Orifice tube location

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lifted89

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Jul 20, 2026
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iowa
First Name
Dan
Truck Year
1989
Truck Model
Suburban
Engine Size
6.0 Ls
89 suburban with rear ac. Where is the orifice tube located?
 
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goldpack

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Donnie
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1986
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GMC C2500 Camper Spec.
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350 with 350 3 speed
you might find a schematic on charm.li in Lichtenstein
 
Blue Ox

Blue Ox

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Derek
Truck Year
MCMLXXXV
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K20HD
Engine Size
6.2L
At the front evaporator core inlet on the firewall. The rear uses an expansion valve in the rear evaporator.
 
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