03 yukon part name help

[nameredacted33]

Wassup everybody, like the title says I am needing help with the name of the parts I'm looking to replace on my 03 yukon. The rear heater lines that go to the auxiliary heater core have a good sized crack in them, which is located on one of the lines that lead to the rear heater core. When I got the yukon its heater core had been bypassed so I figured the leak was in the main core up front. Well,, as I have been working on the rear main seal replacement job, I noticed the crack in the line heading back to the rear heater core, I've removed and pressure tested the rear core and it isn't leaking at all, and I have checked the front core as well, no issues there, so I figured it must be somewhere in the lines themselves that was leaking but didn't locate anything at the time. Well after getting down under the beast to work on the main seal this last time I was sliding my way out from under the yukon and boom right there was a large crack in the solid metal (aluminum or stainless steel) portion of the lines headed back to the rear core. I've looked on several part supply stores and can't find the metal lines for sale on any of the sites, but I know they surely sell replacements. I've not been able to find the correct term for those lines in my repair manual or on the parts lists that ive been scrolling through to find a replacement to order. So can anyone help me with the correct term that I can search for so I can order a set of replacement coolant lines again theyre the.metal lines tucked under the passenger side of the body that run the length of the yukon and hook up to the rubber hoses that go to the heater core in above the right rear wheel area. I have found all the other hoses for sale but haven't found those ones in particular. Any help is greatly appreciated.

 

[Joseph Garcia]

Did you go to GMPartsDirect.com and enter your VIN? You should be able to find them under the Cooling sub-section, using their exploded parts diagram. The real question is whether or not they still carry them for your year truck, or if they've been discontinued.

 

[Marky Dissod]

Did you go to GMPartsDirect.com and enter your VIN?
You should be able to find them under the Cooling sub-section, using their exploded parts diagram.
The real question is whether or not they still carry them for your year truck, or if they've been discontinued.

Free GM Vin Decoder | GMPartsGiant

Free GM VIN Decoder - Do a VIN lookup to acquire specific car information. Ordering exact-fit parts has never been this smooth and hassle-free on GMPartsGiant!

www.gmpartsgiant.com

Put your VIN in after the equals sign.

NOTE: GM Parts Direct's data base is helpful, but lately their reputation for actual parts & services has been less than stellar.
You may want to learn what you need to learn from GM Parts Direct, then shop around.

 

[Badbob]

Go to a good radiator shop that does ac as well
My 05 Tahoe had a similar problem with no ac in rear, they cut out damaged line and spiced in a new section I think some companies make a kit to fix the problem. Its a problem with lines corroding over rear tire
Northeast salting of the roads

 

[nameredacted33]

Did you go to GMPartsDirect.com and enter your VIN? You should be able to find them under the Cooling sub-section, using their exploded parts diagram. The real question is whether or not they still carry them for your year truck, or if they've been discontinued.

I can honestly say hells to the no I haven't, however I guarantee I will right now. Thanks for the info to the parts site that'll at least give me the right name. That way I don't sound as dumb as I look when I ask for the part. If they still make them or not won't bother me too badly. I'm the son of MacGyver. If they don't make the parts anymore, a couple toothpicks, a napkin, some long sections of rubber heater hose, several hose clamps, and a couple zip ties and I can make it happen all the same. I just wanted to replace them if possible without having to do anything too fancy.

 

[nameredacted33]

Go to a good radiator shop that does ac as well
My 05 Tahoe had a similar problem with no ac in rear, they cut out damaged line and spiced in a new section I think some companies make a kit to fix the problem. Its a problem with lines corroding over rear tire
Northeast salting of the roads

yeah, I know all about salting roads during winter I'm in Oklahoma though, so it's not as often they get salted here. I scooped this Yukon up for a pretty good deal all things considering. I got the kid I got it from to throw in the amp and subs for 200$ saved me a lot of legwork to get all that together and was a way better price than finding the subs and amp individually. It's a 4x4 so my wife could maybe drive it in the wintertime, which is why I've been procrastinating on finishing the rear main seal. It is such a PITA to get changed in this beast. I'm going to finish it today though, I've had too many projects to do and knocked a lot of them out, this is one of the last big ones on my to-do list. The section that has cracked is under the front fender well didn't notice it at first, but after doing the oil pan gasket, maintenance and now the rear main seal job, one of the times getting under or out from under, i noticed the crack. looks like a rock or something hit the line and popped it under pressure.

 

[nameredacted33]

Free GM Vin Decoder | GMPartsGiant

Free GM VIN Decoder - Do a VIN lookup to acquire specific car information. Ordering exact-fit parts has never been this smooth and hassle-free on GMPartsGiant!

www.gmpartsgiant.com

Put your VIN in after the equals sign.

NOTE: GM Parts Direct's data base is helpful, but lately their reputation for actual parts & services has been less than stellar.
You may want to learn what you need to learn from GM Parts Direct, then shop around.

you read my mind brother!

 

[Fless]

@rdezs posted a solution, so see the link below for ideas.

Heater Hose - Aluminum Parts Upgrade

Has anyone replaced the plastic hose connections on the firewall with metal aftermarket parts? Specifically the Dorman T connector and the Dorman 800-409 adapter? I attached pictures of these parts below for your reference. I have ordered these parts because I want to minimize the risk of...

www.tahoeyukonforum.com

 

[Rocket Man]

Wassup everybody, like the title says I am needing help with the name of the parts I'm looking to replace on my 03 yukon. The rear heater lines that go to the auxiliary heater core have a good sized crack in them, which is located on one of the lines that lead to the rear heater core. When I got the yukon its heater core had been bypassed so I figured the leak was in the main core up front. Well,, as I have been working on the rear main seal replacement job, I noticed the crack in the line heading back to the rear heater core, I've removed and pressure tested the rear core and it isn't leaking at all, and I have checked the front core as well, no issues there, so I figured it must be somewhere in the lines themselves that was leaking but didn't locate anything at the time. Well after getting down under the beast to work on the main seal this last time I was sliding my way out from under the yukon and boom right there was a large crack in the solid metal (aluminum or stainless steel) portion of the lines headed back to the rear core. I've looked on several part supply stores and can't find the metal lines for sale on any of the sites, but I know they surely sell replacements. I've not been able to find the correct term for those lines in my repair manual or on the parts lists that ive been scrolling through to find a replacement to order. So can anyone help me with the correct term that I can search for so I can order a set of replacement coolant lines again theyre the.metal lines tucked under the passenger side of the body that run the length of the yukon and hook up to the rubber hoses that go to the heater core in above the right rear wheel area. I have found all the other hoses for sale but haven't found those ones in particular. Any help is greatly appreciated.

I replaced the rear ac lines with retrofit rubber ones from https://www.autocoolingsolutions.com/products/rear-ac-line-set-sub6050 but I thought the heater lines were rubber and the ac lines are they hard lines. I seem to remember replacing the plastic quick connects that are just like the front ones on the heater lines.