39190 Heater Hose Quick Disconnect Tool for GM 3/4'' Heater Line Replacement (39190)

So while trying get my truck back on the road after a couple of years of sitting, like an idiot while try to make “just a little more room to remove the fuel injection I pulled too hard on the heater hose and the connection broke at the heater core. I was told it was the heater core and was going to have to remove the dash to fix it etc, etc. .turned out it was an adapter from the hose to the core which was a great relief. Found the adapters. After that, found this tool. After reading the negative reviews (which I usually check first), my anxiety level went way up. Having struggled with similar “quick release” tools for fuel lines with mixed results, and getting tired of throwing money into the truck I figured what’s another $10 for this problem. The reviews were like “overpriced “ , “wouldn’t fit”, “useless “, “junk”, blah blah blah. I thought maybe I could cut the fittings off without damaging the heater core. $10 gamble vs. all day and expensive core replacement? So I bought it. Yes it was a tight spot. Yes my luck with yythis type of tool wasn’t great. Yes you can’t get a grip on the broken piece and twist- turn-pull… The tool worked great but here’s a few steps that’ll make it work easily. 1) make sure it’s aligned correctly with the fitting. A little crooked and it won’t go in. 2) I had a long set of hose pliers that are hooked at the end similar to the ones in the picture I included. With the tight space you can grip, and twist it with enough room for your other hand to use the release tool. Makes it 100% easier! This tool is great quality. Aluminum instead of plastic. Hinged so you’re not fumbling with two half pieces in an already tight space. Small enough to fit and release. Sturdy enough to use many times. Anxiety gone! For this job anyway. 100% worth buying, even if you never use it again. One of the best things I’ve bought on Amazon. The screenshot of the pliers are similar to mine if that helps.

Update: I'm changing my review because I think it didn't work for me because the release tabs were still intact. The intact tabs were preventing the tool from sliding into the hose coupler. This tab is to be used if the release tabs are broken off. Does not work. Bought this after watching the how to video. This description included 2005 Chevy Tahoe. The device won't even go in to where it presses on the snap to release the hose. It's sturdy though. Feels like solid materials were used. I'm sure it works just like in the video, but it didn't work for my vehicle which was listed.

This little tool is absolutely great! Dont buy the cheap plastic ones that usually break after a couple uses. For a few bucks more, you can get this one to keep in your tool box for further use. Works like a champ.

This tool fits the size of the coupler and pipe very well but the inserted shape edge on the tool makes it extremely hard to insert because it grabs to much. I had to round off the shape edges (photo) than applied lube around the edge it slipped in with ease. I like the tool but that modification is very much needed. The location is too tight to be fighting with the tool that’s not designed better

While doing a head and cam swap I figured I'd update the heater core adapters on my 2000 Sierra to the SS versions. I was unable to get the inexpensive Lisle plastic disconnect tool behind the adapters and keep them from flexing enough to actually allow the adapters to release. Purchased this, had to shave a little bit of a radius into the outside of the engagement flange for it to properly seat but otherwise made it quite simple. Highly recommended.

Works as advertized

When the cheap plastic tools fail you, here comes this guy to save your day. Worth every penny, thank you so incredibly much. Highly recommend!!

Worked perfectly! Took just a couple minutes to work the tool into position and twist the hose flange to make sure it’s loose. pull the tool forward and once it slips under the locking part of the flange it’s off. Tool stays in place so it’s easy to retrieve.

Really made the job of replacing the heater hoses a breeze on a 2010 avalanche,,,little trickey at first ,,but with a little patience it worked

Absolutely perfect