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Overkill ecm/tcm



The dealer case learn they do will erase your PMC tune (either canned or dyno) and resets the PCM setting back to the factory settings. Making your $100-$500 tune a waste of money. If you know someone at a dealership or some one who has a GM Tech II, then they might be able to bypass some of the settings and keep your tune as is.
 
I haven't heard anyone else say anything like this before...

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Bogers04SS said:
The dealer case learn they do will erase your PMC tune (either canned or dyno) and resets the PCM setting back to the factory settings. Making your $100-$500 tune a waste of money. If you know someone at a dealership or some one who has a GM Tech II, then they might be able to bypass some of the settings and keep your tune as is.
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Exactly what my dealership told me, they won't let my car leave their shop with a non-factory setting ECM - sure it's all about liability and procedure being they represent GM. I'm having trouble finding a local shop that can do it......onto the next one!
 
rideus said:
Exactly what my dealership told me, they won't let my car leave their shop with a non-factory setting ECM - sure it's all about liability and procedure being they represent GM. I'm having trouble finding a local shop that can do it......onto the next one!
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Dang. I'm gonna call mine cause I know a guy there and see what he'll do

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Well this is strange as its the first time I've heard of this problem..

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The Guz said:
Find a shop other than a dealer that can do the case learn for you.
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I'm currently throwing a P0315 - Crankshaft Position System Variation Not Learned. I would imagine a Case Re-learn would take care of this code. Only code that is coming up. Have a shop that will "take a look at it" tomorrow to see what they can do.


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Apparently the Aero force scan gauges can do case learns. I'm looking into it more in depth but it was posted on another thread

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Good choice. Since its pretty pricey gauge wouldn't want u to get it and then not be able to do everything. But everything else it monitors comes in handy.
 


marines542 said:
Apparently the Aero force scan gauges can do case learns. I'm looking into it more in depth but it was posted on another thread

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Yeah they can. That's how my brother did his when swapping a new PCM and harmonic balancer for his top swap.
 
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