AmadosWorker

Tranny will not use 1st gear or overdrive, TC will not lockup either, even with a TC lockup switch installed. if i put truck in 1st still starts in 2nd. Fluid is good color and looks to be at a good level even though its hard to read the dipstick. Truck did this a few months ago, i checked fluid and it was low, added a quart and didnt fix. Woke up next morning and truck was fine.

vzdude

Read these posts. This is more than likey your problem. Get your codes checked to be sure.

https://www.dieseltruckresource.com/...d.php?t=161971

https://www.dieseltruckresource.com/...d.php?t=161837

hamilton71801

I didn't read the threads above but it sounds like your governor transducer/solenoid. Mined would start out in 2nd or 3rd and then not shift through the gears. Be sure and replace them in pairs (just what I've heard) and they cost me @ $250 at the dealer.

AmadosWorker

I blinked out codes using the "turn key on and off method". I got codes 12, 43 and 47. What is code 43 its not listed in my shop book. My buddy has a code reader would that be a better choice to use? My problem sounds a lot like the other post in here "tranny acting up" can anyone tell me if the part numbers i need are the same as his? Governor Pressure Solenoid - 4617210 Transducer - 56028196AD Trans pan seal - 2464324AC Trans Filter - 52118789 Any idea if these parts are readily available or will they take a few days to get?

Jambbii

Using Jambbii's SN. Pulled codes w/ a reader. Had a code about bad tranny relay. Pulled out my jumper that i made for the TC lockup switch and put my tranny relay back in. Truck runs fine now. Could it be a bad jumper or misplaced one for the converter lockup?

Thanks

vzdude

Sounds like it!