In this video I bring you along as I fix a customers 2005 Buick LeSabre that has a customer complaint of no heat. He didn't complain about the dash shaking with the blower on high but I take care of that too.
-Enjoy!
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South Main Auto Repair
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Avoca, NY 14809
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Well I thought just getting a little chilly temperatures up here in New York in the single digits low teens And of course we're getting a lot of snow tires for one and heater complaints. So we've got an O5 Buick here that's got the big three eight uh, little to no heat and well, his snow tires are fine, but his complaint is a little no heat. So we're going to do our typical thermostat. He requested the global Universal mix on models antifreeze and flush heater core.

plus I Noticed when I test drove it that the blower motor is terrible. It shakes like crazy. Must have some stuff in it so we'll clean the leaves out of that. and I get the heater core flushed out.

Throw a thermostat and it should be good to go. Apparently when he bought this car he got the head that that's cool technology his brother told him or something so he filled it up with this Global antifreeze. so he just requested that I put that back in it. So typically I don't use uh anything Universal You know, as far as fluids go.

But first thing first, we're gonna be under here making a little bit of a mess. We don't want to get antifreeze all over his belt because it'll make him squawk like crazy, so we're just gonna avoid that little Miss hap by taking the belt off I Just marked the direction on it so we put it back the way it was at least a correct side facing out. Make sure you draw yourself a little night. Grandma How that sucker goes if you don't have one, let's do a couple cookie sheets underneath there some bacon pans.

I'm gonna pop this little radiated hose off here I Don't know where the petcock is on the radiator I Don't see it right away. so I'm just going to unhook the radiator hose, move the clamp off of it, can hold that thing a little better. There we go. I Just slid it up onto the Inlet here for the water pump and I'm just going to pull the hose off.

Looks like there's still quite a bit identical in it. that looks pretty. Orange Let me make sure we're somewhat hitting our bucket. here we are: I think 90 of it.

That's pretty good. I'm just going to lower this hose down. Gravity can do its thing. take the lid off the radiator.

foreign there too when we're all done. I Just want to give this the best chance. I Had to drain most of it out of there. Uh, let's see our heater core.

As far as flushing it, we're probably going to do it right here at these hoses would be our best bet. I Think yeah, this has already had the aluminum elbows put in the intake, so that's good. That's a major leak point on these. Um, let's take and pop our thermostat out of there first.

leave the hose hooked right to it. I'm gonna grab a bigger onion nugget. Oh, that's just a little 20 volt job or 12 volt. Rather, they're not very powerful whatsoever.

There's that. So that's all you got to do. And do the thermostat on a 3 8. let's get something to pull that out of here with.

That light's good now. she's draining moist so there's that. So pretty easy to do. Leave that out for a minute.
Girl goes down. Uh, let's take a get the heater hoses unhooked. Those are pretty easy. Also, they're right behind the alternator.

We're just gonna Slide the clamps up off of them. Maybe There's that one. I'm getting spun around. We're gonna get a hold of it.

Oh you stick pot, there's that. Might get a host pick so we don't ruin them. Let's see if we can't get a host pick. Underneath Him Okay, so there's one.

Let me get a longer hose pick here. We'll reach in from this direction. Can't start wiggling underneath it there. It's gotta break that seal.

There you go. That should be good. And there we are. Yes, sir.

time to bust out the flush gun. All right, we're gonna blast that heater core out the best set we can I'm gonna make a little bit of a mess. We're gonna go One Direction And then the other. We want to stick this down.

Yeah, close here. Hopefully where it isn't gonna blast us, we're gonna blow the air out of it. Or blow the cool out of it that's currently in it. Foreign agitating it with water and air.

I'm gonna have to hang on to that fella. Foreign. Foreign should be good. You can definitely tell when you start going through it now.

once you've gone both ways. it doesn't melt near as much pressure going going back, so we definitely remove some restrictions. Sure now I've got the water. well.

100 percent. All right. Come on. pool of water out of there.

We should be good to go now folks. let's clean up our mess. Make sure if you're doing that, if you're using one of those, turn your air pressure down. They run about 30 PSI of air pressure which is probably still a little too much.

Same thing with the garden hose, you know I run that at a pretty low volume. Thank you. Let me get a rag here. we'll Bowl the rest of that corn out of black.

We hitting it? Oh yeah, we're hitting it. We're good there. We should be good. Now we've got most of the antifreeze out that we can get out.

