there is a tsb on that for rams replace speed sensor in the trans and all will be well
edit
just saw it was 4wd the speed sensor might be on the transfer case
I wouldn't go that far, but you have the economy in the shitter your about to go bankrupt I mean how many people can really afford 60-100+k car depending on options. its a smart move by gm.
if the have lost the card with the code that is in the owners manual you either tilt forward or remove the seat and the code is printed on the body security module its on the driver side rear of the cab
wherever you decide to get it done have the guy squirt some dye in it so you can find the leak and fix it then you won't need to get it charged every summer
you can get recharged at ntb for around $100
fucking bleeding jesus christ on a crutch,don't post again untill you know when to use HERE and when to use HEAR correctly your in high school for fucks sake the shit should be fresh in your mind.