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Discussion Starter #1
My 2013 set a P0756 code last night on the way home, and the transmission was acting funny. Any ideas as to whether or not this is covered by the Voltec warranty? Hoping for some goodwill assistance as I am 700 miles over on my Voltec warranty and my powertrain expired in October of last year. Hope the fix doesn't get too expensive.
 

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This is a transmission issue. It could be as simple as replacing the TCM or as complex as replacing the transmission. Both are expensive propositions.
 

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From the diagnostics on it it is likely either a solenoid (part of a large assembly that includes the TCM) or the valve body. So you are correct, neither looks to be an inexpensive repair.
 
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