I have a 99 Chevy Silverado w/09379910 OS pcm.Can I full flash a different OS into it so I can use the COS#5? I have an extra 99-02 pcm just in case.I just don't remember if I could do that:unsure:.................Paul
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I have a 99 Chevy Silverado w/09379910 OS pcm.Can I full flash a different OS into it so I can use the COS#5? I have an extra 99-02 pcm just in case.I just don't remember if I could do that:unsure:.................Paul
You need to be running the 02 F Body OS before you can upgade to COS5. Once you have copied all of your tables over you can full flash that OS in, then upgrade to COS5.
Aahhh OK.Thank you:thumb_yello:.................Paul
OK I did a full flash and the truck does not start.I'm getting "U1000 Class 2 data link $1A Transfer Case Shift Control Module" Now what................Paul
What file did you flash into PCM? Was it a truck file or a F-body file?
Find a truck file that has OS 12212156 or 12202088 so you can use the COS's....
OK I'll try that,Thanks................Paul
Thanks man that worked.Started right up:grin: I used an 02 silverado w/12212156 OS.I also put in the BCC code.I did not do that on the last one.I don't know if that had anything to do with it.Any way's it starts.Thanks again:thumb_yello:Quote:
Originally Posted by GAMEOVER
Cool....:cheers:
Be sure to read this.
COS5:
showthread.php?t=2599
showthread.php?t=2270
Well its back again,Same problem.Any idea's?
I had an extra 99-02 pcm.I put that in,Flashed it,The truck starts right up,But I still have that U1000 code and now the battery light came on in the message center and my fuel gauge does not work.:confused: I think I'm going to flash the original OS and leave it alone like I should have done in the 1st place:grin:
OK put in 0411 pcm in flashed 12212156 OS WITHOUT the COS#5 and everything works fine:grin:I took out the 5.3 motor & put in my 5.7 short block that I had left over from the Corvette,That's why I changed PCM's and OS to get away from the backup VE table and other stuff:grin:............Paul
So everything is good?
Yes sir :thumb_yello:Quote:
Originally Posted by GAMEOVER