View Full Version : how do I go back to gm os 12212156?
Dark Halo
July 27th, 2011, 11:54 AM
I have an 02 silverado with a moded lq9 qnd 4l80e that will not idle after putting in cos3. It would idle fine with the 12212156 os and I was just wondering how to go back? I only added cos3 cause I planed on putting a 150 shot on the truck but it will be a while. Im still very new to efilive so bear with me.
GMPX
July 27th, 2011, 12:19 PM
Just do a full reflash of the original 12212156 tune.
Dark Halo
July 27th, 2011, 12:56 PM
thanks wirked this time, for what everreason it was not giving me the option to do a full reflash at first
L31Sleeper
July 27th, 2011, 04:49 PM
thanks wirked this time, for what everreason it was not giving me the option to do a full reflash at first
Connect your V2 to your PC, THEN open the tuning software.
Funny I just did one today.
-Justin
Dark Halo
July 27th, 2011, 11:56 PM
Yea I already got it to work thanks for the help
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