Saved me a lot of typing. Thanks.
The recommended amount is ONE GALLON for the 3-channel ABS-equipped GMT400s.
Bleed a pint out of each wheel cylinder (1/2 gallon)
Activate the self-bleed procedure on the ABS using a scan tool, four or six times depending on the ABS unit
Bleed another pint out of each corner (second 1/2 gallon)
Good luck.
Thanks for this! Saving that PDF to the GMT400 folder. Looks like I may need to order some more fluid as I am planning on having my mechanic flush the ABS module as well.
It does seem odd that there's such a huge discrepancy between the recommended amount of fluid from GM and what others here have reported though. I wonder if the GM procedure is excessive by design...