Misfire problem, HELP!!!

[thejacobstahl]

So I go to start my truck and it runs fine for about a minute and then starts rough idling and sounding like it’s misfiring. I have no clue what the problem is. Doesn’t throw a code and I have scanned it. 2016 GMC Sierra 1500 5.3L V8 140k miles

[GMCustomerService]

2 hours ago, thejacobstahl said:

So I go to start my truck and it runs fine for about a minute and then starts rough idling and sounding like it’s misfiring. I have no clue what the problem is. Doesn’t throw a code and I have scanned it. 2016 GMC Sierra 1500 5.3L V8 140k miles

We are here to help, Jacob. So we can learn more and connect you to a dealership who can assist, please email us at [email protected]. In your message, please be sure to include your VIN. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

[ftwhite]

I had similar symptoms when I forgot to plug throttle body back in. Has you been working on the truck before it started, or it just drove fine last time and broke this time?