Duramax Diesels Forum Truck of the Week
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Old 12-07-2019, 08:46 PM
Dirtyguy24 Dirtyguy24 is offline
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Default Truck just threw these codes today

My 2003 LB7 just threw
[P0700] Transmission Control System (MIL Request)
[P1621] Control Module Long Term Memory Performance
And my info panel says Range Shift Inhibited and idea on these?
I know I have to get the code out of the TCM
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Old 12-07-2019, 10:42 PM
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dndj dndj is offline
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Quote:
Originally Posted by Dirtyguy24 View Post
My 2003 LB7 just threw
[P0700] Transmission Control System (MIL Request)
[P1621] Control Module Long Term Memory Performance
And my info panel says Range Shift Inhibited and idea on these?
I know I have to get the code out of the TCM
P0700 means there are other codes stored in the TCM, post back when you have read those out.

P1621 is frequently set by incomplete programming or other internal failure of the ECM. Seems to happen with Bullydog programmers. Is your truck stock?
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2003 (LB7) 3500 dually EC/LB->FB, Allison by Scott@SDP, PPEI, AD100, Banks Intake+4" exhaust,CTS2
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Old 12-07-2019, 10:51 PM
Dirtyguy24 Dirtyguy24 is offline
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Okay well I have to wait on the P0700 Code But no my truck has a BullyDog GT Tuner in it
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