CUCV M1028 Project Part 9 - TH400 Stuck In 1st Gear!

Plenty of people are out there looking for a solution to why their TH400 transmission is stuck in first gear so I put together a little step--by-step guide to troubleshooting the issue. I solved the problem. Unfortunately, I did these steps in the wrong order and wasted time. Hopefully this video will help you avoid that incorrect order of troubleshooting and find your trouble right away!
In this video we'll take a look at the vacuum pump on this 6.2l diesel CUCV M1028.
Next we'll check the Throttle Position Vacuum Regulator Valve, the lines and hoses, the vacuum module, the transmission governor and finally we'll get to what ACTUALLY caused the problem. Stay tuned to the end of the video so see where I made my stupid mistake!

[@hkguitar1984]

Lots a great information here, much appreciated and thank you. I'm just starting to work on my M1009, I've lots to learn.

[@RocknusUrbanCamouflage]

Glad to help. Thank you for watching my videos and taking the time to comment. Best of luck with your M1009. Lots of fun to work on.

[@tod1840]

Thank you for all these tips. I'm working on an 84 1010 right now with issues.

[@davidjohnson6329]

Wow, same problem in my motorhome. Thanks

[@argushoffmann3792]

Great that you survive the zombi apokalypse! Greatings from Banana-Island-Germany! Thanks for your Videos!

[@robertoleeva985]

I just bought a 85 Holiday rambler. It's not shifting out of first. And the oil looks clean. Soooo. I'm going to do every single step that you mentioned in this video.. thank you for taking the time to post this. Thumbs up x 1000 times

[@v8felon]

Thanks thats awesome information 😅

[@ENunes-db2ip]

Great video

[@mblake0420]

Are the wing glass supposed 1 piece or 2 piece? I have both in my 86 m1028.

[@RocknusUrbanCamouflage]

Hi Mblake. All of mine have always been the 2-piece units. Both vent windows on my M1028 are 2-piece. Hope this helps and thanks for the watch and comment!

[@mblake0420]

@@RocknusUrbanCamouflage what vent style is best? Do you know? Thanks

[@socalrunner08]

I love your videos man. Helped me alot. Can you make a video on how to fix the kick down switch. Mines disconnected as well and shorted out.

[@RocknusUrbanCamouflage]

I will absolutely make a video depicting the repair of that kickdown. Parts are already ordered! Should see the video soon. Thank you for watching the vid and taking time to comment. Much obliged!

[@socalrunner08]

@@RocknusUrbanCamouflage thank you for taking your time to help us newbies out

[@NPNelson-X]

I have a 1990 Chevy C1500 6.2 for sale

[@jaywebb3105]

Vacuum line on the modulator value?

[@dieselwrench3621]

It’s been a while glad to see a new video on the cucv and glad you’re doing well 👍

[@RocknusUrbanCamouflage]

Thank you, DieselWrench. Had to take a little hiatus to focus on the actual business. Videos are fun though so I'm glad to find the time to do another one. Thanks for watching and commenting.

[@RDCM1008]

That was a good one!

[@RocknusUrbanCamouflage]

Thank you kindly, Richardoconbully! Appreciate you taking a moment to comment.