What is the code no. You came up with. Is it in between P0750-PO754
Check these sensors, coolant temperature, throttle position, vehicle speed sensors-these sensors influence the tranny operations such as overdirve up/down shifts/lock-up
June, 6, 2007 AT 10:36 AM
My 2002 is having the same problem, I am getting codes 0740-0785-1860 all having to do with converter clutch circut malfunction.
1st my battery is bad repalced it, 2nd bad ground to block check that, then the ignition relay change that but dont buy part store china brand must be ac delco. Then last is ignition switch not making contac to engergize the tcc solenoid properly.
I am going to try change the ignition in mine this week to see if it fixes my problem.
June, 14, 2007 AT 10:27 AM
Changed my ignition switch and it fixed the problem. Yea. When my dash lights would not light up it caused the tranny to code the solenioin valves. The ignition fuse was not hot, so it would not energize the tranny. Try the ignition switch it fixed mine.