 days.
I will never buy a new Jeep. I will only buy them used and out of warranty going forward as I have had nothing but problems dealing with the retards at the dealership.
2008 Grand Cherokee (WK)- 5.7l HEMI. OME HD Lift, Superchips Tune w/ ATT, aFe Intake, Flowmaster 44