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Chevy Sonic - P0599 Thermostat Heater Control Circuit High

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Electronic thermostat!?! OK then... Let's come along with Eric O. at the SMA shop as he has a look at this Chevrolet Sonic that is throwing a code P0599 "Thermostat Heater Control Circuit High"
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Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

Опубликовано:

26 авг 2024

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Комментарии : 442

@klc317 7 лет назад

As a service tech in a field other than automotive I can say that the phrase "I didn't build it, I didn't buy it, I didn't break it" applies just as well....ha!

@jonathansmith7442 6 лет назад

PLEASE NOTE: THESE CRUZE/SONIC ENGINES RUN AT 227 DEGREES. DEXCOOL 50/50 MIX BOILS AT 240 DEGREES. This is not enough margin to prevent boiling as the coolant heat soaks after shut down. I fixed my boiling problem by simply draining coolant and going with straight undiluted dexcool. Now I have boiling protection up to 28 Degrees. no more boiling at all. These cruze/sonic engines run much hotter than we are all used to, and thus require undiluted dexcool, not a 50 50 mix. These engines run this hot to meet emission standards. Thank Big Brother for this.

@FukU2222 5 лет назад

Just curious what engine you are referring to as they are offered with a few options. Wouldn't surprised me if you were talking about all of them, heh

@reweydewy 7 лет назад

I replaced one of these on a 12 chevy cruze. Had an open in the heater circuit. Only thing to be careful of and keep in mind is the little plastic pipe on the top of the housing with the quick disconnect likes to break off ass soon as you touch it. it runs from the top of the housing to the throttle body. Then you have to go back to dealer and buy the whole pipe.

@shawnrobert5392 6 лет назад

Wanted to thank you for the lengthy explaination of the codes, you saved me so much time and parts by helping me trouble shoot the easy solutions first. Thanks

@saxdogg69 7 лет назад

Confuse-us say, when you do one handed resistance measurements on a Korean part, you must hold leads like chopsticks.

@dirtyfingernailsauto8946 6 лет назад

If a man can build a better mousetrap than his neighbor , even though he lives in the woods, the world will make a beaten path to his door - Ralph Waldo Emerson.

@brandonlaielli878 7 лет назад

At the end it says if malfunction is displayed test or replace thermostat heater. Malfunction was displayed.

@schigara 4 года назад

I would not have figured this one out without you and this video. On my 2015 Sonic 1.8, I had a P0599 but I could not get the test light to light up. I went through and tested with a pigtail socket and bulb and was trying to command it with my Launch Mini ProS and it showed the same malfunction but I could not get the bulb to light which was a fairly large 921 bulb. I went to the wiring diagram and checked the ground wire from the ecm to the thermostat for resistance and then load tested it as well and it tested good. I also tested the power wire with the test light from the power side of the circuit to the negative on the battery and it was good also. Once you mentioned the resistance values, I checked the resistance of that bulb and it was 2.5ohms and the thermostat was at 1.5ohm so I replaced the 921 with a 194 mini bulb that had a resistance of about 5 ohms, the test then worked like yours in the video and the "malfunction" on the scan tool went away and ended up being just a bad thermostat as well. You tested the new oem part and it showed 15 ohms so somewhere between 2.5 and 5ohms is the limit in the ecm resistance check on that circuit. I installed a new thermostat and all is good! Thanks, Eric.

@davenstorm7271 3 месяца назад

My 2015 Sonic 1.8 is showing the P0599 code as well , has 86,000 miles no leaks from it only a check engine light should I just replace the T Stat or the whole thing with the housing as well ?

@schigara 3 месяца назад

@@davenstorm7271 Yup.

@heyitschinoable 7 лет назад

Eric this is what we deal with all day long problems like these and intermittent electrical issues at our rental car vehicle maintenance facility. Everyone thinks these new cars have zero nada zilch issues boy are they wrong. Not trying to point fingers here at any specific manufacturer but man do the "Domestic" brands fail so much. New cars right off the shipment trucks just after the PDI fail with stuff like these and other issues as well. I.E. a Dodge Journey with trans problems would shut off when put into drive.

@yhird 4 года назад

Great analysis Eric. Excellent job identifying the ECM was functioning normally. You saved the customer big bucks

@markrup6369 7 лет назад

I love waking up on Sunday morning to a fresh pot of coffee and a new SMA video!

@mattsimon931 10 месяцев назад

my daughters Chevy just popped this code yesterday, definitely using this video to troubleshoot. I have a basic BT enabled code reader, so I know it is P0599, but not much else functionality.

