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2012 Chevy Volt 1.4L FWD
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Discussion Starter · #1 ·
Hey to anybody willing to read (thank you)! Please skip the first paragraph for the relevant information (just an intro since I'm new to the forum).

I am a recently new Volt owner and new to the forum. I bought a 2012 Chevy Volt at 80k miles around a half a year ago as my first independent car purchase; I've driven 7 lemons up until this point so I was really proud of myself for doing some research and choosing something "newer". I went in with the belief that this would also save me a lot on gas money as my job has EV chargers on site...and it has! I lived 17 miles from work when I bought the car and it would just get me to work and back without spending any money on gas with no stops most of the time; it was fun trying to find the best way to drive and save electricity. I then moved 7 miles away from work and it has been great, especially with the prices rising and I like the feeling of helping (a drop in the bucket, electricity source could be oil, etc etc I know) with a small amount of environmental awareness. Sorry for the long intro, just wanted to give my Mint Julep her props; I have the model on the right on the forum banner.

I have had no issues after having the dealer reset a battery sensor when I first got the car...until 3 weeks ago. I had just got done spending A LOT of money having my old car junked (a completely different issue with a lot of lessons learned) and decided to change my headlights that same day to replace one that had just gone out and upgrade both to brighter bulbs. Driver side replacement - no problems, passenger side replacement - the one that was out - requires a little bit of maneuvering to get the job done. To access the headlight enclosure I had to move a hose a few inches out of the way. I messed up this simple procedure by putting too much tension on a old rubber part and snapping the hose at a piece that inserts into the radiator side of the hose (pictures included). With coolant spilling everywhere I ran in to the apartment and grabbed my oil pans to collect the spillage and cleaned the pavement where I could so I don't kill the neighborhood cats/random critters lookin to taste that sweet sweet coolant juice.

After I got over my anxiety of having to spend more money to have this part replaced, I started searching. After going through this forum that has already been a good knowledge-base in only 6 months and some other sites, I found the parts I was looking for on a GM parts dealer website [the dreaded GM (20893308) - HVAC Heater Vent Hose and it's corresponding clamps GM (11516215)]. Twenty-eight bucks? Not bad. A lot cheaper than I thought. I try to use a "come-to-you" mechanic app to have it fixed since it's only a hose replacement and after waiting a week they call the day before the appointment and say they can't find the part and will wait for me to find it. Okay, that sucks, but now I have to wait a couple of more days to get it and have it replaced, I'm flexible. I order the part on GMDirectParts (one of plenty of these GM parts dealer sites) and request the shipment expedited to receive it in a week - a week and a half. A couple of days later, I receive a notification that the part is special order and I need to approve them taking more time to receive it. That's fine, I have no choice. The next day, I'm told the part is discontinued and they cannot get it either and the clamps are also out of stock and would also be a special order.
I then call two nearby Chevy dealerships...they're also out and I've been told to find it aftermarket. After trying to handle it myself I call my pops. My father knows some people in the auto business since he works in it as well and an OEM parts dealer he knows also did not have it in their inventory and told him to tell me to Google it and it should pop up. I've been searching for it for weeks already and the closest Chevy (truck) dismantler doesn't have it of course and the best Chevy-only dismantler is about 100 miles away. Lesson learned: when accessing the passenger-side headlight, PLEASE be gentle with the coolant hose that is in the way of the enclosure. Does anyone...ANYone know how to find a discontinued Volt part or can tell me of any good replacement parts that will work, specifically for this hose which does not seem to exist anymore. I feel like I just bought an old phone that no longer has supported software, except now instead of just missing out on popular app updates I've been stuck with inefficient public transportation as my backup which I'd use if it didn't take so long to get to work everyday (15 min drive to 1.5 - 2 hr commute one way).

TL;DR: I broke an engine cooling hose [GM (20893308) - HVAC Heater Vent Hose] that attaches the the radiator to the passenger-side coolant reservoir and the part is discontinued. I've been searching for the part for about three weeks (GM parts dealers, Chevy dealerships, dismantlers) and have found nothing. I am not sure if I'm mislabeling and have not found the right post on here yet. If you have any info on where/how I can retrieve or replace this part, please do let me know. I have attached images to this post of the part and the broken hose. Thank ya'll out there and happy E driving!
 

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2011 Volt Premier (0737); 2010 Highlander Hybrid; 1993 K3500 6.5TD former ambulance
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Your photo #6 seems to show the actual piece of the hose assembly that is broken. It has a number stamped on the edge, but I can't read it from the photo. I'm wondering if you can just replace that piece, rather than the whole hose assembly. If you haven't already done so, I suggest that you Google the number that is stamped on the part and see if you can buy it, then replace it in the existing assembly. The arrow for flow direction makes me think it is a check valve or filter. If it's the former, you might be able to find a plumbing check valve as a short term fix. It appears that the broken part is attached to the hose with a simple zip tie.
 

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2012 Chevy Volt 1.4L FWD
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Discussion Starter · #3 ·
Your photo #6 seems to show the actual piece of the hose assembly that is broken. It has a number stamped on the edge, but I can't read it from the photo. I'm wondering if you can just replace that piece, rather than the whole hose assembly. If you haven't already done so, I suggest that you Google the number that is stamped on the part and see if you can buy it, then replace it in the existing assembly. The arrow for flow direction makes me think it is a check valve or filter. If it's the former, you might be able to find a plumbing check valve as a short term fix. It appears that the broken part is attached to the hose with a simple zip tie.
I actually noticed that when I was sending the pictures out last night and tried to look it up. Unfortunately it's not enough digits for a GM part, but I truly did not know its function. Pointing out the arrow showing the direction of flow makes a lot of sense. I will be looking up check valves and filters so I do appreciate the tip.
 