Clean off the up here on the thermostat housing I Better get a scraper for that that has a little bit of corrosion on it. Foreign yet I Like to fill them up with coolant right till they hit the thermostat. Saves a lot of bleeding on these. Let's empty out the Overflow jug.

We can hook these back up where they belongs. Hey, it's that guy right there. that one right there. We'll get the clamps out.

I'm gonna get the vacuum. Uh oh sucky dude that will clean that out. Oh, that looks a little sludgy to get some sludge in the bottom. I Want to make sure the line coming from the radiator over it's not plugged up? Well, it doesn't appear to be.

We'll give that one more here. that should be good to go. Now let's add some gritty stuff in the bottom. Nothing worse than Deck's Cool is that's cool when you mix it with something that's real bad foreign that we've got the lower hose off here.
I think I'm gonna take in the pinch off this upper hose. We're just going to blast out the radiator just to be on the safe side. The chat out from a pair of Hose pitch players. stick down here just in case and then we'll go right here in the radiator neck.

just kind of agitate that. Make sure there's no junk sitting in the bottom of the radiator. Foreign. Foreign looks nice on that side.

I'm wondering though, we probably should blow it from this hose here and try to blow it to the cores a little bit. Radiator is almost impossible to flush, but if there's junk sitting in the bottom, that's kind of all we were after. Uh, let's pop that hose. I Was probably getting crowded around here anyways.

Drew's Patrol Foreign doesn't feel that bad. Usually these are super corroded so let's see radiator caps back on it. You don't want to do that. You have a nice little fountain, so stick this on the hose here.

Remember Full beans, Thank you Foreign. Virtually no heat when it came in, so it should be a lot better than it was. I'm gonna blow my water back off here. We'll start putting this thing together.

We're gonna fill it up with the global coolant. so this is just uh Universal all makes all models. This was at customer request Josh please. So I fill them right at the intake.

so make sure you put your lower hose on your heater, hoses are back on and then just fill it till it hits the bottom of the thermostat. The thermostat we bought does have a jiggle pin, but this takes takes all the guesswork out of it. You know, do you have any air in the system and you know, is it coming through the jiggle pin and and whatnot? Let's wake this up real quick. So this way here you know the Block's full.

It's filled right up to the thermostat and you don't have to worry about it foreign. You can do this alternatively too through the radiator and leave the thermostat out and just you know, fill it till this gets full. which we might, uh we might do. It just takes a while I just got wait for it to kind of all bleed down and just keep going until it achieves its levelness I guess or the level you're looking for.

we're getting close I heard it gerbil there a little bit so I'm coming through the radiator. Oh there she is boys got it right up to the edge. so that's about one and a half gallons ish. almost again, a little over a gallon and a half probably.

So we're gonna take our thermostat. Like I said, it does have a jiggle pit in it which allows the air to come out and put our o-ring around our thermostat here flat side up, tapered side down. Snip that baby right there in it. All right.

Grab the torque wrench one clickety clack. It's a torque spec, but this radiator hose back on it. slip our clamp back down, make sure you line your clamp up Casey takes it to the car show you don't want points deducted for improperly aligned clamp I Forgot which way it went. Must have been done here.
Now they'll just have to lose points I guess and we'll finish filling it up, grabbing eight, put that down and then go grab your seven, crack the bleeder loose here and then we'll continue to fill it. We're just about out of coolant here I Bought two gallons for it, so we're gonna let this continue to kind of bleed out on its own. like I say we know we're at the thermostat level so we're not worried about uh, you know, locking up for the bear or anything like that. These builts typically don't have issues bleeding.

Anyways, in my experience, before we do that, we do need to see what's in this blower motor. This one does not have the cabin air filter so we can look directly into the blower motor. Kind of because that thing was vibrating like crazy. Let me get a mirror.

It doesn't take much to make these things vibrate folks. Oh yeah, he's got a few little I don't know if you guys can see that in the mirror now, but it definitely has some leaves and junk in there. Sometimes they get sucked through and they just blow out the dash, build a snake a vacuum down in there or not. we'll give it a try I think we can do it? All came up so you can just reach it I couldn't reach him with the long nozzle on there.

but you know, just a small in the shop vacuum. spin the blower right around, sucked all the junk out of it. can I Take: oh it's a 3.8 contact. Foreign, foreign, all right.

Well purchase all the air out like I say filling it up to where it hits the thermostat fine. You just burp it a couple times here. at the top of the thermostat takes about. Well, this one took two gallons.

