where could I download this update? how can I tell what or if it had already done? using scan tool

my brother has programmer, but costs $ to get the update

anyplace on the net with the downloads for free?

16231374 - Control Module

9365354 9365346 N/A Change to correct 3-4 transmisssion harsh upshift and enhance post 02 sensor diagnostics, Bulletin Number 876520.

Unless you have a tool like HPTuners, then you are not going to be able to flash anything to the PCM.

A Tech II will also work, but even if you find the update on the net, you are going to need a RS232 cable pass-thru device to get in on the Tech II.
Somebody else may have a suggestion, but I am pretty sure you will have to take it to a dealership.

yeah, brother has everyting to program/flash.. just need the update/download

Ahh ok, I searched and could find no way to get the calibrations free, you may have no choice but have a dealer do it.
But wait and see if any of the others have any info that may help.

You have no other option but to take it to a dealer to have it updated.

Even if you had HPTuners, and the money to get onto GM'* database to get the updated file, HPTuners won't recognize the file.

no, he can download the update..it'* $125... and yes, can read it

I did not want to pay.. basically it just changes shift point from 3-4

not worth $125

What can read it?