Boomer17

1999 XL, 4.2. Looking for the low pressure service port to recharge my A/C. Anyone know where it's located?

CombatPOG

If you are standing in front of the truck, look to the left front of the engine bay. You'll see a small black cap... there she be

ProjectSHO89

That would be the HIGH side port. Leave it the hell alone if you do not know what you're doing.

The LOW pressure service port is going to be either on the accumulator can or on one of the hard lines immediately adjacent to it. On this engine, IIRC, it's on one of the lines.

Boomer17

Actually found this on another thread. The one circled in blue is the low side. I charged up my system yesterday and it's working great! Thanks for the inputs!