L5P SOTF HPT vane position not working

Jakezed22

Jakezed22

Active member
Dec 2, 2016
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2017 L5P

I’ve applied the SOTF patch, enabled the oem+5 and performed write entire.

I cannot get it to use the SOTF vane position tables. Always commands what is in table C1 as far as I can tell.

Slot 3 is set up for 95 percent idle
Slot 4 is set up for 5 percent idle.

I’ve set th overrides to -40 also to get that out of the way.

What else could I be missing here?
 
gmduramax

gmduramax

Shits broke
Jun 12, 2008
4,185
326
83
Nor cal
What did you use to unlock the ecm?
Did you clear codes before starting?
I’ve seen a couple trucks completely ignore the tune change either until a couple restarts or disconnecting and reconnecting the batteries. Strangest things ??‍♂️
 
Jakezed22

Jakezed22

Active member
Dec 2, 2016
329
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gmduramax said:
What did you use to unlock the ecm?
Did you clear codes before starting?
I’ve seen a couple trucks completely ignore the tune change either until a couple restarts or disconnecting and reconnecting the batteries. Strangest things ??‍♂️
Click to expand...
Unlocked with hpt box.

Did not clear codes

I’ll try clear codes and disconnect batteries.
 
Jakezed22

Jakezed22

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Dec 2, 2016
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gmduramax said:
Always had issues with hpt box. Worst case flash back to stock entire. Reflash entire. Clear codes and should take.
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Ok I’ll try that. I have done a few entires but never went back to the stock file. Should I be worried that some exhaust parts are missing to go back to stock even for just a quick flash?
 
gmduramax

gmduramax

Shits broke
Jun 12, 2008
4,185
326
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Nor cal
Yes and no lol 17-19 you can clear easily with most scan tools. 20+ is a pain in the ass and you’ll need a scan tool that can clear the DIC

Edit. If you can’t clear a message on the dic, try clearing it with the engine off key on, and engine on. The DIC needs a signal from the ecm that everything is okay before it will clear.
 
gmduramax

gmduramax

Shits broke
Jun 12, 2008
4,185
326
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Nor cal
Chevy1925 said:
I hate the sotf crap for the new trucks. They just dont seem to work as well as the old dsp setup.
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They work when the truck feels like it ? I also found if map sensor isn’t working correctly the truck will run in some weird mode I haven’t figured out why yet.
 
Jakezed22

Jakezed22

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Dec 2, 2016
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gmduramax said:
They work when the truck feels like it ? I also found if map sensor isn’t working correctly the truck will run in some weird mode I haven’t figured out why yet.
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Isn’t their mode override supposed to solve that tho? Or is there more modes then they have mapped.
 
gmduramax

gmduramax

Shits broke
Jun 12, 2008
4,185
326
83
Nor cal
Jakezed22 said:
Isn’t their mode override supposed to solve that tho? Or is there more modes then they have mapped.
Click to expand...
I’m not 100% sure. Had a truck that would boost creep at idle and start dumping fuel into the exhaust. Ghost regen, EGR opening, or cat plugging. Not sure what was going on ?
 
Jakezed22

Jakezed22

Active member
Dec 2, 2016
329
178
43
gmduramax said:
I’m not 100% sure. Had a truck that would boost creep at idle and start dumping fuel into the exhaust. Ghost regen, EGR opening, or cat plugging. Not sure what was going on ?
Click to expand...
Wow, seems like HPT may need to look into it.

Tried stock file and back to custom. Cleared codes, unhooked batteries for 20 minutes. Still no luck.

Can confirm my timing table changing tho , so I’m just having trouble with the vane positions
 
gmduramax

gmduramax

Shits broke
Jun 12, 2008
4,185
326
83
Nor cal
Jakezed22 said:
Wow, seems like HPT may need to look into it.

Tried stock file and back to custom. Cleared codes, unhooked batteries for 20 minutes. Still no luck.

Can confirm my timing table changing tho , so I’m just having trouble with the vane positions
Click to expand...
If you drive it around, it may fix itself.
 
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