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You and cringer are awesome. About halfway through and this answers so many questions I had. I guess I am getting ahead of myself by not completing the maf and vve first.

Thanks Alvin, just want to make sure I'm on the right track.

What does a log of others AFR look like at Idle? Just seeing if I am going down a rabbit hole for no reason.

I have used the vm scanner special function and forced closed loop off and seem to get similar results... I have been working through the evans performance course, and it seems like I am way off. ...

Shouldn't the narrow bands control the requested afr? I was thinking the wideband should be fairly close to what the narrow bands are trying to achieve?

I have a 2013 5.3l LMG 6l80e with a GPI LLT1 VVT (212/226 LSA 113)Cam, LS7 Lifter, VVT limiter, 243 heads, LT headers with dual 3" X exhaust. I have the Idle an steady now and only stall when coming...

Just an update. I flashed the tcm from the 2014 24270599 to the 2013 24265260 and everything is shifting. Thanks again blindsquirrel your the man.

Might have to take it to gm I guess.
Thanks for the insite blindsquirell.

I do Have P/R/N/D but weather I am in Drive D6 or M it wont shift out of first. So I was thinking it was an issue in between the ECM and TCM. What other interlocks would stop the TCM from possibly...

@blindsquirrel I did some more digging. Is it just a simple segment swap to do this?

My apologies. I was digging through old strings to see if there was anything that I could go after.

My build is a 1992 C1500, 2013 5.3L with a 2014 2wd 6l80e. Addons include -GPI VVT LLT1 Cam,...

@blindsquirrel. Is it possible to use hp tuners to change the os of the tcm? I have a 2013 e38 ecm with a 2014 6l80e tcm, currently I have no errors and can read gear position, trans fluid temp,...

Did this ever get resolved? Was it an issue between the different year ecm and tcm?

Perhaps I am going about this the wrong way. Should I start by getting my AFR wideband to narrow down the AFR first or should I tune the MAF first? I am working off the stock tune file and have...

I will give it a try GHuggins. Thanks!

5FDP I backed out all the changes to the idle adaptive's and changed the over under to +/-8. Backed down the running airflow a bit too. It was a little hard to start so I may add it back in to the...

Hi there,
I have just completed an LS swap on a 1992 c1500. Newly refreshed 2013 5.3L LMG with a GPI LLT1 Low lift VVT cam, Long tube headers, Dual 3" exhaust, CAI. I am going through the tuning...