04 chevy truck heater core replacement

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I'm trying to help a buddy with his truck. We can't get th connectors off the firewall side of the heater core. How do you do it?
Thanks
Dusty
 
I have fought those! never got them off! i cut them off with a sawzall. the replacements wont push onto the aftermarket heater core. I lube up a heater hose, push it past the bump and put hose clamps on it.
 
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There's a special release tool. Kinda like a big fuel line release tool. You need to slip it in from the end of the fitting, then push it to release the tangs. The trick is to force the tool in while pushing the quick connect fitting towards the firewall. rotate the tool several degrees back and forth. Once you've done that, gently pull on the fitting while wiggling up and down, all the while forcing the quick connect fitting and tool together.

It's a kind of tricky balance job.
 
I still say it's just the right touch. Several times now, my shop mate couldn't get them loose. He calls me over and usually I'll have them off without too much trouble. Same way with the Ford style connectors...
 
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Those increasingly easy-labor assembly line workers,and bean counting carmakers keep finding new cheaper ways to assemble a vehicle.Those "quick connects" do nothing but make it faster to put together todays overpriced vehicles.A hose clamp might take too long to align and tighten,so use a push on clip and call it a day.Nevermind the next guy that has to get it apart.I'm surprised Velcro motormounts and Dzus body fasteners dont make appearances soon.
 
its kind of a pain but using the quick release tools work. or just replace the hoses at the same time and do what ever you want with the connectors
 
Originally Posted By: NHGUY
Those increasingly easy-labor assembly line workers,and bean counting carmakers keep finding new cheaper ways to assemble a vehicle.


It's been discussed to death, but that's the reason cars are going more toward having no fuel filters. One less person to pay. One less part to order and inventory. One less area of the car that might cause a come-back at the final assembly and QC area.
 
Originally Posted By: Kruse
Originally Posted By: NHGUY
Those increasingly easy-labor assembly line workers,and bean counting carmakers keep finding new cheaper ways to assemble a vehicle.


It's been discussed to death, but that's the reason cars are going more toward having no fuel filters. One less person to pay. One less part to order and inventory. One less area of the car that might cause a come-back at the final assembly and QC area.


What cars have no fuel filters?

Are you getting confused by cars that have no external fuel filters? I've never heard of a car not having a fuel filter.
 
Originally Posted By: MarkM66
Originally Posted By: Kruse
Originally Posted By: NHGUY
Those increasingly easy-labor assembly line workers,and bean counting carmakers keep finding new cheaper ways to assemble a vehicle.


It's been discussed to death, but that's the reason cars are going more toward having no fuel filters. One less person to pay. One less part to order and inventory. One less area of the car that might cause a come-back at the final assembly and QC area.


What cars have no fuel filters?

Are you getting confused by cars that have no external fuel filters? I've never heard of a car not having a fuel filter.


I meant cars that have no USER REPLACEABLE fuel filters. I should have been more clear, but I thought people would pick that up on their own.
 
Napa has a "Heater Hose Removal Tool" #730-5632 for about $5. It is basically a 2-piece plastic collar that you assemble around the heater core pipe and slide into the fitting.

I tried to replace both fittings once. One of the replacements just wouldn't go on. After bruising my ribs, I finally just gave up and used one old and one new one. A dealership probably has replacements--expensive, but maybe they'll actually work. The cheap ones I tried go use were Dormans from Rockauto, part #800-409. I had a new custom heater-hose assembly, so Chris's idea about clamping the hose on with no fitting wouldn't work.

I should say this was on a 2001.

Good Luck
 
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