My 19 doesn't auto lock every once and a while, sometimes it seems like if I leave the door open for a extended period of time it won't lock. Not very often.
Tom
So a timely post... I just called my dealer because I am close to 90,000 miles on my 19 6.2 truck. I asked them about transmission fluid and filter change.
They said they have a 100K service package they recommend for $1249.00.
It includes the following:
Trans
Front and rear differential
Transfer case
Radiator
Brake fluid
Engine Oil
It seems like a lot of money, they said it takes them most of the day to complete.
Tg