This was my daily driver for a few years and always ran great with zero tranny iissues.It has 134k, I bought it with about 100k. Its an automatic. It has a few inches of lift, larger tires, winch. This problem began suddenly about a year and a half ago. Here goes!
- day of problem, I drove it for small trip and came home as usual.
- the girlfriend took it as it was already warm to drop her daughter off somewhere.
- got there, put it in park, left it running.. Dropped kid off at door, got back in, put it in Drive and nothing... All gears are like neutral as of now.
- I arrive, can't find anything obvious wrong besides a blown fuse (tranny fuse under hood) but replacing does not help so I pulled it home with my other truck. Dragging her behind!
- it was getting cold so after only a little troubleshooting and no garage, I had to let it set through the winter.
- I can't stand not driving it any more so I've been all over it for a month or so with no results.

HERE IS WHAT I HAVE DONE SO FAR..
-Two red top optima batteries where shot so I replaced them with a huge marine battery.
- checked every fuse in the truck for good measure
- removed a couple red wires that he had ran to under the passenger seat (went to nothing) But he had one coming out of the fuse box under the hood out of a spot where a resistor type fuse would of went.
- bought and. Installed new transmission control module. Still don't drive..
- hooked up two different types of code readers with no codes read.
- checked tranny fluid level via upper 8mm fill port on drain pan. Lots of fluid pours out! Put it on ramps by using winch and fence post, still lots of fluid pouring out!

This is leading me to believe that the fluid may not be circulating correctly? The only shots in the dark I have come up with are as fallows..
- drop the tranny pan/sump pan, drain the 6-7 quarts of fluid that will come out, replace the filter, gasket, o rings and of course refill.
- shift solenoids? No idea where they are or how to replace but I do know they are $300 ish.
- maybe add some Lucas tranny treatment..
- check cooling lines for fluid flow.. Maybe tranny pump problems
- maybe torque converter problems..

Im obviously all over the place and lost now. I miss my fun ride! Please show me the way.. Thank you!


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When you checked the fluid level, did you do so with the engine running and the truck in park?

When you put the truck in gear and attempt to move, does the speedometer move at all?

If the fluid level is fine with the engine and transmission at operating temp, and you still get no movement, including the speedometer, your trans pump might be gone. To test that, disconnect the transmission oil cooler lines at the transmission cooler, and have them go to buckets. Have an assistant start the truck, you should immediately see a strong flow of ATF into one of the buckets.

To recap:

Moving speedometer in gear, but no truck movement
- broken propshaft, or internal transfer case issue.

No moving speedometer, running hot fluid level low.
- Add fluid to full level, investigate and correct the source of your fluid leak.

No moving speedometer, running hot fluid level ok.
Remove the cooler lines.
- A strong flow means that the pump is ok, and your problem could be a bad torque converter. Turn off truck, and refill fluid to full level.
- A weak/ no flow condition means that the transmission pump has failed and needs replacement.

Good luck.

 

I checked the fluid level with the truck running, in neutral with parking break engaged. Do not think the speedometer is moving but will double check. The idle changes when going through the gears but that's about it. Just makes me crazy that it happened so suddenly. I will check everything you said tomorrow and try to narrow the list. Thank you

 

Your option #3 above will be the most likely route I will end up tomorrow. ..

 

Sorry to ask , but did you try shifting T-case to low and high.

 

Bom makes a good point, didn't even think to mention this since the truck stays put in park.

 

Yes I have. I also forgot to mention it. It goes from low to high as it should. Chime sounds in neutral. Also displays indicator on dash like normal.

 

Could something be wrong at the T case side of the linkage? Would the N chime and dash indicator still work? It shifts and feels like it always has. A little temperamental but goes.

 

Anyhow Racer, I just had a chance to get in the truck. The speedometer does not move at all.

The rpms are normal in P.
Goes up slightly in R.
Goes back down same as P in N.
Up slightly in D,3,2,1.
If that makes any difference at all.

And the fluid level seems high which i don't believe could be possible as I drove it with zero issues for a few years before this happened. Unless it has been too full the entire time I have owned it . it wants to pour out.

In betting when I check these cooling lines, there will not be strong flow if that would also cause it all to rest down low and want to "pour" out.

One more thing to add... The entire time I have owned it, it has had a sort of whine at idle. Always reminded me of a syntrifical clutch on a 4 wheeler. He said it did it the entire time he owned it as well. He owned it for a short time after buying it from the original owner that did all of the work to it which kind of cut off information about the truck for me. Excuse my spelling!

 

If your pump isnt working, then a lot of your fluid will be hanging out around the pan area and not circulating throughout the tranny system (like when the engine is off) making it appear to be over full....Inquiring minds want to know...