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 inhibited” and won’t do anything what should I do?
08 lmm shift inhibited
- Thread starter Ben dixon
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- transmision
First one’s a pressure code, did you by chance replace the pressure switch and harness while you were doing filters and solenoids? It’s commonly set by fluid leaking past the little orange film membranes. It’s a relatively cheap part so I’d just replace it.
Next two are emissions codes
Last one’s an iat code.