E38/T43 2011 Sierra
Trying to write calibration to T43---Bootloader Timed out/Data transfer . Tried several times.
Tried writing engine and T43 together--- writes engine, will not write trans.
I don't remember ever having this happen.
Trans works fine after the non write, just needs a few tweaks.
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
I had this problem with my 5th Gen Camaro. It was due to a bad USB cable. Had to buy a brand new one. Cant say that's your issue, but that's what it was for me. Might be worth a try.
I can write my other vehicles, and I can write the engine side on the tune in question. Just not the trans
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Can you re-read the TCM?
bootloader timeout errors are almost always related to a battery voltage or wiring issue with the vehicle. Unrelated to our hardware/software.
You can open a support ticket here https://support.hptuners.com/
I will give it a try---ThanksOriginally Posted by gtstorey
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
I made sure the battery was fully charged. It could be a wiring issue. It's been a long time since I did a trans tune change on this. I will try gtstoreys suggestion and go from there. Thanks
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Well, that's weird. Yes, I can read the trans portion of the tune by itself and the engine tune by itself. I am going to use the read that I just did, and modify it and then try and write it by itself.
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Made tune changes to trans, Did a write calibration and it timed out again. I can read, but not write ???
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Sounds like interference on the network.
I don't get that (interference on the network)?
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Something in the wiring disrupting comms with the ecm.
You can open a support ticket here https://support.hptuners.com/
I thought he meant between my ears.
I don't know that I can figure this out. There must be different wires for reading and for writing. ?
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Not different wires but there could be more built in protection since interference/static/noise/ while writing to the module is much more likely to cause a serious problem than just reading it.
Are there any aftermarket items that might be tied into the network like a radio? Have you done a visual inspection of the wiring?
There is a radio, but it is the stock radio and is off. I have removed the trans plug and reinstalled and the two computer plugs. All the wiring looks good?
One thing---the external fuel pump is running when I am trying to write. Just thought about that. I will pull the plug on that and try again.
That wasn't it.....
Last edited by Lakegoat; 07-10-2024 at 10:24 AM.
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
Reply With Quote