View Full Version : 2016 Silverado LTZ Turbo codes
YAKPERFORMANCE
March 31st, 2026, 04:53 AM
Good morning I'm working on a 2016 LML Duramax he is heavily modified with a exergy CP3, exhaust, WC pipes, S372 turbo charger non VGT, built motor, built transmission, ETC. I have gotten the base tune situated and got the fueling about normal vs the previous tuner who had that thing smoking non stop at idle & under light load just dumping. My only issue now is I have e a couple codes for the non VGT turbo P0045, P00EB, P0546, & P2564 no messages but do have a engine light after some idle drive time. My question is do these codes need to be fully disabled or if you get the air model inline on the turbo will those 2 turbo codes not set? The exhaust temp sensor I can always just plug in / air temp sensor if I have to but would rather not. I usually don't work on anything 11+ cause I don't like the you can do this you cant do that so I keep it 01-10 95% of the time. Now his truck was tuned by a big company and like I always joke I'm no one but I take my time on my files, log, & they are usually spot on. If any of you other calibrators have any info or advice I'd appreciate it.
Also he mentioned with the previous tune he would get cylinder contribution codes and P0106 / P0275
I will attach a idle log below I will play with a few things today see if I can fix those few DTCs.
YAKPERFORMANCE
March 31st, 2026, 03:02 PM
I got all the codes sorted but the control P2564 I will try something tonight to see if I can fool it other than that truck is now actually fueling correctly and not dumping tons of black smoke at idle or under light load. Need to get the passenger exhaust manifold adapter for the EGT 1 sensor. The truck has a LSP5 switch is there a way to enable the Fuel temp 2 in the 15 LML or is this something that has to be done in the actual hex file. One thing that is kind of funny is you can be great at what you do but these tuning companies want you to pay for half the service available on these trucks and their files. I kind of understand but think its really funny. Its like they only want the big wigs being able to work on these trucks but even they cant get it right especially remotely with highly modified trucks no one truck is the same from what I have seen. As any good calibrator know having the truck in their hands for tuning is night and day and saves a ton of time vs going at it remotely on these trucks with a lot of work done. I will post my file if anyone can help me with that turbo code I really dont care who uses it still needs some fine tuning but the 100 over injectors are dialed in at idle low throttle haven't done WOT tuning yet on the truck.
Omega_5
April 2nd, 2026, 12:45 PM
Were you posting on the 'other forum' about removing the DTCs?
Send me PM, and I'll walk you through a few things to get you started.
YAKPERFORMANCE
April 2nd, 2026, 06:28 PM
Yes I was trying to get the turbo codes taken off had a few for now I built a jumper harness with a solenoid so the voltage wouldn't be 0 (open). I think I tuned around the VGT Turbo but it would be great if I could get some assistance I know time is money so I will definitely take care of whoever comes through.
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