Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
The low side pressure was over 120?
That definitely sounds like an orifice tube issue.Do you plan to replace it yourself?
Sorry, took a second to get a diagram pulled up. The orifice tube is inside the ac line:
You will need to evacuate the refrigerant first of course.
The evaporator tube is right above the receiver dryer and comes from the firewall.
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Your question has dropped to my timed out list.