TJay74

No one ever said anyone is an idiot, but when people come into posts without fully knowing how the system works and or tells people there are no gains it makes people question who is correct. 1st off, the 5.3 trucks shouldnt even be running 87 AT ALL...!!! Those trucks have detonation on 87, 89 and on 91. The compression ratio isnt that far off from the 6.2 trucks. Sadly people get fixated on the fuel costs and to be honest the vast majority of owners will run the cheapest stuff they can find. The only way E85 will have a octane rating around 94 is if it is not really E85 and is closer to E65 which does happen as some stations switch over to the winter blend on E85 in the fall. Our main station is Oncue, they do this. We do have a private owned station who keeps pure E85 all year long as well as E100. So luckily we can use either one to get the E value up faster without having to run so many tanks thru the vehicle. As said, Ethanol has benefits other than just being able to run more timing. It burns cooler, it burns cleaner and it wont leave carbon fouling on the valves, pistons, rings, or any of the other parts. I recently had some work done on my truck, with the Ethanol I had put in the system over the last several months and the catch can as well the tech said I didnt have any carbon build up on my valves or on the pistons when he used the bore scope to check out a couple of cylinders. I am looking forward to the gains on the E85 in the next week or so, I may at some point put my wideband in the exhaust as well and maybe see if I can dial in the PE tables as well. One day my goal is to go out to Florida and go to the Tuning School and learn some more of the tuning side of the new vehicles.

OK, E85 kit is installed on the truck along with a ported Katech throttle body. Just for those who are interested in factual info, here is some. I had about 4 gallons of E85 in the truck as part of my normal fuel routine this last week. On 91 octane the 4 gallons of E85 added some much needed octane and detonation prevention. With HP Tuners and verified with the Torque app using a custom PID the truck was reporting a E85 percentage of 9.8%. The newer vehicles have a virtual ethanol sensor in place so they can read ethanol in the system. The tables for E85 are fully populated, the only change I had to make was to turn the sensor from "virtual" to "sensor". I had to also change the Min and Max E85 percentage, from the factory it is set at 10% for both of those tables. Now where the tables get interesting is there are modified tables for E10, E20, E40, E60 and E80. At each one of those set points the modifier gets more aggressive until at the E80 point it is at the max modified of "1". Once I got the sensor installed, which took about 30 minutes using the CJ Tunes kit I went in and modified the tune and activated the sensor. Then took the truck for a test drive and logged the truck using the HPT scanner program. Truck reported 14% E85 in the system and performance increase was already showing in how the truck drove and in logged knock which had reduced to almost nothing. Sadly I just filled up this morning, so I am going to have to drive the truck for a week to get the 91 octane out of the tank, but hopefully by next weekend I will be able to get around E60 or higher and start really seeing the advantages of switching over to E85. Any questions feels free to reply on here, contrary to what some of the other posters said about the 6.2L trucks not seeing any benefit is false. The trucks pick up power and response along with adding detonation prevention just like the cars do with the switch over to E85.

Dude you are so far off from the truth and reality. The GM trucks with the 6.2L engine in them already have the flex fuel tables in the PCM, those tables are fully filled out and ready to go from GM. There are separate timing tables for gas and for E-85 in the ECM along with the sliding scale that accounts for the Ethanol percentage so to be able to adjust the timing map and fueling map. Maybe do some research before telling people how the system works. My 2017 Camaro SS comes with the same exact engine as my 2016 GMC Sierra 6.2. My Camaro didnt come flex fuel setup either, it was tuned on gas when I put the headers on and put down 431rwhp during a summer evening, that same night when the tank was half empty we put 12 gallons of E85 in the tank that once mixed ended up with a reporting value of E65. Car then put down 450rwhp with nothing more than the fuel change and activating the E85 tables that were already in the ECM. Cleaned up the PE Enrichment tables and picked up another 4hp to end up at 454rwhp with nothing more than running E65. The shop said getting from E65 to E85 would give the car maybe another 3-5 rwhp, which was confirmed once I got the car up to E85. At E80 the ECM passes the last timing modifier which will give you the max amount of timing under the E85 tables. The trucks work the exact same way. Plus E85 with the 105 octane rating doesnt show any signs or instances of detonation at all no matter how hot it is outside. My Camaro SS now has a Procharger D1SC on it along with a Alky dual port meth injection system, I still run around E20 and the car puts down 650rwhp on a conservative tune with no signs of detonation at all. I was hesitant of E85 at first as well, once I found there were several stations around me with it I swapped over. All I can say is I wish I had done it sooner, nothing but positive benefits from running it. No more detonation, no more dirty exhaust tips or carbon, engine runs cleaner with no carbon build up on the pistons or valves, and oil is a little cleaner as well. On the trucks with pure 91 you can actually add about 4 gallons of E85 which will put you around E15 on 91 octane and it will dang near get rid of any instances of knock that the 6.2 and 5.3 trucks are prone to seeing when it is hot outside. Heck in Texas you can get 93 with E10 in it at the pump, all of the forced induction cars down there love running the stuff.

OHH.... YES...YES...YES the 6.2 are actually flex fuel compatible. They are the exact same engine as the engine in the Corvette and Camaro other than the intake manifold, exhaust manifold and the tune in the ECM. My Camaro didnt come flex fuel compatible, and yet I converted it over and ran it just fine on it.

Why does he not need it, I have a 6.2. The extra 30hp is a nice change. E85 is 105 octane, the 85 part is that it is 85% ethanol and 15% gasoline. Winter blend affects E85 as well, I have seen it go down to E60 during the winter months. The testing kits are ok, but they are not accurate at all. I get my data from the flex fuel sensor itself. We have a local gas station that carries the higher grade fuels and they make sure to carry full E85 year round at the same price the other places are charging.

