03 bravada stalls while idling during warm up w a/c on

I have a 03 bravada 4.2 L6 with 83,000 miles it runs great but I haven been noticing on the first start during warm up I usually take my kids to bus stop about a block away and it sits and idles and noticed that when the ac compressor cycles the engine will idle higher and then it idles lower once compressor shuts off but every once in awhile it will stall then i restart it and it's fine and does not do it when it's in drive only does it in park yes I cleaned throttle body with no difference it seems I also replaced the throttle body gaskets it doesn't do it all the time it seems like it's hunting for the idle when the ac cycles
Anyone experience this and help is appreciated