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Chris (aka- Moose)
Chris (aka- Moose), Technician
Category: Transmissions
Satisfied Customers: 1766
Experience:  16 yrs. experience with auto, manual, & CVT drivelines
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Transmissions,Chevy k2500 Hd: I have a 2007 Chevy 2500 with

Customer Question

I have a 2007 Chevy 2500 with a duramax diesel and a Allison trans,it's stuck in third gear and I had my mech friend pull a code of e valve body third gear solenoid stuck off! My truck has a min max tuner and it pulled a dt700 code ,just trying to fig out if it's a solenoid ,or control module issue? My 4 x4 wasn't engaging either. Help please thank you trey
Submitted: 2 years ago.
Category: Transmissions
Expert:  Gary replied 2 years ago.
Welcome! My name is ***** ***** I will do my best to assist you with this problem.
can you tell me the code number he pulled out of the TCM ?
the 700 code is just a code that will set in the computer saying there are codes in the TCM
Customer: replied 2 years ago.
No it was the third gear solenoid stuck off but his computer did not save number?
Expert:  Gary replied 2 years ago.
you cant remember the code ?
there are over 50 codes this can set for this issue
Customer: replied 2 years ago.
Call me(###) ###-####
Expert:  Gary replied 2 years ago.
see if you or your friend can remember or re scan it
we really need to know the code number set to find the problem
Customer: replied 2 years ago.
He is thirty miles away I looked at the snap on scanner and we turned one on and off and the third gears soeilined was off and we could not reset it .cleaed dtc and it stayed off. He said the sol was out .i called him and he said that was the problem,I have a gut feeling it's electrical
Expert:  Gary replied 2 years ago.
these issues come down to the solenoids or the TCM or possibly an internal valve body
Trey to nail this down we need 3 things
the code number it set
a scan tool to communicate with the TCM and the PCM
and a multi meter to see if its a control problem or if its the solenoid or inside the valve body
if you disconnect the battery cables for 5 minutes then touch the battery cables together for 2 minutes then reconnect the battery cables and see if it still does this
Customer: replied 2 years ago.
Ok,my friend is looking for codes as well bbl,ty
Expert:  Gary replied 2 years ago.
ok let me know