Lurching 40 to 50 mph slight hill

[Dave LV]

Just above 40 mph with the torque converter locked, flat or slight hill (2-7 degrees), slight throttle that keeps torque converter locked but puts some load on drivetrain. AC on, but I don't think it makes a difference.

Jerks longtitudinally, like poor gas with engine miss but no engine light comes on.

Local dealer has requested GM to send an engineer to look at it. They have seen it on on several H3's but none as worse as mine.