@michaelbouley2294 7 лет назад

I need a car from the 60's WITHOUT all that electrical / emissions shit on it

@SmittySmithsonite 7 лет назад

You and me both, brother! I should've never sold my '72 El Camino 6 years ago ...

@moneygrip4464 5 лет назад

I hear ya brother... the problem is easily fixed cars make no money....☹

@billziegmond4943 4 года назад

@@SmittySmithsonite A buddy of mine has his 66 El Camino 4 sale. Great shape.

@SmittySmithsonite 4 года назад

@@billziegmond4943 - If I only had the dough. Wifey is out of work thanks to this damn virus. Perfect timing. :( Just finished the front end this fall on our '86 Grand Marquis. Finished up the final pieces of it today (we take her off the road for the winter). Thank God I have this one! 267k miles on the original drivetrain, and fuel pump!

@billziegmond4943 4 года назад

@@SmittySmithsonite ouch on layoff. Nice on 276k though.

@baxrok2. 7 лет назад

Good stuff Eric. As always, your diagnostic approach is beyond reproach! Thanks!

@gordonfreeman5434 7 лет назад

Seen you yesterday at MechanicOC's channel, and that was fun!! Thanks for another learning resource.

@catmando4855 7 лет назад

I'm wondering why the fault description doesn't say "Current high or low." Instead of voltage high or low. The ecm's I'm affiliated with test current on outputs and voltage on inputs. For example if the voltage is high on inputs, it means you have an open circuit or shorted to +. If the current is high on outputs, it means it's shorted to ground. In this situation the description should have said current high because the component had only 1.5 ohms.

@christhackrsy 7 лет назад

Hi Eric, you can just buy the metal housing in the U.K., lot cheaper and quicker fix, common fault on z/a18xer engine,most dealers say you have to buy full housing!

@joyofwrenching Год назад

Just had to repair a cruze with p0599, tested as shown here, seemed straightforward that the heater was shorted (water in heater cavity and connector), replaced heater, no more codes. Sent home, and got a call 3 days later for same issue...ordered gm part to replace "new" aftermarket one figured it was a bad part, tested wiring again, but this time had voltage on the control wire too. Turned out it was shorting to another powered pin inside the ecm connector! Don't just parts swap, make sure the wiring is good! Hope this helps someone chasing their tail on what should be an easy fix.

@dennisgoldman7160 Год назад

think this is a thing that GM knows about and didn't bother to tell anyone ....ask the question why is the original part made of plastic wouldn't metal be better .....went to the parts store and just bought the thermostat because my original plastic one was reading 2 ohms. could not get the lower E10 bolt out because it was torqued on by a monkey and stripped ....went back to the parts store and exchanges it for the whole unit (made of metal ....my mind better then original ) installed it and got a MAF code and temp sensor low ....temp sensor read good 14.2 ohms however it was blowing the ecm 4 #23 10 amp fuse ...upon further investigation the power pin on the brand new unit was connected shorted to the case....thermostat body which in turn was grounded thru the housing ....is this why the original part was plastic because they knew this could be a manufacturing problem .....is this why the housing is plastic on the actual replacement part ? so that even if the coil is shorted to the casing by the thermostat the plastic housing would allow it to function correctly (isolate it from ground ) ...I honestly think that is the real story and GM chose a cheezy way to fix it

@daveyio87 7 лет назад

I got gm to change one of their flow charts because the way it was set up it had you replace the bcm and the problem wasn't the bcm the problem was the hood latch. Regardless the vehicle was under warranty and gm would have been eating that bcm. I use a test lamp for 2 wire circuits due to the fact that diagnostics only pay 0.3 under warranty. Also the reason why the thermostat housing is aluminum on the new one is because the plastic ones always blow apart over time!

@throttlebottle5906 7 лет назад

tax write-offs, blamed on techs, go figure!

@hytgggg 7 лет назад

Hi Eric that's a Vauxhall/Opel engine from here in the U.K those thermostats are renowned for giving up the ghost. Here we have an updated thermostat that has a plastic housing and doesn't need the whole unit. Also for bleeding on Vauxhall there is a bleed tap on top of the radiator on the right hand side, your passenger side. Keep up the good work. Jon

@bobl78 7 лет назад

I was suprised he could only get the complete unit instead of just replacing the thermostat itself.. it´s just bolted to the plastic housing by 3 bolts

@hytgggg 7 лет назад

It's the older metal thermostat in the video too, maybe that's all that is available in the U.S

@turkraja3839 7 лет назад

"money lights on" or "there is your problem lady" hahaaha. unique style by eric o.

@tonys623 7 лет назад

Eric, you should do a theory of operation segment for these new modern devices and parts.

