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View Full Version : Stock 12631085 anyone?


SwedeBurb
June 13th, 2011, 10:53 PM
I'm looking for a stock 12631085 file... anyone have a copy to share?

/Stefan
GMPX
June 14th, 2011, 12:51 AM
To suit what vehicle / engine Stefan?
SwedeBurb
June 14th, 2011, 01:27 AM
2005 Chevy Colorado Z71 3.5L, 4L60E, 3:73 (1GCDT196358139621)
Taz
June 14th, 2011, 01:39 AM
Hello Stefan,

OS 12631085 is an update (garage shudder, etc.) to the OEM original OS 12597778 - from a 2005 Colorado L52 3.5 L 4L60. I have the original OS on file - from a 2005 Colorado with 3.42 gears.

Not sure if that is of any use to you ...


Regards,
Taz
SwedeBurb
June 14th, 2011, 06:06 AM
Beggars can't be choosers so I'll take whatever OS I can get :) ...I need to program a blank PCM.

/Stefan
Taz
June 14th, 2011, 01:22 PM
Hello Stefan,

Attached below is an original (never modified) tune from a 2005 Colorado with the 3.5 L I5 4L60E 4 x 4 - it still has the original OEM OS 12597778. Hopefully this will work for your application.


Regards,
Taz
SwedeBurb
June 14th, 2011, 06:23 PM
Thank you very much!

/Stefan
Sleepy280
September 15th, 2022, 04:04 PM
Hello Stefan,

OS 12631085 is an update (garage shudder, etc.) to the OEM original OS 12597778 - from a 2005 Colorado L52 3.5 L 4L60. I have the original OS on file - from a 2005 Colorado with 3.42 gears.

Not sure if that is of any use to you ...


Regards,
Taz

I know it has been a long time, but do you still have that file? I have a bin with a corrupted OS.
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