I work at a GM dealership and there have been several come in with radiator leaks, I'm told its a common problem, I believe with 20 and 21 years. You won't notice fluid at home because there is a cover under the motor that seems to catch it all. My co-worker's got caught by chance when it was in for an oil change. So far so good on mine but I have a 22, not sure if they fixed the issue or not on the newer ones. Wait and see I guess.

 

Thank you for the reply and insight. I’ll check for that and see if anything is there! I find it crazy that it isn’t a recall and after 36,000 miles isn’t covered…at least that’s what we were told. I figured it would be part of the power train warranty since it’s part of the operation of the motor. It’s the V6 btw.

 

Ahh, that makes sense. I really appreciate your input on this. It’s so unfortunate that you buy a new vehicle hoping to be problem free. We love our Blazer and has been a favorite car in years, but it’s really disappointing to be having issues like this that aren’t covered by the manufacturer. It appears to be a manufacturer defect but who knows 🤷.

 

These radiators today are made out of aluminum and plastic and have high failure rates. GM isn't alone in this. Ford had the highest number of recalls last year than anyone else. In today's car market, the grass is not greener on the other side. Roll the dice and pick your poison.

 

Thought I'd join this concern since I seen a reply to coolant leaks
Im just over 27000 I'm on my 2nd radiator need a 3rd leaking from the same upper left seams, I found duralast and osc I believe is the name of the brand, they have radiators about 300 to 400 a piece, I'm thinking this would be a better choice than the gm brand that's been failing us. This has been the only issue with our Blazer

 

Thought I'd join this concern since I seen a reply to coolant leaks
Im just over 27000 I'm on my 2nd radiator need a 3rd leaking from the same upper left seams, I found duralast and osc I believe is the name of the brand, they have radiators about 300 to 400 a piece, I'm thinking this would be a better choice than the gm brand that's been failing us. This has been the only issue with our Blazer

I read on another forum regarding this...it was said that during the last few years(pandemic) the radiator seals were from a 3rd party vendor that was obviously making crap! This supposedly has been corrected now. That's why so many have needed repeated radiator repairs. Fingers crossed that I don't go thru this. I've got a '22 that had a December 21 build date. But I've seen 22 and 23's with leaks as well. I've got 4500 miles on mine so for (purchase date 4/20/22).

 

We have a 2019 Blazer RS and ours is in now for a radiator leak. Having to replace the radiator. We love the Blazer, but between the tires that wear so quickly( on our third set) and now the radiator, I’m a bit disappointed.

 

Right! For being a higher trim and pricey as they are the Radiator shouldn't even be the last thing that gives out, I mean we cant expect perfect all the time but if your choosing a NEW vehicle theres not much of an excuse to use cheap quality material for long term parts,
I suggest Vogue Tyre and lowering the vehicle itself since it's an RS to have less roll and wear on turns, the Michelins we had are out Vogue will take you 60,000 with on point rotations every so miles plus theyll make your RS stand out look into the red strip

Vogue Tyre® - Custom Luxury Tires Since 1914

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Wiff Getting Stronger 3rd Radiator soon...

 

April 2022 Installed
Sometime May 2023 Replacement
Keep an eye on your Radiator Blazers
Screen shots, don’t try to press play

 

April 2022 Installed Sometime May 2023 Replacement Keep an eye on your Radiator Blazers Screen shots, don’t try to press play

I had my radiator replace @ 31k

 

I just had the outlet housing sensor replaced 6 weeks ago due to the engine light coming on and getting the steering assist reduced showing up on the dash. I started smelling antifreeze after getting it back from the dealership so I took it in this morning to have it checked out and was told the radiator is leaking at the tank seam and now needs replaced. Love this Blazer but not so sure so sure about it anymore with issues starting at 50,000 miles.

 

I had my radiator replaced 6 months ago and now my sensor is bad. I only have 40,000 miles on mine

 

They told me mine was the thermostat covered under power terrain but I was loosing rad fluid and they seemed to have no idea until the engine light finally came on

 

Mine is a 2022 with 21000 miles on it and is now at the dealer for radiator problem gm needs to get it together charging as much money as they do

 

Our 2021 Blazer has 22k on it and the radiator is leaking and thew dealership is replacing.,.... Thankfully under warranty. Not getting a warm and fuzzy from the posts here and hope the problem doesn't come back... Not happy about them taking it apart to the extent needed for this either.

 

2022 RS here. 16k miles, new radiator put in yesterday and was also bothered by the extend of the work that was done. So far so good

 

I’ve got a 2021 blazer and just out of warranty and they said it’s a maintenance issue. They want me to pay $1500 for it. I’ve been calling customer service a while now and asking for a goodwill adjustment. You need to do that as well.

 

Still own your blazer?

 

I have 2020 Blazer with 50,300 miles. Bought it used with 22,000 miles in Feb 2022, took it in to dealer for warranty work, in Nov. 2022 for something else than radiator, but they found that radiator was leaking, and replaced it under warranty. Now having the Steering assist, AC and Temp gauge pegged at C issue. Took it in to a different Chevy dealership where I live now, fixing Thermostat under powertrain warranty, but found radiator is leaking, $2,000 to replace that. Called GM and said, just had this replaced in Nov. 2022, parts have 1-year warranty. They worked with dealership and I am paying $900 for radiator. 3 radiators in 2.5 years of owing Blazer.

