how often should i change my tranny fluid its an automatic thts rebuilt with about 30,000 on it, just wondering because i tend to get on the throttle hard on the weekends, and is there a transmission cooler on my truck?

 

I have seen 30k change intervals listed for these trucks. Fluid, filter and band adjustment.

You should have a trans cooler since your truck is an auto.
The factory cooler is small though, so most will install a larger capacity aftermarket cooler and bypass the stocker all together along with the cooler check valves.

 

Install one of these:

 

every 15K-30K. and +1 to install the biggest cooler you can find and remove the check valve to prevent cooler line blockage with sludge. i also have a remote filter in the area of the check valve that i change every year. it costs almost nothing to change it and you loose very little fluid. it can't hurt.

 

ok were do i get the bigger cooler and where is the check valve everyone is talking about and do i eliminate it or get a bigger one?

 

Check valve delete is in the FAQ/DIY section, as is a free download of the FSM(which has recommended fluid change intervals for more than just the tranny). And a lot of other info btw is in the FAQ/DIY section. It's worth looking. And bigger coolers can be had at places like Jegs, summit, ebay,amazon. You are on the internet right?

 

changing the tranny fluid, auto zone says i can do a complete refill which is 18 quarts or the service one which is 4 quarts and what is the difference?

 

Just doing the filter, and the fluid that comes out with it, is gonna be six quarts or more. The whole trans holds somewhere in the neighborhood of 12 to 18... (don't recall exact number.) Without disassembling the trans, no way to get all the fluid out. (at least, not without damaging the trans.....) Grab six and the filter kit, and a drain plug if you are feeling ambitious... you will be golden.

 

ok cool, it hasnt been changed in prob 50XXX iles but its still pink

 

O and does any ATF + 4 fluid work or does it have to be a certain brand