Allison 6sp: need help asap

B-RAD484

New member
Dec 3, 2010
4
0
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LC NM
I have 06 duramax and i was wondering if i could get some help the other day i went out four wheeling and got high center on my transmission pan and i leaked all my tranny fluid so i shut the truck off and re filled and now it is stuck in 4th gear and it is throwing p0700 and p0102 and after i clear codes works for about 10 feet and pops nasty bak in to fourth gear again


06 lbz duramax 650hp 1100tq smoke switch crazy larry,injectors,blow off valve,air intake,some other mods.
 

B-RAD484

New member
Dec 3, 2010
4
0
0
LC NM
it is really weird i dont think i hurt the valve body but i could be wrong the pan didnt seem like it bent in that far will check them out though could a the filter in side the pan be smashed or bad very confused newbie when it comes to the allison transmissons
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
I'd drop the pan and see what the damage is. While you are in there, it can't hurt to replace the internal filter.

Good luck getting it going again!
 

B-RAD484

New member
Dec 3, 2010
4
0
0
LC NM
well see i dropped the pan today it didnt look ad but then again what is the internal filter supposed to look like mine kinda seem like as if in the middle of the filter it was pushed up against the top of it like it only pinched it in the middle thats how the pan was bent inless thats just how they look?
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
13,715
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Texas!!!
You need to pull the codes out of the TCM. The P0700 is an ECM code indicating the TCM requested to illuminate the MIL. I'm pretty sure the P0102 is some sort of MAF related code.
 

LWATSON

future trans limpers
Jul 30, 2008
2,587
1
36
55
Scotland Neck NC
You probably have bent the pan and upset the filter in a way that its not drawing fluid. I would install a new pan and filter and refill before I cranked the truck again!
 

B-RAD484

New member
Dec 3, 2010
4
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0
LC NM
already did that and it is now still stuck in 4th after i clear codes with the triple dog it gets about 10 feet and slips again into 4th :mad:
 
Dec 2, 2006
1,696
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36
TN
already did that and it is now still stuck in 4th after i clear codes with the triple dog it gets about 10 feet and slips again into 4th :mad:

Well, I don't know where you got your dyno numbers at, but if they hold true you'll be needing a built trans ASAP.

I don't know if the Bullydog will pull the TCM codes, probably better off borrowing or buying a good code scanner.
 

DieselD

New member
Aug 27, 2009
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Virginia
Take out the trans and figure it out. If you got hung up on something offroading you were probably beating on it good and blew something up.
 

GeneralTJI

Turbo Todd
Jun 1, 2010
1,272
0
36
Colorado
06 lbz duramax 650hp 1100tq smoke switch crazy larry,injectors,blow off valve,air intake,some other mods.

Just curious,
What trans build are you running now btw?

What turbo(s)?


g'luck getting it going again....
 

Sparky300dmax

Radio Cat 838
Mar 1, 2011
10
0
0
40
Ontario, Canada
Well, I don't know where you got your dyno numbers at, but if they hold true you'll be needing a built trans ASAP.

I don't know if the Bullydog will pull the TCM codes, probably better off borrowing or buying a good code scanner.

thats what i was thinking too i have a 165hp tune in and im getting all kinds of tranny problems the main issue is similar,sometimes when cold, on start up, i put it in drive and it slips into neutral then crashes into fourth, the engine light comes on with a P0700 Mil request code, i clear it and im good, the other thing that happen is when im driving and i get right on it. it will slip into fourth engine light will come on. and it will stay in fourth even if i stop it starts in fourth untill i clear the code and its good as long as im good :) Thinking my tourque converter may be slipping? Thanks...