Where do you connect the hose to recharge AC on a 2000 Chevy Silverado?

Answer 1

The low pressure port of the A/C system usually has a blue or black dust cap and is located either on the larger diameter metal tubing typically found between the evaporator and compressor, on the compressor itself, or on the receiver drier (orifice tube systems only). The high pressure service port is found either on the smaller diameter tubing or the compressor and is larger in diameter. Only charge through the low pressure port.

Its located on the accumulator which is near the firewall on the passengers side........