WOULD LIKE TO CHECK A/C PRESSURE LEVELS on 2006 Chevrolet Monte Carlo

A/C IS NOT AS COLD AS IT SHOULD BE. WANT TO HOOK UP GAUGES , FOUND LOW PRES. PORT , CANNOT LOCATE HIGHG PRES. PORTANY WHERE UNDER THE HOOD!

1 answer 1 comment
Should be on the A/C Discharge hose/line from the compressor to the Condenser
Finally found it under & between throttle body flex port & radistor overlow tank. Just about everything on this car never had "service friendly" in mind, no wonder GM is in trouble.