06 chevy with Alison tranny

[Mike_Champion]

Running about 60 mph went to pass , it went to down shift it hesitated and then went on but check engine light came on got through passing but it would not up shift it stayed in 4th gear
Pull over to check the code it was p0700 cleared now truck shift fine was able to Replicate 1 more time but now I can't
Any thoughts on what or why

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[Mike L.]

Need code

 

[Mike_Champion]

Thanks for the reply but Not sure the code on my little code reader was p0700 is there another code your looking for

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[dndj]

The ECM sets P0700 when the TCM (Transmission Control Module) has a code stored. You need a scanner to pull the codes from the TCM, this is the code Mike needs. Many of the cheap OBD2 readers won't pull the TCM codes.

 

[Mike_Champion]

Tks i will find someone that has a scanner that can do that

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