Thanks peeps, got ahold of Carl and ordered his kit and he is going to adjust my tune for the E85 since I have HP Tuners already for my truck. The E85 along with the new Katech ported throttle body I ordered should give me a nice 30-40 hp bump at the wheels. Now if I can get the wife to pay attention and only put E85 in the truck when she gets gas.

No, you cant use the Corvette/Camaro LT1 kit on the trucks. The cars have the flex fuel sensor on the intake and the trucks is under it.

Who all has put on a E85 kit on their 2014-18 6.2l crew cab truck? I am not here to discuss the merits, the cost, the pro's/con's of E85. I had it on my 2017 Camaro SS before I put a Procharger on it. I am looking for who has done it, what kit did you use and or who did you order it from? I searched for some threads on here but there are not that many it seems. I already have HP Tuners and the truck is already unlocked, the E85 tables are already in it. Just need the kit so I can turn on the sensor in the tune and reap the rewards from it. Thanks in advance... Todd

All 6.2 trucks from 2015 on got the A8, in 2016 all 6.2 trucks and any 5.3 truck with the LTZ/SLT package got the A8.

Yes, the 6L80E is inside of the transmission. If it is under warranty and it should be since the 2014 trucks are 5yr/100k mile powertrain warranty then I would take it to the dealer for help.

Yes, Chris could possibly do it but.... If you every took the truck in for service or warranty work that requires the BCM to be updated it would over-write the custom flash from Chris. Then you would have to send the BCM out to them again to be flashed again. While the BCM is out the truck is not driveable.

Because it requires GMTIS to override and put a custom BCM firmware in the system to turn those features on, and GM just doesnt allow that to be done now. The modules are all VIN tied now, so the system knows exactly what features were shipped with that VIN and it wont allow them to flash in features that were not there as the vehicle came off of the assembly line.

i will second what PGAMBOA just said, in short NO you cant do this swap. If the truck didnt come with it from the factory then you cant add it after the fact. No matter what you do with hard parts and putting the pieces into place, you wont be able to get around the BCM programming that you will need in order to get everything to talk to each other correctly. We ran into this on the Camaro6 forum with the 1LE Camaro's. We have the exact same Recaro seats that the ZL1 uses, all of the heating elements and cooling parts are in the seat. A member has been at it for 6 months now substituting parts from a Camaro 2SS that has heated/cooled seats and he still cant get it to work and that is even with custom circuit boards and such. The stock cooling feature uses PWM to control the motors, so short of replacing the hard parts with ones that use a on/off signal and motors it isnt a viable upgrade. Sad too as I really would have loved to do some slight mods and have heated/cooled seats in my Camaro SS 1LE.

Go to another dealer, if your truck is losing coolant as per the TSB then it should be covered under the special warranty coverage that GM extended.

Is this a 2014 OP? If so the drivetrain is covered 5yr/100k miles and the engine falls under the drivetrain coverage. That injector should be covered since it is part of the engine, I would call GM and open a case with them on this.

if there is 3 wires to it then it is 12v constant, 12v switched, and ground. I have setup several HL GDO on vehicles that didn't come with them. There is nothing to setting them up.

OEM hands down.

Homelinks only need power and ground to work, they are not on the CANBUS system. Make sure to hold the outside two buttons down for 10+ seconds to clear any stored memory positions. The light will flash fast once this is done. Then while holding the GDO opener below the Homelink module push the button on the HL you want to use and the GDO opener button at the same time. Hold them both down until the HL light flashes fast. That part of the process only programs the GDO opener rolling code to the HL module, now you need to tell the GDO opener head unit that the HL module is a allowed remote. Press the learn button on the back of the GDO head unit and then press and hold the button you used in the above process on the HL module. If the process is done correctly the GDO head unit should flash the garage light to let you know the opener is programmed.

I've had the AFM turned off on my 2014 for the 30k miles I had it from new with 0 issues and on my 2016 truck with 10k miles with 0 issues. Doesn't hurt a thing at all and didn't impact my gas mileage one bit.

Actually the DI engines use two pumps due to how high the fuel pressure requirements are, that is why the 2017+ trucks are now priming the pump when the drivers door opens. It lessens the engine start time requirements.

You are going to have all sorts of warning lights and possibly put the truck into reduced power mode if you remove the Magnaride. Either find a known lift that works otherwise you need to go to a truck with out the Magnaride system.

Katzkin would be the way to go for sure. You could possibly run into SRS (airbag) issues as well with this swap.

No, even though the wiring harness is there you will be missing the module under the seats, the elements in the seats and you will not be able to get around the part where the BCM would have to be flashed for the heated/cooled seats to work. Dealer CANT do that as GM does not allow it on the 2014+ K2xx trucks. If the truck did not come with the option/feature from the factory then you wont be able to add it after the fact with OEM parts. Your only option will be to go aftermarket with the heated seats.

I can tell you guys, there is no way to get the dealer to update the BCM. It wont happen at all now or in the near future. The dealer can only program your BCM with the calibration that is on file on the system for the VIN of your truck. The backdoor of using a VIN from another vehicle was closed out by GM after the 2013 models. Only way for BCM programming as of now is thru Chris White. I would ask if it is a feature he can handle, if he can make sure you never allow the dealer to update your BCM because if they do it will over-write any changes that Chris makes to the BCM.

Recently the GM leather seats have been all leather on the front side of the front seats and then the bonded leather on the sides and rear. The rear seats are fully bonded leather, doesn't matter if it is a SLT or a Denali/High Country. Makes me really appreciate the full Nappa leather package in our Audi.