truck wont go in drive or reverse - Diesel Bombers

Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

LinkBack Thread Tools Search this Thread
Old 03-05-2018, 07:13 PM
Thread Starter
Join Date: Mar 2018
Posts: 1
Default truck wont go in drive or reverse

Hey everyone, newbie to the forum! Got an 05 chevy 2500 hd with the Allison trans. 150k miles. Had a snow storm 3 days ago, so the 4x4 got worked hard for the first time in awhile. Then was parked for a day and a half. Jump in the truck this morning, put er in reverse and nothing, go for drive and nothing, same goes for all the gears. Switched between 4H and L, still nothing. The CEL is throwing these codes..P0700, P0843, P0841. Did some digging and came up with these possible causes.. low trans fluid, spin on filter needs changing, internal valves are stuck, or the nsbu switch needs replacing. The dash lights for the gear selector burned out years ago, so I cant tell if the bar is flashing to indicate bad nsbu. Trans fluid level was checked a couple months ago and was good, but is in need of changing. Seems to me that the snow storm may have done the nsbu in, so picking one up tomorrow. Unfortunately its Detroit diesel and not the Allison replacement. Hopefully that's not going to be a problem. Anyone have any experience with this problem? Any advice would be greatly appreciated! Thanks in advance!
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -5. The time now is 05:54 PM.

© 2018 MH Sub I, LLC dba Internet Brands
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.