Heater and ducts and vents - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sky56 · 10-07-2009, 12:53 AM

Hello all i have a 77 k10 and it is my first chevy truck but i am not new to the car world. My k10 has the custom deluxe trim/package and i have some questions in regards to my heater and all that. In the truck i have the heater unit that has the 3 speed switch on the left hand side and the selector switch to the right for off/heater/def and below that the switch for cool/heat.

I am curious to know that since i have the lmc truck catalog it appears that i should have ducts and vents and all that (page 132 of the newest 73-87 catalog) I have the opening but no vent in 2 spots 1 to the left of the headlight switch and the other above the heater unit. To the right on the passenger side is a wood panel that says custom deluxe on it and covers what would be 2 poss vent spots according to the diagram.

So am i missing 2 vents and some duct work? or no because its the custom deluxe and i dont have factory a/c? and if thats the case do i have the wrong dash bezel? any info on this would be great. The heat works great in my truck and im not a fan of vent heat because it dries my eyes out but i would like the interior to look better of course. Thanks to everyone who can shed some light on my confusion. Take care

79gmcc15 · 10-07-2009, 01:00 AM

Ya the extra vents are for the AC. it may not be because yours is a custom deluxe it just wasnt what the buyer wanted when he got it. the heat comes out of the bottom anyway.

**old Rusty C10** · 10-07-2009, 09:57 AM

on the non ac trucks you have no dash vents except by the windshield. If you have the bezel with vents above the radio and next to the headlight switch, someone changed the bezel to an A?C equipped bezel

10-07-2009, 12:53 AM	#1
sky56 Registered User Join Date: May 2009 Location: Chicago, IL Posts: 26	Heater and ducts and vents Hello all i have a 77 k10 and it is my first chevy truck but i am not new to the car world. My k10 has the custom deluxe trim/package and i have some questions in regards to my heater and all that. In the truck i have the heater unit that has the 3 speed switch on the left hand side and the selector switch to the right for off/heater/def and below that the switch for cool/heat. I am curious to know that since i have the lmc truck catalog it appears that i should have ducts and vents and all that (page 132 of the newest 73-87 catalog) I have the opening but no vent in 2 spots 1 to the left of the headlight switch and the other above the heater unit. To the right on the passenger side is a wood panel that says custom deluxe on it and covers what would be 2 poss vent spots according to the diagram. So am i missing 2 vents and some duct work? or no because its the custom deluxe and i dont have factory a/c? and if thats the case do i have the wrong dash bezel? any info on this would be great. The heat works great in my truck and im not a fan of vent heat because it dries my eyes out but i would like the interior to look better of course. Thanks to everyone who can shed some light on my confusion. Take care Last edited by sky56; 10-07-2009 at 12:57 AM. Reason: update on info

10-07-2009, 01:00 AM	#2
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: Heater and ducts and vents Ya the extra vents are for the AC. it may not be because yours is a custom deluxe it just wasnt what the buyer wanted when he got it. the heat comes out of the bottom anyway. __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby Last edited by 79gmcc15; 10-07-2009 at 01:00 AM.

10-07-2009, 09:57 AM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,277	Re: Heater and ducts and vents on the non ac trucks you have no dash vents except by the windshield. If you have the bezel with vents above the radio and next to the headlight switch, someone changed the bezel to an A?C equipped bezel __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!



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