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Hello, my name is***** and thanks for your question.
How is the 3/4 shift? Also need to know what transmission if you can provide the VIN# ***** on the door label there will be a code under the letters TR.
U = 4R70W
E = 4R100
still here sorry for the delay
Usually P1783 solenoid code is caused by transmission slippage during the 3/4 shift. Does the fluid smell burnt or is it just dark?
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.
Would you like me to try and help?
Based on your fluid color that is not that old this slippage issue is going to require an overhaul to address.
Hello again Chris here,