ECU reset

[Al Ormston]

Is there any GM/ goodwrench service techs that read these forums that could possibly tell me how to reset the ECU on my 2018 Sierra because I tried to get the dealer where I bought it to do it but they flat out refuse... Any suggestions would be greatly appreciated. (Only GM TRAINED techs please) 

Thanks, Al

[Bash74]

Then you need to go to another dealer. My dealer charges $150 to put everything back to factory. I had to do it when I got the wife a used 2017 and it had some shitty tune in it.

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[tbarn]

They must be so busy they don't need your money. It's just a matter of reprogramming the pcm. I'm assuming there is a tune in it now.? 1 hour labor should be sufficient. Would have been happy to take your $ at the dealer I worked at.

[Al Ormston]

Don't have any tune... I bought the truck new and been having some minor issues.

Things that a reset would probably remedy.

[Al Ormston]

9 hours ago, tbarn said:

They must be so busy they don't need your money. It's just a matter of reprogramming the pcm. I'm assuming there is a tune in it now.? 1 hour labor should be sufficient. Would have been happy to take your $ at the dealer I worked at.

No tune... Just bugs... Minor issues that I think a reset would remedy

[CamGTP]

I doubt a reset will do anything. Computers don't just lose their memory and go off their rocker for no reason.

 

If you want the computer to be erased of it's recent "learned" memory and or to in a way "reset" the learning functions, trims etc etc you can do this for free.

 

Remove the battery cables from the battery. Leave them off for a bit, then touch both cable ends together and hold them for like 20 seconds. Leave the cables off for 30-60 minutes and hook it all back up. Now the computer will act as did when it was first plugged in.