I have a pontiac montana 2000 and the vehicle runs well until I had to make a repair witch involved me having to disconnect a cable from on top of the transmission to make my repair. I reconnected every thing and when i turned the vehicle on the "service engine light came on, I went to autozone and they read the codes p0753, p0758 and p1860. 2 mechanics told me i need a brand new transmission (bull!@#$) well my question is, where exactly is the TCC PWM solenoid located at? in the transmission or out side?

SOURCE: trouble codes

You might want to check for a mouse nest under the Underhood fuse block, seen them chew up wiring under there many times.

SOURCE: service engine soon light on

you need to put it on a computer to find what the code is such as on o2 sensor or a number of other things. once you know the codes you can fix the problem

SOURCE: 1997 blazer sluggish in drive reverse is fine

P0740 is TCC circuit malfunction P0753 is shift solenoid A circuit electrical P0758 is shift solenoid B P1406 is EGR pintle position and P01860 is TCC circuit.

SOURCE: 2002 Sunfire TCC Solenoid replacement

hi..the transaxle converter clutch . tcc. uses a solenoid -operated valve located in the automatic transaxle to mechanically couple the engine flywheel to the output shaft of the transmission through the torque converter.that reduces the slippage loss in the converter.reducing emissions.but check the vss first.which is called the vehicle speed sensor.they both work together .if the vss is not working right it wont call on the tcc.
check this out..
thank u..
rate me..

SOURCE: I recently had a diagnostics done on my 2000 Isuzu

If it is in the solenoid itself, yes. If it is in the wiring or the computer, no. The only way to tell, is to replace the solenoid and turn off the light. Or do some extensive search in the wiring harness.