Need location of low presure service port in 2006 gmc savanna?

The low pressure service port on a 2006 GMC Savana is typically located on the accumulator or the A/C line that runs between the evaporator and the compressor. It is usually a larger port, often with a blue cap, and is situated near the front of the engine compartment. To find it, look for the A/C lines running from the compressor and follow them towards the firewall. Always ensure the engine is off and the A/C system is not under pressure before attempting to service.