transmision

  1. B

    08 lmm shift inhibited

    I have a 08 Silverado 2500hd I have been getting “reduced engine power” fixed that and the truck still wouldn’t shift I’ve replaced internal and external filters I’ve changed the shift solenoids and still won’t shift it was stuck in 4th gear kept popping out of reverse and now it says “shift...
  2. A

    2002 Duramax trans problems. Hopefully electrical

    I just bought a 2002. I knew it had some electrical issues. The gear indicator on the cluster comes and goes. Mostly gone and the trans shifts hard and has a delay on start. I thought it was torque converter drainback at first but pulled codes and seems to be electrical maybe. It has a leak...
  3. M

    Transmission problems -- P0722

    2015 duramax 2500HD high country. Code p0722 output sensor we replaced sensor and truck isn’t shifting out of first. And Speedo wasn’t working. Got speedo working but no shifting out of first No broken wires to tcm getting 9 volts at sensor and 9 volts at tcm. Cannot find any wiring schematics...
  4. 0

    LB7: Problem Shifting at 3000RPM

    Hi, I'm new to Diesels. I have a 2003 Silverado 2500HD DuraMax. Everything in it is stock. It has 153K miles. I recently had 4 of the fuel injectors replaced. The others tested out good. The air filter is almost new (about 3K miles - Fram ToughGuard). Earlier today I was parked up a...
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