06 chevy with Alison tranny

Mike_Champion

New member
Oct 13, 2014
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0
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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_Champion

New member
Oct 13, 2014
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Thanks for the reply but Not sure the code on my little code reader was p0700 is there another code your looking for20201221_111011.jpg

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dndj

Boost!
Apr 13, 2019
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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.