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Burb
08-20-2021, 07:49 PM
Like reading the knowledge base you have here!

'99 GMC Suburban C1500 5.7L
4L60E took a dump.
gearing up for 4L80E swap.
Sourced parts already (rebuilt trans, new TC, spline, adapter harness, fittings...)
need to flash PCM and contemplating the 0411 swap.

Cheers!

dave w
08-21-2021, 03:42 AM
:welcome:

Gearhead-efi link for OBD2 Tuning Information: http://gearhead-efi.com/Fuel-Injection/forumdisplay.php?32-OBDII-Tuning

dave w

Burb
08-24-2021, 06:05 AM
Thank you Dave for the link!
Contacted a local guy who comes highly recommended.
He won't tune any cars that get emissions tested.
I guess CA is cracking down on modified vehicles which puts me into the possibility of scheduling with a CA referee.
Can't find info on whether I can segment swap for the 4L80E into the factory black box PCM.
Thanks again, and will read the thread.