need help ASAP, car will not stay on [Archive] - GrandAmGT.com Forum

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stewartfn18
05-18-2010, 06:22 PM
so i just did a write on my pcm to make some changes. after the write, i waited the 20 sec like it says, and tried to start it. it starts, so the pcm is not bricked, however immidiately after it starts it dies. i have no clue whats going on.

Malaclypse
05-18-2010, 06:37 PM
Maybe you have to perform a passlock relearn.

The security code in the PCM may have been overwritten during your flash.

westerndragon
05-18-2010, 06:46 PM
i hope you copied the original bin so you can revert if you have to....

stewartfn18
05-18-2010, 07:08 PM
ok so what happened for whatever reason, the pcm decided to set the engine oil pressure code AND a vehicle theft detterent code. i cleared them and the car started. no oil pressure issues exist.

AaronGTR
05-19-2010, 04:17 PM
Yeah, quite often after writing there will be some DTC's in the PCM... I usually get at least the theft detterent one every time. Sometimes I get some other ones on other peoples cars. On my GP I always get a bunch of MAP and MAF sensor codes too. I think there is an option where you can disable that code, but I also think then your theft detterent system doesn't work... not really sure as I haven't tried it. I just have made a habit of every time I do a write, next time I power the car on before I crank the engine I clear all the DTC's. :thumbs: