1. I do have the guages.
2. I know how to use them.
3. I know how to safely add 134
4. On 1st and 2nd look, I couldn't locate the inlet.

Can you guide me to it, and what I evidently need to remove, so that I can check the pressures?

What pressure range is correct for the low pressure if the freon is at the correct level? Just took care of my Tahoe and correct pressure was from 26-48 PSI.

Thank you

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1994 C280, dark green metallic
105k miles

1991 190E 2.6, Black
191,500 miles
(sold to another forum member)

2003 Chevy Tahoe LT, Redfire Metallic
105k miles

1989 Mustang GT Cobra Convertible
43k miles