Right out of The money and then as you increase the RPMs you'll draw the reservoir down and then any air want to off the top. it kind of burps back up through and then you'll see where it was. Just an exchange of liquid and then all the air is out of it. You're good to go, so we're gonna let it warm up.

Take it for a rip, see if he has any heat on the inside. Now we'll be getting there as far as warmed up. I Don't know if thermostat's opened yet or not. Probably not.

it hasn't been that long. yo. let's see. Oh it's warmer in here.

this is getting up there well. I Gotta move the seat I can't fit Rule number one: Never move the seat. but I already broke rule number two. Before that I rolled the window down a little and on an older GM never touch that window or Ford or Chrysler or anything.

really. All right. let's see, we're gonna get her warmed up. Let's stick those babies sleepover or we're at bucking a quarter right now.

125 cooling time. Still got a little ways to go in the gauge I Just got in the center event. Oh let's make sure it doesn't Oh way better. So before this thing, if it sounded like the dashboard is getting ready to shake out of it or you guys I can't see because of the glare.
it's chilly I would say too, you guys yeah, you guys can't see it. So about 155, she's up to full temp. it's heading back to the shop. Oh my thermostat thing ain't turned on my thermometer? Yeah! I want 54.

So it kind of fluctuates between 155 160 when the thermostat's ready to open uncomfortably warm. We'll say uh, he's gonna love it halfway more than anything I think that thing was vibrating so bad it was, it was a match. Besides having no heat or some matches, all right folks, that's it for the Buick We got good heat coming out of the dash and uh, you know, got all the junk out of his radiator. not a heater core now I Know some people give me gripes, you know saying I give mechanics a bad name because we're in business to change heater of course, not flush them out and I 100 agree.

changing a heater core is way more profitable than you know. The half hour takes a blast one out at least in this case because we're already doing some other stuff, so it was easy. However, I give the customers the benefit of the doubt a I don't like changing here of course and B you know this flush job might Outlast the customer in some cases or the car in other cases in the Prny carbs don't last very long and if we can flush it and a guy gets a couple more years out of it, most of them are rotted in half or some cases of old Buick drivers. Well, you know things happen folks so that's how I do that now I won't flush them year after year after year because there comes a point where all right customer, we've been nursing this thing and you're getting no heat and we're getting very little Improvement by flushing it out.

So at that point in time put a heater core in it and there's some cases where I don't I mean I'll try to flush them but it's a one-time deal only like Chryslers forget about it. you know you can do it. A little bit of success, but usually they're plugged right back up almost immediately so those there's certain ones I have a tendency to say no, we just need to put a heater core in it just from experience. So the thing I know from experience is that you guys like going in that comment section.

You like leaving the questions, the comments, you'll find us on it and see the Facebook your subscribe button pushing bell ring and Son of a guns. So go down there. do that. Just remember viewers.

If I can do it, you can do it. Thanks for watching foreign.

99 thoughts on “Buick lesabre: no heat a vibrating dash”
  1. Avataaar/Circle Created with python_avatars Stihl MS461 says:

    Things happen?!?! LMAO!!!

  2. Avataaar/Circle Created with python_avatars Beñito says:

    Heatercore video needed!

  3. Avataaar/Circle Created with python_avatars Space Kissingher says:

    That tool is probably better then me using a small hose trash pump to run evaporust through the system for week.

  4. Avataaar/Circle Created with python_avatars Jason Thang says:

    Flushing out the crusty old dexcool this fix will last.

  5. Avataaar/Circle Created with python_avatars ksmith says:

    I guess the old 180 degree thermostats are no longer used.

  6. Avataaar/Circle Created with python_avatars K S says:

    alot of people dumped the dex-cool out of the 3800 series engines because the dex-cool would eat through the gasket for the intake manifold and if you're stuck in the middle of upstate Montana your roadside gas station probably doesn't stock dex-cool and dex-cool and con green can't be mixed

  7. Avataaar/Circle Created with python_avatars oned4metwo says:

    That was super helpful as I have a '99 Riviera. Now, how do you get the passenger door open? LOL

  8. Avataaar/Circle Created with python_avatars ` says:

    HEY! It's that guy! Thanks for that. Always a good time hearing it.

  9. Avataaar/Circle Created with python_avatars geofjones9 says:

    Didn't see you flush out the engine with water & air- both directions. As long as your flushing, Make sure you get the whole load! Otherwise very thorough.

