Hey guys, lost A/C in my 05 Chevy Suburban last week. Been looking into it today.
Here’s what I’ve found so far. A/C compressor doesnt kick on at all. Checked fuses and relays, they seem fine. Checked voltage at the low pressure switch. Voltage is good there. Checked voltage going to the compressor clutch. No voltage at all there. Cant seem to locate the high side pressure switch to check voltage going there.
I also hooked up the manifold guages and I’ve got 40psi on the low side at ~80° ambient temp. Got 40psi on the high side too, cuz uhh… no compressor action lol.
Not sure what this points to or where to look next. Suggestions?