1983 HEATER BOX BROKEN

kwick

Junior Member
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Mar 12, 2022
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Location
Marinette, WI
First Name
Kevin
Truck Year
1983
Truck Model
K5 Blazer
Engine Size
305
The heater box underneath dash is broken, the blend doors are snapped off and it appears that the previous owner used a heater core that was incorrect for the box. He also did not put the vacuum lines back together correctly. My questions:

1. can you purchase a new heater core box with the blend doors etc aftermarket and where if anyone has a link?
2. is there a vacuum hose wiring diagram anywhere to be found ?
3. does anyone have a heater core box they want to part with ?

Thanx, Kwick
 

Ontheboulder

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Location
colville,wa
First Name
greg
Truck Year
1987
Truck Model
gmc sierra classic v2500
Engine Size
350
Check LMC truck or classic industries
 

WP29P4A

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Location
Nevada
First Name
Mike
Truck Year
1987
Truck Model
Sierra Classic V1500
Engine Size
350 TBI
This might help.
 

Attachments

  • Chevy 350 vacuum hose diagram.gif
    Chevy 350 vacuum hose diagram.gif
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  • Vac diagram 1.gif
    Vac diagram 1.gif
    8.3 KB · Views: 20

Snoots

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Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
You must be registered for see images attach
 

kwick

Junior Member
Joined
Mar 12, 2022
Posts
5
Reaction score
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Location
Marinette, WI
First Name
Kevin
Truck Year
1983
Truck Model
K5 Blazer
Engine Size
305
any chance a 1988 blazer heater core would work? found a parts blazer but it is an 1988
 

Snoots

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Location
Georgia
First Name
Roger
Truck Year
1973
Truck Model
Jimmy Sierra
Engine Size
350
You'll have to pull your old one and measure it.

The info is on the GMSB home page.
 

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