TCC Lockup slip

[LBSBLOWN]

2001 4x4 Suburban 5.3
My question is, anybody know why GM chooses to let the TCC slip about
20 to 50rpm at light throttle, is there any problems known that may be caused if I increase the DC to get rid of the slip?

I've already made the changes and now have no TCC slip when Locked,
I've been monitoring the Trans temp in my data logs and it appears that
the trans temp is running cooler with no slip.

again why would GM want the TCC to slip, that seems like it would just
wear out the TCC clutch and cause unnecessary heat buildup.

[jimmyblue]

I can't tell you about GM's "thinking" other than that they
might have chosen 50RPM as "good enough" and servo
the line pressure to obtain the least tranny pump losses
in pursuit of CAFE goals. You can't close that kind of loop
with a zero slip setting.

I see 0% commanded line pressure when I'm cruising at
80MPH, and accelerating at torques up to 100lb-ft. That's
just retarded.