'05 CTSV, PCM bricked?

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11-12-2011
04SilveradoMykk

'05 CTSV, PCM bricked?

Hello,

I have in my shop a 2005 Cadillac CTSV that apparently has a bricked/dead PCM after a HPTuners flash. The PCM initially scanned, the cal was modified and flashed to the vehicle. Upon the initial fire up the car started and idled, after one touch of the throttle the engine turned off, the coolant temp gauge climbed to max, the car won't restart and it will not let me connect/flash via the VCM editor (2.23) using either 'Calibration only" or "Write Entire" I think it's either step 3 or step 4 that fails.

Anyone have any advice, run into this issue or know how to fix this?
11-12-2011
edcmat-l1

Quote:

Originally Posted by 04SilveradoMykk

Hello,

I have in my shop a 2005 Cadillac CTSV that apparently has a bricked/dead PCM after a HPTuners flash. The PCM initially scanned, the cal was modified and flashed to the vehicle. Upon the initial fire up the car started and idled, after one touch of the throttle the engine turned off, the coolant temp gauge climbed to max, the car won't restart and it will not let me connect/flash via the VCM editor (2.23) using either 'Calibration only" or "Write Entire" I think it's either step 3 or step 4 that fails.

Anyone have any advice, run into this issue or know how to fix this?

You try disconnecting the battery for 20 min? Disconnect the battery, disconnect the tool from the car, and the laptop. Wait 20 minutes and hook everything back up.
11-12-2011
waynehartwig

Quote:

Originally Posted by edcmat-l1

You try disconnecting the battery for 20 min? Disconnect the battery, disconnect the tool from the car, and the laptop. Wait 20 minutes and hook everything back up.

x2
Been there done that. Scared the heck out of me. Customer standing there watching. Lucky I was able to play it off and make it seem like it was all a part of the plan.
11-12-2011
04SilveradoMykk

I'll try the battery disconnect today.
11-15-2011
Bill@HPTuners

It sounds, to me, like you altered some of the ETC tables out of the range of the TAC module and ultimately fried the pcm. Thats just an educated guess though...
11-18-2011
AJxtcman

Whats your shops #?
11-18-2011
ccrp

had the same with a 05 Hummer PCM, still don't know what happened.

any conclusions before teh new pcm gets bricked too?
11-18-2011
n0dih

Something up with the ETC params. I can fix the PCM at least, but need to have the PCM in hand to fix it.

Go back to stock on the ETC stuff. Compare what you have vs what is stock.

Quote:

Originally Posted by ccrp

had the same with a 05 Hummer PCM, still don't know what happened.

any conclusions before teh new pcm gets bricked too?
11-19-2011
ccrp

did not change anything on ETC parameters !

all stock parameters in there, never touched
11-19-2011
n0dih

Did you try recovery mode? Or does HPT support it (sorry I don't have my other computer to look at right now)?

You might be able recover. But if the bootloader is gone, then not much you can do be send it off to someone like me who can fix it and if possible, recover the data that is on it. Sometimes I can, sometimes I can't, all depends on what point in the flashing process it happened.

Quote:

Originally Posted by ccrp

did not change anything on ETC parameters !

all stock parameters in there, never touched
11-25-2011
custom1911

THE GUY THAT STARTED THIS THREAD 04SilveradoMykk HAD A CRAIGSLIST AD SAYING HE KNOWS HOW TO TUNE AND HE COULD TUNE ANY CAR FOR CHEAP. HE TUNED MY GTO AND NOW IT RUNS WORSE THEN BEFORE. HE THEN TUNED MY FRIENDS CTS-V THE SAME DAY AND WANTS HE WAS DONE THE CAR WOULDNT START. HE SAID IT WAS THE COMPUTER IN THE CAR. HE TOLD MY FRIEND THAT HE WOULD FIX THE COMPUTER SO HE TOOK IT OUT OF MY FRIENDS CAR AND NOW WE CANT GET A HOLD OF HIM. ITS BEEN A COUPLE WEEKS AND WILL STILL CANT GET A HOLD OF HIM. MY FRIEND HAD TO SPEND $1100 FOR A NEW COMPUTER FOR HIS 05 CTS-V AND HE ALSO HAS MY MONEY FOR THE CRAPPY TUNE HE DID ON MY CAR! THIS GUYS NAME IS MYKK HANNAN AND IF YOU LIVE AROUND LOS ANGELES,CA BEWARE OF THIS THEIF! HE WILL MESS YOUR CAR UP AND TAKE YOUR MONEY AND WHATEVER ELSE HE CAN GET HIS HANDS ON. ALSO, HIS WEBSITE IS CUSTOMPCMTUNING.COM AND HIS NUMBER IS 415-328-2059. I HOPE HES NOT ABLE TO DO THIS TO ANYONE ELSE.