codes

[duramaxmt]

I have a 2009 gmc duramax has a po706 code po708 and stabilitrack lite on and hard shifts any help would be appreciated Thanks Dan

 

[Mike L.]

Maybe bad TCM.

 

[05_LLY]

From my experience your tcm had crapped out, I see probably handful or two a year, all have been 09-12 trucks with 10-11 being the most common it seems.

 

[duramaxmt]

If I replace the tcm do I have to have a dealer reprogram it?

 

[Mike L.]

If I replace the tcm do I have to have a dealer reprogram it?

Yes

 

[duramaxmt]

Thanks should I buy from the dealer or aftermarket?

 

[Mike L.]

Try SoCalDiesel first

 

[duramaxmt]

replaced tcm so far so good after the 2 codes additional problem showed up trans locked up skided tires acted like it was going into reverse an drive at the same time thanks for all the help. Dan