P0756 Chevrolet -and cpde 0014

Question

05 trailblazer codes 0014 @0756 just changed trans fluid and filter due to poor shifting seems like not shifting into overdrive?

Answer 1

P0756  2-3 shift solenoid valve performance

This code is associated with plugging of the valve body or its spacer plate,it is imporatnt to know when the code set, and if there is any other transmission codes that set with this, For now check its fuse in the engine fuse box listed as IGN 0 which is a 10 amp fuse replace if open. P0756 is known as a performance code and is associated with a mechanical condition. seals of other shift solenoid can leak and cause this code and flushing the transmission fluid does not really help at all. removing the valve body and replacing its spacer plate may be on fix.