GM programming tip
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for complete Info, Tech2win is not available to aftermarket as yet, coming soon however"I wanna help the helpless, but I could careless about the clueless". Dennis MillerComment
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Battery chargers
That's what they say, but have never had an issue. I may charge the battery for a half hour or so on a 40 amp charge and turn it down to 2 amps while I flash.
I have flashed many Fords without a charger because they flash so quickly with the IDS.
One day I will buy a "Maintainer" because some flashes have been taking longer like a Cadillac CTS I did recently.
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GM programming Tip
I just programmed a 05 Chevy Epica the other day where I performed a remote programming of the TCM, In where at the end of the programming it failed and errored. I left the key on and tryed to then perform just a programming update on the TCM through SPS via passthru. Again at the end of the procedure it failed to program. I left the key on and decided to go into the TCM with the tech2 and check to see if I could communicate with the TCM. Which I was able to get into data parameters but there was no data displayed. I then tryed again to program the TCM(with the key still in the on position.) again it failed.
Next I decided to start the vehicle cycling the key only from on/run to start. I went back into the TCM data parameters and again no data displayed. I then shut the key "off" and removed the tech2 from the ALDL and rebooted the tool and then keyed on the ignition. Opened SPS and choose replace and reprogram .....The flash finished and no longer errored out. (problem corrected)
The point iam trying to make is, if leaving the key on doesnt help the programming session succeed and you have essentially exhausted various procedures,In some cases keying off the ignition and trying other methods may correct a programming problem. Which is contrary to always "leaving the key in the on position".Kevin Suttorp[/SIZE]Comment
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I just programmed a 05 Chevy Epica the other day where I performed a remote programming of the TCM, In where at the end of the programming it failed and errored. I left the key on and tryed to then perform just a programming update on the TCM through SPS via passthru. Again at the end of the procedure it failed to program. I left the key on and decided to go into the TCM with the tech2 and check to see if I could communicate with the TCM. Which I was able to get into data parameters but there was no data displayed. I then tryed again to program the TCM(with the key still in the on position.) again it failed.
Next I decided to start the vehicle cycling the key only from on/run to start. I went back into the TCM data parameters and again no data displayed. I then shut the key "off" and removed the tech2 from the ALDL and rebooted the tool and then keyed on the ignition. Opened SPS and choose replace and reprogram .....The flash finished and no longer errored out. (problem corrected)
The point iam trying to make is, if leaving the key on doesnt help the programming session succeed and you have essentially exhausted various procedures,In some cases keying off the ignition and trying other methods may correct a programming problem. Which is contrary to always "leaving the key in the on position".Comment
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I just programmed a 05 Chevy Epica the other day where I performed a remote programming of the TCM, In where at the end of the programming it failed and errored. I left the key on and tryed to then perform just a programming update on the TCM through SPS via passthru. Again at the end of the procedure it failed to program. I left the key on and decided to go into the TCM with the tech2 and check to see if I could communicate with the TCM. Which I was able to get into data parameters but there was no data displayed. I then tryed again to program the TCM(with the key still in the on position.) again it failed.
Next I decided to start the vehicle cycling the key only from on/run to start. I went back into the TCM data parameters and again no data displayed. I then shut the key "off" and removed the tech2 from the ALDL and rebooted the tool and then keyed on the ignition. Opened SPS and choose replace and reprogram .....The flash finished and no longer errored out. (problem corrected)
The point iam trying to make is, if leaving the key on doesnt help the programming session succeed and you have essentially exhausted various procedures,In some cases keying off the ignition and trying other methods may correct a programming problem. Which is contrary to always "leaving the key in the on position"."I wanna help the helpless, but I could careless about the clueless". Dennis MillerComment
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Why would you attempt a "Tech2Remote" on a 04 CTS? Choosing the Tech2 J-2534 option would have likely given you the same results as the MDI, although the MDI may have been a bit quicker.Comment
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Tech 2 remote Vs MDI
Thanks for the MDI tip.Comment
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Clarification
Very helpful indeed. I'm the same way, if after a while of trying the same thing over and over just doesn't do anything and keeps giving me errors, might as well jump and try anything. I know it's contrary to what the experts here say, but sometimes it might work, specially if you have a customer breathing down your neck. I say try all options and see what you get. I guess this would be a last resort if you just can't get the damn module to flash/update. Thanks for the tip, it's nice to hear from someone who did what is not recommended and came out fine at the end. More tips for all. Regards, Chavez.
All I am saying is, if the reflash fails, you have a much better chance of saving the module by not turning the key off first and keeping the battery up until a solution is found. Thats all.
All you need to do is ruin one module (and pay for it)(1996 Roadmaster) to learn to be as careful as possible.
Thanks, Bob
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