2020 3.0l Duramax with P200A

[davidr83]

What's up, Long time lurker. Had my truck for 3 weeks, 1100 miles. Popped the P200a a week ago, cleared it via hptuners, then came back yesterday. Had OnStar scan it and same code but they couldnt see what the code ment. A quick Google search is bringing up a general code for intake manifold runner. Going to get it in to the dealer asap. Anyone else have this code pop?

Edited March 13, 2020 by dram1983361

[davidr83]

So I took it in this morning to the dealer, they said the computer needed to be re-flashed with the latest calibration and should solve the P200A and the fans running full blast from time to time when it's not hot outside.

 

I'm assuming if you get any of the code listed in the print out, you need the updated cal.

[AT4CHRIS]

Had this happen today, the fans once in a while would turn on full blast on start up but today it threw the code then it went away, will be taking it in as well. Thanks for the post.

Edited January 24, 2021 by AT4CHRIS

[AT4CHRIS]

I took mine in and they said they don’t know why it’s doing what it’s doing even GMC had an advisor chime in, they told me there was no software update, since then it’s done it again but the light turns off before I get it to the dealership, I’ve also noticed the transmission shifts harsh sometimes after driving for a while, most noticeably when I shift to reverse, and my radio touchscreen doesn’t acknowledge when I press a selection on the screen once in a while. My truck just broke 5000 miles and I’m hoping this isn’t going to be a problem truck, my 2003 avalanche I owned for 17 years never gave issues or left me stranded that’s why I stuck with GM.