  10. Avataaar/Circle Created with python_avatars Randall Riggs says:

    Thanks Eric for all that you do. I didnt know the tricks of flushing the radiator,but thank you. Thanks for taking care of the customer,and you always do a good job!

  11. Avataaar/Circle Created with python_avatars Wayman Simmang says:

    Thanks. For being honest

  12. Avataaar/Circle Created with python_avatars chipset 5280 says:

    I have a shameful confession: I want to blow out a heater core to see if crud comes out. LOL Alas, I'm just a computer geek and not allowed under the hood for any reason. 😑
    That said, Eric, I absolutely LOVE your channel and enjoy watching a professional do his thing.

  13. Avataaar/Circle Created with python_avatars Peet Ky says:

    good content

  14. Avataaar/Circle Created with python_avatars Gbigdog84 says:

    Was wondering if you ever use airlift coolant tool? Whats your opinion on it good or bad

  15. Avataaar/Circle Created with python_avatars Pontificus Vascillious says:

    i'm sure this is similar to what Jiffy Lube offers for it's 'coolant flush' …🤨

  16. Avataaar/Circle Created with python_avatars gazza RP says:

    Hiya S.M.A.R super cool video with loads learnt so please keep them coming GL&HF coming from Dulwich London England(✌peace✌)

  17. Avataaar/Circle Created with python_avatars Brandon Kahuna says:

    Happy New year

  18. Avataaar/Circle Created with python_avatars Alan Roy says:

    What is wrong with dexicool just curious thanks

  19. Avataaar/Circle Created with python_avatars DDD says:

    He will be back just because of your honesty, that is money in the bank baby !

  20. Avataaar/Circle Created with python_avatars Beezlebub says:

    The question, the comment, it’s got the big THREE EIGHT, she’s got the windshield, the hob in the knob. She’s a runner folks 🤷‍♂️
    Question, what does PRNY stand for Mr. O.? I’ve tried lookin it up but it’s been buggin a fella for months

  21. Avataaar/Circle Created with python_avatars Henry Bucki says:

    love your down to earth way of talking to us. even though you are a yankee

  22. Avataaar/Circle Created with python_avatars Robert Shannon says:

    Great job on the coolant and changing out the thermostat. Remember if we can’t do it you can ! Lol 😂

  23. Avataaar/Circle Created with python_avatars 44R0Ndin says:

    Appreciate the approach on the why you flush a heater core vs why you replace it, especially when it's a Buick.
    Buick just can't shake the "old people's car" label, no matter how much they spend on fancy commercials with young people having fun in them and people amazed that it's a Buick.
    And with that, comes the need to think of how long your repair job has to last, and how much the person can afford to put into a fix.
    Lots of these older people are on fixed incomes after all, they can't just drop… usually around $1000 on a heater core replacement after you include labor costs.
    So being able to get this thing working again with just a heater core flush and cleaning out the squirrel cage blower wheel is a gigantic savings for the customer, and if something else more major goes wrong with the vehicle, chances are they'll remember you saved them money in the past and come to you for help.
    One of those "earn less now to earn more later" kind of things, if you get what I'm trying to say. If you don't hit the customer with a sticker shock every time they visit you, they'll probably bring it to you for more minor stuff more often.
    Stop thinking of the up-sell, and think of the future-sell instead.

  24. Avataaar/Circle Created with python_avatars MrOnemanop says:

    I miss my '95 Buick Ultra supercharged. Almost as much as my mechanic does…..

  25. Avataaar/Circle Created with python_avatars paulparoma says:

    GM did a great job designing the engine bay on these cars. Everything is logically laid out and within easy reach. Nothing like the overstuffed engine bays on modern cars.

  26. Avataaar/Circle Created with python_avatars David Robins says:

    I thought I heard something about the age of Buick drivers in there somewhere. I laughed right out loud. (Oh, it's LOL now for those younger people.)

  27. Avataaar/Circle Created with python_avatars Mark Evans says:

    27 years as a mechanic and I gotta say those 3.8 L motors are the best most reliable engines GM ever made! Lots of power also!

  28. Avataaar/Circle Created with python_avatars Jeffry Blackmon says:

    50+ years ago I worked in a radiator shop, removing/installing radiators and heater cores. Now and then we'd get a car that needed an engine flush. They were amazing as the water would come out completely black. After several blasts it looked much clearer.

