Heat and AC

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Chevy 88

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Mar 28, 2025
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Location
Canada
First Name
f7t6
Truck Year
1988
Truck Model
GMC
Engine Size
350
By the way I am not a seasoned computer tech. I do not know how to send pics of anything. Maybe I can get one of my grandkids to help me in that endeavor.


Would you like some help learning how to do this? It is the way of the future, and you will fall further and further behind if you don't keep up with the mainstream technology. Its not difficult at all, its just unknown to you. Here to help if ya want. I'm sure others here would be willing to help as well. What brand of smart phone do you have?
 

ss454elco

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Apr 22, 2024
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35
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Location
Pennsylvania
First Name
Rod
Truck Year
1984
Truck Model
K10
Engine Size
350
I would check the diverter valve by the tank and check the selector switch on the dash.
 

SCD1956

Junior Member
Joined
May 27, 2025
Posts
9
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Location
FWB Florida
First Name
Steven
Truck Year
1987
Truck Model
R10
Engine Size
305
Does anyone have a diagram on how the ductwork is identified to help me re-install the ductwork properly on my 87 R-10?
 

Old Guy Bill

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Supporting Member
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Sep 10, 2023
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981
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Location
KY
First Name
Bill
Truck Year
1978
Truck Model
K20
Engine Size
400
Does anyone have a diagram on how the ductwork is identified to help me re-install the ductwork properly on my 87 R-10?
It'd be best if you asked this in a separate thread but...
always check LMC, etc, for diagrams..
This is the best I can come up with.
You must be registered for see images attach
 

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