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I have an 04.5 2500 stock truck automatic trans. Under light acceleration i get the up-down shift really quick. This has happened only a couple of times and only when i am pulling camper. I also have noticed the trans not wanting to shift out of first at usual shift point rpms. I can let off throttle and it will shift. This has also happened only a few times. Yesterday i got in to go to work and truck will not shift out of first at all. I tried tow mode, hard acceleration, shifting up throught the gears manually and still will not shift out of first gear. This has all happend within the last month. Is my tranny going bad or might there be some sensor going out. Never have had any problems with trans before. Any help will be greatly appreciated.
Thanks
kw

 

Here are a couple of links to parts u need: a governor pressure sensor, and a governor pressure solenoid. You can install them yourself, drain the tranny fluid, remove filter for access.

http://www.transmissionpartsusa.com/...-00053397a.htm
http://www.suncoastconverters.com/do..._products.html

On the second link, click on components, and then governor pressure conversion upgrade.

This should fix you up. Jess

EDIT: It is possible your TV(throttle valve)controller is faulty, your 04.5 is different than my 03, someone with an 04.5 will have to help with that, but usually the above is the cure.

 

could this have anything to do with the apps sensor. i replaced it and thats when i started seeing the trans act up. it was not a oem apps it was an aftermarket. contacted the seller and he didnot think it was the apps
thanks

 

Both years use the same thing, a TV cable


The symptoms described correlate to a stock gov pressure solenoid. I would replace it and the pressure transducer before chasing too many more problems.

 

Well, if it started acting up after you replaced the APPS, then I would say there is a good chance it is the culprit. My 03 has an engine mounted APPS, I also replaced it with an aftermarket unit from Timbo, it had to be calibrated.

Your 04.5 does not have an engine mounted APPS, 'no_6_oh_no' seems to believe we have the same TV setup..... I do not think so, but I am not sure, I thought your TV controller was under the driver's side battery where my cruise control servo sits.

My truck was doing the rapid upshift, downshift between 1st & 2nd at light throttle, amongst other wierd behavior. I ordered the parts for the trans and an APPS, the APPS arrived 1st, so that's what got installed 1st. Stopped all the hunting and bs behavior. I will install the other parts next tranny service.

About 90% of the time, it is the governor pressure solenoid and sensor like no_6_oh_no stated. Try calibrating your APPS first, since you already have it, not sure how yours is done.

 

All automatic trucks have an engine mounted APPS, only the manuals had the APPS under the battery. The engine mounted APPS is used in conjunction with a TV cable as thats the bets place to run it to.

The TTVA motor on the trans and the APPS moved to the firewall did not debut until MY05. A bad APPS generally does not cause the hang in gear problems like the OP is seeing, the other symptoms sometimes but not with the frequency of the gov solenoid. It depends on where the shuttle is also. If its a 1-2 shuttle it usually the gove solenoid, a 2-3 shuttle could be that or a band needing adjustment or leakage in the front servo.

 

My apps is on the side of the engine, up front. I also bought the apps Timbo sells. I have emailed Timbo and he does not think adjusting the apps any more will help. I thought it odd the trans started doing this after apps replacement. The apps controls throtle, does throttle postion,Tv cable, have anything to do with trans shift. I am going to get gov. solenoid and pressure transducer and put in to see if this cures problem. If not them I will look into the apps thing. Thanks for the help

 

Both do, the APPS thru what the ECU decides to set gov pressure at based on APPS position and speed, the TV cable thru how much rise in gov pressure at a certain throttle position is needed to make the shift happen.

Since you changed one parameter you might want to play with the TV setting and see if it influences anything.

 

how do i adjust tv setting thanks

 

Look at the bell crank where the throttle cable hooks up, you should see another cable inboard of the throttle. Just back of the mount for the housing is a tab that I believe pops up, this will allow the housing to slide back and forth.

I usually set the cable so it has about 1/8 inch slack at WOT then adjust from there. If its too tight and shift points too high add slack to the cable by sliding the housing with the tab popped out then set it and try again.

 

I stand corrected, I really believed 04 was the last year for the engine mounted APPS. I hope you get it resolved, my going through similar issues, I know how frustrating it can be.

If you move your TV cable towards the firewall, it will hold each gear longer. I had to remove my intake horn the first time I adjusted mine, just to get a better look at the cable release, after I figured that out, now I could do it with my eyes closed. Mark the cable first so you know it's original position, I used a silver sharpie, take your index finger and slide it under the white plastic release, gently pull down and towards the inner fender well, you will feel it release and start to slide. Now you can adjust the cable, you will notice the cable has little grooves 1/8" apart, that the white plastic release snaps onto, so you can adjust one groove at a time, that's why I recommend marking the cable first. Since yours is holding 1st gear too long, slide the cable into the APPS, away from the firewall. I only had to move mine 1 groove.

 

WOw...this is a GREAT tip. My tranny has been hanging horribly between first and second even after replacing the gov transducer and solenoid, adjusting the bands, etc. I thought I would need a full on rebuild. Last night by accident I stumbled on this thread while searching the net for used trannies. Took 5 minutes to adjust the cable in one click and it was an IMMEDIATE difference. Still a bit of a shuttle under load, adjust one more notch, and its like it was stock! I can now go from a dead stop and WOT through all the gears without lifting. THANKS man....I wish I found this 4 months ago. I've been limping this truck for easily that long and this fixed it. To ANYONE WHO HAS THE 1-2 SHUTTLE SHIFT, TRY THIS FIRST. ITS FREE and if it doesn't work, then buy the transducer and solenoid...

 

Can anyone tell me where this is located at on a 05'. i have looked but cant seem to find it.

 

I'm interested too, on an '06. Having the same issues and would like to try prior to the Governor Solenoid and Shift Kit.

Not sure what the bell crank is...

 

You can look forever and never find it on your trucks.

The TV cable was replaced with the TTVA motor in MY2005.

Here is one way to adjust the TTVA motor to do the same thing the TV cable does on the older trucks.

Remove the TTVA
Remove lower cover - Metal cover that is clamped with metal tangs. Remove cover carefully so the gears do not fall out.
If you turn the shaft counterclockwise, looking at the actuator up side down, it can result in codes 1751 and 1754.
Adjusted the shaft one tooth CLOCKWISE.