I have a 2013 4.8L and 6L90 swapped into a different vehicle, and when I start it after it has sat for at least 12 hours, it always feels like I have a 15,000 pound trailer behind me. The exhaust is...
Type: Posts; User: 87skier
I have a 2013 4.8L and 6L90 swapped into a different vehicle, and when I start it after it has sat for at least 12 hours, it always feels like I have a 15,000 pound trailer behind me. The exhaust is...
Are there any DTC's?
Do you have any issues other than TUTD not working (bad shift flares, slow shifts, harsh shifts, slipping)?
Can you post a log with "PRNDL status", "Trans shift mode", "Trans...
Let's start from square 1.
What engine and transmission are you using?
What OS for engine/transmission?
What vehicle did it go in?
BCM?
What shifter are you using?
What shift quadrants do you...
There are a few different MAF with the same connector. You may need to repin your harness. If you post the MAF p/n someone around here might have the pin out for it.
I have mine 0'd out for the most part. You will need to do some tinkering to get the right torque/rpm so that it is still smooth during locking, unlocking, and high demand situations. If you don't do...
8.25k is correct.
This test is for if you have the switch wired in and only want to check at the transmission. The other wire on your switch should be connected to 12v, switched power.
In this...
Well, you will get 12 V at the pin with the ignition on. Your switch should be 12 V hot with the key on and since the wire is open you will get 12 V. To check the wire, you will need another resistor...
I looked over your tune file and couldn't find any issues. I did notice that both gbg and DHC OS's vary from mine though. Mine for the T43, GM A6 is 24265260.
I don't like to flash entire OS as...
J1/X1 connector pin #1 should be OG/BK circuit 1786 and indicates it is for "Park/Neutral Signal" on my L20/6L90E combo. When I thinned my harness, I traced it to the transmission. Should be the same...
I think I've heard about the pump issue, I believe there was a YouTube video that showed the replacement pump he got was missing 1 or 2 inches of a channel.
I got the engine and transmission from...
Post your tune
Beautiful car, color is nice and engine bay looks good. Your log file isn't reporting a speed at all, so it isn't surprising your dash isn't working. I would start by fixing this, as it sounds like...
Open VCM scanner, click Vehicle and choose Diagnostics & Info. Choose read DTC's.
Transmission could be going into limp mode. It typically chooses a gear between 1-3 or 4-6 depending on when it...
x2 on this.
If I were you, I would adjust your tow/haul mode (usually Pattern B), so that the minimum upshift speed is slightly higher.
See: Trans > Auto Shift Properties > General, to see what...
Did you setup the shift tables? Attached is mine, for 3.07 gears and 33" tires, so adjust accordingly.
Seems like most people have trouble getting their transmission hot enough. I'm thinking it could be a flow issue like Jmandernach mentioned.
It's unlikely but possible. I only have about 8" of rubber line in the entire system. I may replace the manifold on the transmission as I am reusing the factory one.
This is the cooler I have https://www.summitracing.com/parts/der-13720
I've had 3 different cooling configurations. The first one was just a small external cooler that worked fine before the...
I've been trying to reduce my 6L90E transmission temp for a while now. It's in a 72 chevy 4x4 with np205 transfer case and dual exhaust. The transmission on a 70 F day runs at 185 F, the issue really...
Just to be clear, your switch should have two wires. One goes to the transmission, and the other goes to a 12 V source. Is this how you have your switch connected?
I know the feeling, I have most of the stuff to do it, but haven't had the time to work on it.
I keep hearing about companies making CAN modules that run cruise, lights, etc... but have yet to see one working. I don't know how handy you are, but you could buy a CAN module for a development...
First thing that comes to mind, is why is the car there? Random electrical problems?
I would also try reading another vehicle to be sure HPTuners is working properly.
Typically things timing...
What does the PRNDL Status report in normal vs. sport/manual? Does the shift lever on the transmission physically move?
If it doesn't move then you can set it up like the image attached. The...
Not completely sure, but if the OS is similar and has the "hardwire" option in the TCM > Auto Shift Properties > General > TUTD Type, then it should work. I'm just not sure if GM made any significant...