So I bought an '05 DC 4x4. It seems to not want to shift into overdrive unless I'm accelerating very gently. If I accelerate any faster than grandma speed, even when I get to about 55-60 and just cruise, it still doesn't like to shift into overdrive. Sometimes it will after a few seconds other times I get annoyed and push the button to disengage it then turn it back on.
The truck has straight pipes with no muffler. It may be 3" pipe. I haven't measured. I also have 285/70 R17's on it. Would either of these things cause a shifting problem? I plan to put a stock cat back exhaust on soon, but will a simple transmission drain fix it? It has 125K on it now.
Thanks for any help.
The truck has straight pipes with no muffler. It may be 3" pipe. I haven't measured. I also have 285/70 R17's on it. Would either of these things cause a shifting problem? I plan to put a stock cat back exhaust on soon, but will a simple transmission drain fix it? It has 125K on it now.
Thanks for any help.

