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On 2017 GMC Sierra I did everything to force closed loop and it enables when I decelerate. Yes DFCO is off (set ECT to 350). It is skewing my results for fuel trims. Any ideas?

Just placed an order for a wideband today. I will be pulling y pipe and welding a bung in this week. Untill then I would like to get this thing drivable with a partial throttle MAF tune. No more...

Posted tune in this thread. https://forum.hptuners.com/showthread.php?91077-2017-GMC-Sierra-6-2l-Cam-Tune

I am making sure i don't go below 700 for now. Defiantly interested in some more chop but for now tryin to get a decent MAF tune. I am vey lean at idle and all over.

This is in forced closed...

Just making notes on some differences

-idle speed reserve table is pretty close to stock on your truck. I've heard two different places that lowering it by 20% when you install a bigger cam is the...

Same cam same boat

https://forum.hptuners.com/showthread.php?91077-2017-GMC-Sierra-6-2l-Cam-Tune

Had a cam install done and the shop gave me my truck back stalling and refusing to start at times. I got it to stay running and not stalling by editing the idle tables. I am including the original...

I had my engine fail at 108k from a stuck lifter on #7. The infamous DOD system failed. So, I decided to bring it to a speed shop and get the Texas Speed DOD delete kit and camshaft (TSP 5.3L...

Problem fixed it was a misfire problem. This morning the CEL went off by itself after it ran for 5 minutes. Last night it ran for 45minutes like crap even after the tune up. I guess it was still in...

I will do that today and report back i did a tune up but that did fix the problem.

Yes I have the same set up as you only rears o2's connected. I have a feeling it is another issue nothing with the tune Vehicle has been running perfect for 80k. Yes I reset the codes and they came...

I have not had codes for 80k miles and the Truck has ran great. ARH headers have no spot for the front O2's. here is the tune file
...

I have a 2017 6.2l 1500 Sierra with 1 7/8 ARH headers with ARH 200 cell high flow cats. I have a CEL throwing codes P0420, P0430, P050D. Upstream o2 sensors are disconnected shop did the tune and I...

I accidentally did an overwrite to my stock file if someone could please post up stock file for a 2017 Sierra 1500 6.2L 8 speed that would be awesome. It's a denali trim but I'm pretty sure that...

here's a tune for a 2017 8 speed. Just found it browsing here on the forums.

https://www.hptuners.com/forum/showthread.php?64876-2017-Silverado-throttle-limited-rpm-at-6000