2010 duramax allison 6 spd p0708

[shane1]

Hi I have a customers truck that has just started throwing a p0708 fault code, im guessing its either the wiring harness or the range switch in the trans , but how do I prove it? does anyone have a pinout from the plug on the trans or a wiring diagram? id just replace everything except here in Australia parts aren't that easy to come across.
any advice would be appreciated
Cheers Shane

 

[Mike L.]

Hi I have a customers truck that has just started throwing a p0708 fault code, im guessing its either the wiring harness or the range switch in the trans , but how do I prove it? does anyone have a pinout from the plug on the trans or a wiring diagram? id just replace everything except here in Australia parts aren't that easy to come across.
any advice would be appreciated
Cheers Shane

Need more info.

 

[shane1]

it randomly starts to flash the line under the gear position and wont select any gears. Key on and off a few times and it kicks back into life. have the scan tool hooked up to it now but it wont play up grrr. How is the dash display activated does it work off the range switch in the trans as well, it always shows the correct selected gear just the line flashes and it wont engage anything and says shift denied.

 

[Mike L.]

Try another TCM first.

 

[shane1]

do the tcm's fail ? are all the A50 2009+ tcms interchangeable (I can flash the tunes between them ).
if they do fail is it a pcb issue that can be repaired?
thx for the help

 

[NC-smokinlmm]

Temporarily ground the tcm case and see if it fixes the issue. The tcm's have a weak grounding system that can be affected by a stray spark or arc.

 

[pat5001]

Fix?

Any fix to this problem?

 

[Mike L.]

Been a lot of low post guys looking for help while they are charging big money to fix these things and want help. These guy will never contribute here. They are mooches.
From now on, unless you have a decent post count and a record of contributing to this forum, I will not help you. I suggest the membership here do the same. We are being used by morons.

 

[TheBac]

Ive been wondering when you would finally say, "Ive had enough", Mike. Funny part is, they'll be the ones acting offended that you wont help 'em.
I dont understand that mentality.

 

[Evan@InglewoodTrans]

Been a lot of low post guys looking for help while they are charging big money to fix these things and want help. These guy will never contribute here. They are mooches.
From now on, unless you have a decent post count and a record of contributing to this forum, I will not help you. I suggest the membership here do the same. We are being used by morons.

Great idea I've started doing it on the phone. I've always tried to help everyone I can but for now on unless it's customer I'm not helping anymore. There is only so much time in the day and it can't wasted on people doing things they shouldn't be. It's out of control. Everyone has few honest questions which we all do at some point but "builders" not knowing the simplist diagnostics is rediculous.

 

[Chevy1925]

Already been on this train of thought for a while

 

[Hambone]

"I changed my oil and swapped a battery once that makes me mechanic right?" :roflmao: