Normal cycling for A/C compressor

[alvocado]

2011 Yukon, 5.3L with 106,000 miles. I noticed my A/C compressor is cycling on and off every 6 seconds with a loud click. I know it's normal function to cycle but what is considered normal cycle timing? If the cycling is too frequent, any advice on troubleshooting would be helpful. It's been a little tough to check the cabin air output temps in cold weather but I haven't noticed anything abnormal on warmer days. I need to pick up a gauge to check high and low pressures to confirm the system hasn't leaked refrigerant but assuming that's ok, what else should be checked? 

[muddkatt]

Chances are that its low on refrigerant.