GM Tip.
Programming with the Tech 2, if you ever see the message, "Programming failed", make sure you do not turn off the key. If you turn the key off, you may lose the module. You must try again of course. In the meantime, you must keep the battery voltage up, so even if you do not have a programming charger, use your shop charger because if the battery dies, you will lose the module.
Even if you have to have a mobile tech come out or you borrow another tool you must keep the battery charge up and leave the key oneven if it means an all night 2 amp charge.
I am sure this tip applies to J2534 programming also.
Last week I tried to flash a 2004 CTS doing a "Tech 2 remote". It failed twice. I then got out my MDI and laptop and it took the flash. Not sure what that was all about, but I saved the module.
Programming with the Tech 2, if you ever see the message, "Programming failed", make sure you do not turn off the key. If you turn the key off, you may lose the module. You must try again of course. In the meantime, you must keep the battery voltage up, so even if you do not have a programming charger, use your shop charger because if the battery dies, you will lose the module.
Even if you have to have a mobile tech come out or you borrow another tool you must keep the battery charge up and leave the key oneven if it means an all night 2 amp charge.
I am sure this tip applies to J2534 programming also.
Last week I tried to flash a 2004 CTS doing a "Tech 2 remote". It failed twice. I then got out my MDI and laptop and it took the flash. Not sure what that was all about, but I saved the module.
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