2010 Tahoe/Erratic idle (no codes detected)

[1-oh-Hoe]

I just picked up a '10 with a similar issues. I ran a bottle of SeaChem injector cleaner through my last half tank of gas. The wanting to stall at idle cleared up for me. YMMV but it's a pretty cheap gamble even if it doesn't work.

 

[SNES Avalanche]

OP: https://www.tahoeyukonforum.com/thr...ot-find-the-cause-fuel-pump-injectors.132624/

I've spent 3+ years tracking down this issue and have gone through a bunch of parts.

1. What is your Oil Pressure at warm idle? From the factory they all sat at 40 PSI. (Yours is most likely at 20 at warm).

2. Can you test your catalytic convertors?

In the end I simply bought a Diablo tuner and increased my idle RPMs by 150. Seems to have solved the overall issue and I'm not going to dig further.