Thread: HP Tuners "Write Entire" to wrong ECM, now can't write anything to it.
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Old 11-07-2022, 02:09 PM
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samckitt samckitt is offline
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Default HP Tuners "Write Entire" to wrong ECM, now can't write anything to it.
OK HPT experts, got a dilemma.

I have 2 different E67 ECMs, one is GMPP & the other is 09 CTSV, I can/could write to both of them without issue. But I mistakenly did a "Write Entire" of the GMPP tune to the CTSV ECM (which worked), but now I cannot write anything to the CTSV ECM, says vehicle not recognized, or registered, or something like that.

Am I hosed now & have to use more credits to enable that ECM again? Or is there a way around it?

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Last edited by samckitt; 11-08-2022 at 06:25 AM.
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