  29. Avataaar/Circle Created with python_avatars Nuggets MT07 says:

    A wet and dry vac works well to pull old coolant out of the block .etc

  30. Avataaar/Circle Created with python_avatars Matteo Pasqualetto says:

    Aren't you going over a little overboard just the flesh out of heater core a job that probably cost $60 is costing the guy by 400 now

  31. Avataaar/Circle Created with python_avatars 1320Jay says:

    What is this…Vice Grip Garage??

  32. Avataaar/Circle Created with python_avatars Know One says:

    Great job on old iron….LOL

  33. Avataaar/Circle Created with python_avatars Neil says:

    Great Job and great video! I like that you treat your customers cars as if they are your own. If a flush works and…If it ain't broke, don't fix it!

  34. Avataaar/Circle Created with python_avatars Eric Muller says:

    where do you get that flushing gun thinghy?

  35. Avataaar/Circle Created with python_avatars Steve Banda says:

    You do not have a vacuum coolant refiller?

  36. Avataaar/Circle Created with python_avatars Troy Belding says:

    I've always done my coolant flushes by:

    Pop the upper radiator hose, run it to a bucket.
    Drain the radiator itself to a pan, cork it.
    Drain the overflow tank.
    Fill radiator with distilled water.
    Open heater fully.
    Run engine until the thermostatic relief valve (what they keep calling a 'thermostat') opens.
    Keep adding distilled water until the water into the bucket runs clear.
    Cut off engine.
    Drain radiator and cork, add coolant concentrate until you hit the 50/50 point for the car. If you can't add enough, start the engine, drain out a bit more distilled until you have concentrate right.
    Reconnect all hoses.
    Fill overflow with 50/50.
    Start engine.
    Keep adding 50/50 to radiator as it refills the upper hose. It doesn't have to be perfect. As long as it's at least 40% coolant, you're good. If you hit 60% coolant, you're still okay. You can do a drain and fill after a year with 50/50 mix. If you keep up with drain and fills, you'll keep your fluid fresh.

    Caveat: Some systems now are built where you HAVE to use a machine to drain and fill. (Ford trucks). Others, like the Mazda 5, have the drain hose _partway down the side of the radiator_. You'll need to cork that so that what you pour into the radiator cap doesn't come straight out. (if you have a new hose you're going to install anyway, just cut the hose in the middle, one side to pinch off, the other to be connected to go to the bucket)

    You will go through a lot of distilled water, but it's not like you're going to do this monthly, or even yearly. This should be an every three years type thing.

    You can do the flush with distilled and premix. Do the same thing as the distilled, except keep pouring in the premix until the water coming out isn't clear. (Or you can use the premix in place of the distilled water, but that's a bit more expensive than using distilled to make sure everything flushes out clear)

  37. Avataaar/Circle Created with python_avatars uglysteve1 says:

    Question: Do you get more credit if I let the advertisements run completely ? Because I can watch them for a good cause. Steve

  38. Avataaar/Circle Created with python_avatars adam0U812 Davies says:

    Wondering if anyone else puts dielectric grease on hose's to prevent them sticking to the housing on the thermostat and other nipples ?

  39. Avataaar/Circle Created with python_avatars Problem Solved says:

    Eric, you da man!! Love your videos. You’re so honest and tell it like it is.

  40. Avataaar/Circle Created with python_avatars fire surfer says:

    I need to flush my house. I have to wait until springtime. $2200 later, It's good enough for now. The plumber got the heat up to 69.

  41. Avataaar/Circle Created with python_avatars Kevin Barton says:

    i like how you look out for the customer and not try to rip people off. love your channel

  42. Avataaar/Circle Created with python_avatars Andrew Marshall says:

    Could you do a drawing of the engine cooling system on where the water and airflow goes and are there. Any internal parts that could be at risk if not done properly? Andy Uk

  43. Avataaar/Circle Created with python_avatars Jason Halverson says:

    flushing is good, it's those mechanics that automatically jump to replacing everything instead of fixing it that give everyone a bad name and make people think mechanics are just out to make money off you and cheat you. glad there are honest ones still around

  44. Avataaar/Circle Created with python_avatars William Albright says:

    Awesome job sir

  45. Avataaar/Circle Created with python_avatars Mars Patterson says:

    It would be interesting to see what comes out when flushing. Also, it seems likely, I'd think, that the issue is either thermostat or heater core, not both. Doesn't seem like much trouble shooting required to determine which. Or am I missing something?