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Sounds like a plan man, thanks.

My 2012 tahoe dies on the 1st start nearly every morning. Started a month ago with no changes at all. Always run premium gas and tried swapping the fuel pump as a 1st shot at throwing parts at it. I...

I just found another dudes post from last year with the exact same issue so yes, it sure sounds like the reluctor is on backwards. Motor coming out today, thanks for the reply man!

Do you think the MSD box would have been able to ignore this? The motor was dynoed with a 750 carb and a msd box to run the coils. I agree it really seems like a reluctor issue but the dyno numbers...

This is the oddest thing I have encountered working on LS engines. The engine is in a road course 67 firebird that was running a stock 04 gto LS1 getting the crap beat out of it for the last 2...

Got it.....Wired the dakota digital ground source to the GM dbw pedal ground purple wire and that got rid of any 0606 codes. I then ran the vss signal off the ecm speedo output instead of the vss...

As far as the ecm goes I have not swapped any os in it. It is still running the original 08 tahoe os. I changed the throttle rate map to the camaro map since I am running the LS3 throttle body which...

It looks like the truck threw two codes when the cruise tried to engage killing the throttle. P0606 ECM/PCM processor and a P2138 throttle pedal position sensor. Any chance the camaro throttle body...

Sounds good, I'll put the truck on stands and run it up to speed then try to set the cruise and see what I get while scanning it. We had a dam blizzard here so its stuck inside for at least a week or...

I have a short box chevy pickup that was swapped with a stock camaro LS3 and a 4L70E 17 pin transmission. It is running a PSI conversion harness with an 08 tahoe E38 ecm and T42 tcm. I swapped in 2wd...

I have played around with the friction airflow and startup airflow and it starts decent now. Its still pretty weak at startup then ramps up to the commanded idle after a few seconds. Do you generally...

The IAC does end up dropping down under 100 once it warms up. Also if you watch while its struggling to grab a good idle the IAC isnt jumping up or anything crazy like it cant get enough air from it...

I am working on a LQ9 in a Tahoe with a sloppy stage 2 cam, longtubes, and a 90mm TB. Overall it runs decent but I am having some afterstart issues. When its cold (sitting in 65 degree shop...

Cool, thanks for the info man. Last but not least, will I need the 17 or 40 tooth reluctor wheel in the th400 to get the speedo to work correctly? I have read in a few places that the manual and auto...

I do have a TBSS TCM I could run with the E40. Could a person just run those and turn off all the trans codes? How do folks with automatic TBSS or GTO's run TH400s? That is basically what I could...

I dont have any ecm in the car currently, just happened to have a spare E40 out of my last swap that I was going to try to use. Can I just turn off all the trans codes in the auto ecm to make it work...

I purchased an 06 GTO that had a holley sniper to run the fuel and a msd LS coil box to control the timing. Car runs great with the TH400 that is in it currently but I want to boost it. The sniper...

I am working on a 2015 6.0 swapped jeep with a turbo 350 tranny that gets really cranky when it goes into closed loop. The motor came out of a silverado 4x4 and is in a 2x4 jeep now with a th350...

I swapped the t42 and trans segments from an 08 silverado 2wd and it worked for two drives which is better than I have had. I will let it sit overnight and see what the morning brings. Thanks for the...

Is the only way to change the OS to 2wd to license a new tune from the repository? I have a 2wd tune from the repository out of an 08 tahoe that uses the same OS 24239927 as I am currently running...

Here is the current tune I am running and 2 scans. One with the shifting issues and one after I disconnected scanner and cycled the key and it started shifting good. Any help on this would be greatly...

Yes, the original ecm I had didnt come with a T42 so I pulled an 08 stock tune and paid to unlock it then did a write entire to the T42 so I had the correct trans program. Then I used a 2wd tune to...

I used this tune and did a write entire to both the TCM and ECM just now and the thing still shifts instantly when you take off. I went to the salvage yard and grabbed a T42 out of an 08 tahoe just...

No codes set. My concern is with the 09 t42. I have seen where folks say you can just write it how you need it and others say you cant use an 09 and up with an 08 ecm.

Yes its a 15 pin 4L60.