Has anyone had to replace or repair the front diff actuator? Mine has the flashing green 4x4 light and wont engage 4 wheel drive. Dealer has told me its the front diff actuator not working. They want over $2000 to repair it. They say the front diff has to be completely removed, i did see a 2nd gen video of it being removed without removing the diff anyone know if its the same. ANY HELP WOULD BE GREATLY APPRECIATED !