Cannot read ecu, keeps failing while reading vcm or will get 2% in 20 minutes and fail. Stock ecu.
Cannot read ecu, keeps failing while reading vcm or will get 2% in 20 minutes and fail. Stock ecu.
Did you buy a used HPTuner kit? Old model wasn't compatible with my V. It did this same thing.Originally Posted by SPANKER
GH
What version of hptuners? I had some issues initially with my wifes 2005 V but have been able to get it to work fine. I am using the beta version of the software though.
I have this issue right now. 2004 ctsv. Bought car used. But I just bought brand new hp tuners this week and have latest software. Any help much appreciated.
Pic of screen
The issue with this CTS-V was you couldn't use high speed. We clicked that little box on the bottom and it worked fine.
Try that.
Also, if it has nav, turn the car to the on position, wait for EVERYTHING to cycle and the nav to finish doing its boot cycle before trying to read. That has worked just fine for me.
Does have nav and I'll uncheck high speed and give it a try. I'll update my results. Thanks guys for the quick replies.
Cut radio off and de selected high speed. Worked like a champ
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