I have a 2004 Silverado Z71 4x4 with a 5.3L engine. The A/C no longer works and just blows warm air. I bought a can of coolant and with the engine running, attached the pressure gauge on the can and found it reads around 130 lbs - way in the red. With the A/C turned on (at least at the controls), I watched the compressor and after several minutes, never saw the compressor kick on.
I've read several blogs about setting contacts on relays, and other stuff, but they all seemed to be for low compressor psi.
So... where do I go from here? Is 130 lbs normal if the compressor clutch isn't kicking in? How can I troubleshoot what is going wrong?
Thanks!
I've read several blogs about setting contacts on relays, and other stuff, but they all seemed to be for low compressor psi.
So... where do I go from here? Is 130 lbs normal if the compressor clutch isn't kicking in? How can I troubleshoot what is going wrong?
Thanks!