Here's what i got. 95 tahoe everything is new. From the control sw. All pressure switches condesor evap accumalator compressor lines everything. Then when they couldn't fix it's mine.i put 2.25 freon 8 ounces of pag oil 150- 1oz in cond. 3.5 in accum.3 in 2 in evap. And compressor. It still cycles like it is low. It turns on at 89 psi low side off at 72 psi. High side on at 64 psi and off at 90 psi .please i need some more ideas. I have been a tech since 1978 and never seen this before.