E78 AC Compressor Spark Retard?

[496Stingray]

Guys just curious if there are any tables that affect the spark related to the AC such as the Gen III ECMs did in table B4358?
Reason I ask is on a level cruise I noticed a few time where the TQ Spark Red Commanded jumped up considerably for no apparent other reason. Level cruise 75MPh, no changes in engine airflow/throttle/fueling/loads. TCC was locked the entire time in 6th gear as well.

Thanks in advance.
Vehicle is 2011 GMC 2500 HD 6.0/6L90

[GMPX]

Probably but it would come via a torque reduction request rather than a specific A/C spark table (I'm assuming).

[496Stingray]

Yep it is just logged and tested it on the freeway. Now the question is why cut power to engage a load?? So we really feel it ... GM logic escapes me on this one. Anyone know how to disable it? I cycle the AC and it dips 20 degrees each time I flip he AC back on.