:mad: After 140mi of interstate driving, SES light came on. Took to dealer for diagnosis. Results were: Scan test codes, PO700 TCM
Code P1860, TCC Solenoid

Dealer Cleared code and advised me to drive to see if light returns. 34mi later, light returns. Dealer informs me to bring back vehicle for further diagnosis.
The only thing I notice is that it is taking a little longer to shift to overdrive.
Can someone please assist me so I have my s*** together when they tell me what is wrong.

The code is a torque converter code.(1860) Code should be cleared and truck should then be road tested with scanner hooked up. A data stream should be read on the converter clutch application. You will want to see % of apply ( normaly I see 96 to 97 % apply) and then below that you will want to see slippage in rpms. I like to get the Ally into 5th gear, converter clutch applyed. Watch the rpm slippage at steady throttle ( anything over 50 rpm is not acceptable) then give a some part throttle and watch rpm slippage. If slippage increases, you need a converter, and probably a stator bushing in pump cover.

mike

Dealer diagnosed the TCC solenoid. $289 total P & L :mad: :mad: :mad: :mad: :mad:


:Nothing_f

Multiple posting of same topic