2018 Silverado 1500 5.3 Gas P2101 code, Stuck in Limp mode

[oldsy67]

Hello,

I'm looking for assistance troubleshooting a P2101.  When it first happened, I didn't have a scanner but the truck went into limp mode.

I unhooked battery and it started driving normally for a few miles, then it happened repeatedly. After many battery resets I finally got it home.

 

Scanner showed code P2101. I checked connections at the throttle body and the gas Pedal.

I replaced the throttle body with a new one, no change.

 

I have a new gas pedal arriving tomorrow and I have checked and cleaned all Ground connections I could find.

Another thing to note is that will limping home and hooking and unhooking the battery, the positive battery post and fuse plate felt warm/ hot almost.

 

Question, Is there a procedure to get the truck out of Limp mode?  Unhooking the battery no longer helps.

What else should I look at before going to the dealer?

 

I found bulletin number  18-NA-037  that may be related to my issue. DDOP Software anomaly that will set the P2101 code

Thanks

Dave

 

[silveradosid]

i think you need to do a throttle relearn in order to get it to work

[oldsy67]

I ended up taking it to the dealer. I was thinking it was an ecm issue.

  $550.00 to diagnose, replace the electrical connector at the throttle body and  relearn/ program etc...

 

Without re-installing the old throttle body, I wont know if it was the wiring all along.  But I'm not going to mess with it.

 

Thanks for the response.

[humantorchneedsabankloan]

i had this happen on my 09 6.2L.  I needed a new throttle position sensor.  I don't know if that helps or not.