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Originally Posted by blazee
I'm sorry for the confusion, in the other thread I was just answering your questions about the PCM, and explaining why your transmission was acting like that, I didn't mean that the PCM was the problem.
As GMMerlin said, those codes indicate a loss of power to the tranny and it typically is the ignition switch that causes the loss of power.
With the switch on, check for voltage at fuse #11 (cluster). If no voltage or low voltage is present, then I would suspect the ignition switch (or faulty wiring for a remote starter if you have one)
If you have voltage there, try turning the switch on and off a few times to make sure that it remains constant.
If the voltage is present and stays constant, then inspect the wiring going to the transmission.
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Would these problems exist if the ignition switch got wet?
I ran my truck through a pond and sucked up some water into the engine. Got lucky with no engine damage, but when the tranny started acting up and the engine began idling high (1500), I took it to the local AAMCO shop to see what they could diagnose.
They said six codes came up and that they were all different sensors and it would take hours of diagnostics, ie lots of money.
Not that I'm trying to be cheap, but since the truck didn't stay submerged in water, I'm thinking some things got wet and maybe shorted out and that's causing the problem.
Do you think they would get ticked if I asked them to check the ignition switch? I guess I need to get the codes that came up too.
Thanks for any help you can offer.
Steve