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2011 Volt Premier (0737); 2010 Highlander Hybrid; 1993 K3500 6.5TD former ambulance
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If you post the number, maybe someone will be able to find it. Since it's a subcomponent of an assembly, it makes sense that it doesn't have a GM part number. Probably made by another manufacturer.
Good luck!
 

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2011 Premium, Nav (added back-up camera! :)
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the gates hose is just straight 1/4 hose sold by the foot
 
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For a ten year old Volt, I would use a cheap Gates generic straight hose. How important is the check valve? Probably not a big deal and you can get away with the hose alone. That will get the car back on the road and give you time to figure out if a model-specific hose can be found.
 

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2011 Highlander Hybrid, 2017 Volt Premier
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I can see the valve is made of two plastic parts attached to each other with some lockers. Could it be unlocked? In that case you could:
1. See what exactly the part is
2. Try some repairing
 

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this site seems to think they have it in stock... EDIT: also say genuine chevrolet (may not be OEM?)
 
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Discussion Starter · #10 ·
If you post the number, maybe someone will be able to find it. Since it's a subcomponent of an assembly, it makes sense that it doesn't have a GM part number. Probably made by another manufacturer.
Good luck!
Yes, the number on the plastic part (I have found out it is a check valve) is 221211 and is some part made in Germany. However, I have found an alternative and will add it as a separate reply.
 

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Discussion Starter · #11 ·
There are a lot of similar responses and after digging into the UPPER RADIATOR HOSE tag, I see there actually is another post describing the same issue by user azxiphoid. It looks like my current solution will be to purchase a GATES hose (thank you for the link) and for safe measure add a generic aluminum alloy check valve between the two sides connecting to the reservoir and radiator. As per azxiphoid's post: Here is a description of the check valve we used, you can do a search: 8mm 5/16" Fuel Non Return One Way Check Valve Petrol Diesel Aluminium Alloy which I was able to order from Amazon and will be repairing once the part is in tomorrow. There are even images of their results on there post. I would like to thank you all for the help so far!

To the mods of the forum: Are we allowed to link to their post?
 

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Discussion Starter · #12 ·
Oh, one more response that I hope can help find any difficult parts: in my search since making this post, I have found a website called YoYoPart in which they have a full list of the OEM parts AND alternative interchangeable parts. I did a search to find out if the website is legit and it seems to be, it's just run out of China so if anything, you can use their repository for interchangeable part numbers and purchase elsewhere if you don't want to go through them, but they provided a very long list of replacements from different manufacturers (other car brands and aftermarket included). A lot of them do not have images for my specific part though so I had to search them external to the site to see if they work.
 

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Oh, one more response that I hope can help find any difficult parts: in my search since making this post, I have found a website called YoYoPart in which they have a full list of the OEM parts AND alternative interchangeable parts. I did a search to find out if the website is legit and it seems to be, it's just run out of China so if anything, you can use their repository for interchangeable part numbers and purchase elsewhere if you don't want to go through them, but they provided a very long list of replacements from different manufacturers (other car brands and aftermarket included). A lot of them do not have images for my specific part though so I had to search them external to the site to see if they work.
This is an example of why I love this forum. Folks getting help, then helping folks. Thanks for following up with the info you learned along the way, so that it's easier for the next person.
On that note, once you get your radiator hose repaired, watch out for MAF (Mass Air Flow) sensor codes. It's not related to the broken hose, but is another possible collateral damage from the headlight repair on the passenger side. When I replaced my headlights, I went a little too caveman on the air filter box that was in the way. I should have disconnected the connector to the MAF. Instead, I just shoved the box aside to get access to the back side of the headlight. I damaged (or hastened failure) of a wire at the connector to the MAF sensor. I found the damage only after installing a new MAF sensor, which was not needed.
Keep up the good work Va-Va Volt!
 

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Discussion Starter · #16 ·
This is an example of why I love this forum. Folks getting help, then helping folks. Thanks for following up with the info you learned along the way, so that it's easier for the next person.
On that note, once you get your radiator hose repaired, watch out for MAF (Mass Air Flow) sensor codes. It's not related to the broken hose, but is another possible collateral damage from the headlight repair on the passenger side. When I replaced my headlights, I went a little too caveman on the air filter box that was in the way. I should have disconnected the connector to the MAF. Instead, I just shoved the box aside to get access to the back side of the headlight. I damaged (or hastened failure) of a wire at the connector to the MAF sensor. I found the damage only after installing a new MAF sensor, which was not needed.
Keep up the good work Va-Va Volt!
Thank you thank you! I will definitely keep an eye out for the MAF - another sensor code would have freaked me out after repairing a part so much thanks. I also plan to take the car in soon after for it's scheduled oil change/tire rotation. I could change the oil myself, but will use the opportunity to use the oil change + tire rotation "sale" and free multi-point (I know it doesn't include EVERYTHING, but just want to make sure MJ's looking decent after the swap).

The knowledge you all have on this forum is SO helpful. There are some serious mechanics, engineers, and tinkerers on here - even if not by title - that Chevy would be lucky to have if they could. Just want to contribute however I can.
 

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Yes, the number on the plastic part (I have found out it is a check valve) is 221211 and is some part made in Germany. However, I have found an alternative and will add it as a separate reply.
After reading this thread I had to look for this hose on my 2015. I have installed 3 different sets of headlight bulbs until I found some I liked, and honestly I never even noticed that hose until now. In my car, the hose is down low, at the same level as an orange cable parallel to it. It never got in the way when changing the bulb, but I always disconnected the air cleaner housing and swung it out of the way. But thanks to you I’ll be sure to steer clear of that hose and valve in the future.
 
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