 

I bought a brand new 2021 chevy blazer Rs. Radiator is cracked at 50,000 miles

 

Bottom left hand side(driver) of my radiator is leaking at the seam. Start there. Don't take to dealer. Do yourself and use trusted aftermarket brands, not oe. Dealers charge 4 to 8 hours of labor. When it's a 2 hour job. They say the sensors fail. If you unplug the neg battery cable for 10 minutes, it resets electronics. You'll have to clear the codes but gm doesn't want you to know these tricks. They'll nickle and dime you. Early this year I had the same sensor throw check engine and that's what I did from experience.

 

So you replaced your radiator?

 

2022 Blazer RS-purchased brand new just at 2 years ago & just reached 30k miles- never noticed a leak in my garage, never had a sensor light come on, suv never ran hot. Recently got an oil change and was told my coolant level was really low, turns out there is a crack in the radiator . Luckily it was still covered under warranty… super disappointed, considering new options for next year. I have always been team #Chevy, but they must do better.

 

I am having the same issue, seems we could start a class action lawsuit against GM

 

Has anyone submitted a claim with receipts to GM for the radiator replacement? We had the temperature gauge replaced with 46000 miles right before the warranty went out. We now have a leak in the radiator and need it replaced. We’re at 56,000 miles and cost is not covered. I’m thinking of trying to submit receipts and see what happens.

 

I have a 19 blazer and my radiator was the same issue only about 23 to 24,000 at the time. My warranty covered it and that's save me 1,400. I've also had to replace tires. The factory one were junk and wore uneven with being AWD and or 4x4 I had to replace them all at same time so there was another 1,100 bucks I do feel the radiator should be a recall!

 

I have a 2020 blazer (bought it new) and had to get my radiator replaced, as I was having the same issue around 48,000. Took it to the dealership, because my check engine light was coming on and was told I was completely out of coolant. Did not see any signs of leaks etc. Repair cost was a little over $2,000. I also feel that this is a manufacturing part issue (perhaps pandemic part) and there should be a recall. GM should have a recall on this radiator issue!! These vehicles costs too much to be having these major issues at these low mileage.

 

By my 5th radiator I got smart. Had aftermarket put in. Much cheaper than OEM and comes with 10 year warranty instead of just one year with OEM.

 

I have a 2021 Blazer at the dealer now. Radiator replaced while under warranty 16 months later leaking again. I have never had an issue with Radiators so frequently till now. $2000. Is the cost. I am hesitant to pay to replace warranty work ... Should be a recall I bet!

 

How difficult is it to replace the radiator? I'm sure there's tight working spaces, but how much has to come off to get at the radiator?

 

The entire front end. I'm on my 5th and hopefully the last. I got smart and this time I had an aftermarket one put in.

 

2019 Blazer with 33481 miles on my second radiator.

 

2021 Blazer RS, 58k miles. In the shop now having the Thermostat replaced, for sticking. I also has similar issues that most everyone here has experienced, from the warning message, to the fan coming on, all in the same day. No issues with seeing a leak in my garage, however I did notice the fluid was below the line it needed to be, so I added. That was in December and the fluid has stayed at level. I have been on the internet researching everywhere how does this happen, what effects are from this and now I am here. I also spoke with a trusted mechanic to better understand this Thermostat issue. Thermostats are not known for going out, they seem outlast the car itself. When the thermostat is not properly working it adds extreme pressure, dangerous even. Makes sense why a radiator would have signs of leaks.

This is the 2nd major issue I have had. It makes me sad pour more money into fixes that are not the typical repairs. I'd pay for this kind of stuff if the car was paid off, but is still owe. The other major issue I had started 10/2023 with the Battery, which was what I thought when I couldn't start the car. Got a jump, took in to replace, drove home no issues. Later that night went out and warning message, C/S Battery Saver Active and Battery Charging system. Took in next morning. Turns out nuts were loose at battery junction block causing a fuse to melt due to poor connection. Results were, replacing Junction Block and Alternator. Don't which happen first the junction box or the battery replacement not connected correctly. Every since the changing of the of those three parts the Cluster board is out of whack. Millage would show, took it in, fixed. Gas light does turn on when low fuel, the gage worked, took it in, fixed. The RMP gage moves when the car starts but stops when driving, took it in, fixed. I really love the way this car looks and the drive. I hope this most recent issue is resolved in a recall.

 

Simple everyone, don't take to a dealer, do yourself and use aftermarket high quality and trust brands.

 

2021 Blazer here. Replaced radiator at 70,000 miles. I was told my radiator bracket failed which caused the leak. Now at 99,000 miles the radiator fan stuck on, coolant pegged cold but no current fluid leak. In the shop now to get thermometer replaced. Very frustrating

 

We need to band together and approach GM (General Motors) for a recall!

 

And here we are almost 1 year later and the radiator is leaking again….repaired at GM dealer last year. This is getting ridiculous, how do we want to go about starting a petition.

 

I know I have replace my radiator 2 times already at 10000and at 2100.recall recall that's what needed