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1. 

   P0770 transmission trouble code and loss of forward progress

   That's much less expensive than a complete rebuilt kit. Did you look at the solenoids for other trucks? IIRC, Isuzu uses the same solenoids and last time I looked they sold for about $40.

   • Words: 34
   • Malleus
   • Post #6
   • Nov 30, 2022
   • Forum: 80-Series Tech
2. 

   P0770 transmission trouble code and loss of forward progress

   You are correct about low speed torque converter lockup; that doesn't happen. The purpose of the torque converter lockup is to "lock" the engine to the transmission; the torque converter is a clutch to keep relative differential in speeds between the engine and the transmission copacetic. So...

   • Words: 270
   • Malleus
   • Post #2
   • Nov 23, 2022
   • Forum: 80-Series Tech