@Gears.and.Gadgets 7 лет назад

Good video. Good information. Yes the flow charts are useless. I too wonder how many will be led astray.

@markvitler 4 года назад

Just seen this video like 3 years to late. I work for Vauxhall in the UK. We have this engine and the 1.6 variant in most of our models and we change theses thermostats every week. You can just get the front half of the thermostat on its own without all the housing on the back. Much easier and quicker. They are crap design. Anyway love the videos whilst on lockdown. Cheers Dr O.

@krugerblue 7 лет назад

1.8 is actually big. This joke of a car called Aveo in Europe, usually comes here with a 1.4 i think :)

@mikedayitt 7 лет назад

I wish you were her in bolingbrook area. I like how you kinda already know what is wrong and yea dealers themselves will throw the most expensive part in and STILL not fix the problem example was you fuel module where they were gonna thow in a fuel pump....you most wonderful diagnostic was when you replaced the fuse box because the one section where the fuse was blown was irrepairable so you swapped out a junkyard fuse box.....I guess dealer mechanics cannot use their brains to much time and have to go by the book...what will they learn? stiffing the customer and have the person start not relying on their products. Got a new 2016 ford fusion and if it starts not blowing out hot air I will definitly remember this video.(unless dimentia hits me....runs in the family) anyway love your work and brain storming

@billziegmond4943 4 года назад

Dad worked for Fisher Body 56.4 years. /i worked for them as a temp. We both always asked WTF were the engineers thinking.

@xxkrazyangelxx 5 лет назад

All vehicles have limited time on parts. I own a 2013 Chevy Sonic and this is the first major issue I’ve had in 94000 miles of owning the car. I drive big trucks for a living and even they have a limited time on certain parts. I can say for myself that this has been one of the best vehicles I’ve ever owned. I think it boils down to how you drive and maintain the vehicle. People dog their cars and expect to get 200k+ miles out of them. I actually have a 1995 Honda Civic with over 200k that still runs great to this day. People need to drive these little cars with care and do preventative maintenance if they want them to last.

@bigrockk2980 7 лет назад

Another good one, walked away feeling a little more educated once again, thanks!

@SouthMainAuto 7 лет назад

Cool thanks!

@saadal-robaee9926 7 лет назад

I have a lot of questions about the Chevrolet Sonk and Chevrolet Aveo .. I am a constant follower of your wonderful channel from Iraq .. Greetings to your beloved little daughter

@rau1367nt 7 лет назад

Eric, Did the same job on my Cruze (1.8L) and only replaced the thermostat component. Looks like you bought the thermostat and housing with valves and ports etc. Granted it was a $70.00 thermostat, however it came with a replaceable heating element and it was not sealed plastic like the original. It was a genuine GM component by AC.

@hardmack 2 года назад

For those looking for a recent comment. Just dealt with this, the seal inside the front thermostat housing (which also holds the thermostat itself) fails, allowing coolant into the void where the 30a heater circuit terminals reside, creating the short. The newest revision of the entire thermostat housing has been cast in aluminum for the 1.8l addressing most of the past issues on these older sonics; makes it way easier to replace just the thermostat housing. Another touch point for the sonic's is the engine coolant temperature sensor which is on the back of the engine coolant housing (the big heart thing lol) Daewoo was somewhat smart on these things. When mine went, the evap purge and intake air sensors went wonky as well.

@andrewthompsonuk1 7 лет назад

My 21 year old BMW has one of those. And I replaced it twice over the last 14 years. Both times it went open with some kind of coolant temperature control curve error.

@opl500 7 лет назад

GM bought out Daewoo, renamed it GM Korea. Chevy Sonic is a Daewoo car.

@carterfest 3 года назад

But mine was built right here in the US of A

@herbertmorris2848 5 лет назад

This video has been very helpful with my daughter's car. Thank you.

@coollasice4175 7 лет назад

Mrs. O's blue outfit matches all of the tool boxes.

@toddgiambruno 7 лет назад

Eric O thank you for your dog on a bone persistence and expertise! I have been watching for several weeks; viewing as many videos as possible. I hear your frustration regarding the domestic companies; hear your apparent approval with Honda and Toyota, but wondered where you stand with Kia and Hyundai. More specifically; their integrity, ease of repair, strong points and weak and overall logic of design. Thank you for your videos!!

@heyitschinoable 7 лет назад

Todd Giambruno I just know Hyundai/ Kia has good warranty as one of my old coworkers went to work for a Hyundai dealership. He hates it and wants come back. He said its nothing but a warranty shop since warranty for Hyundai/Kia is 100k miles. I would never buy one though. Dnt think they're so terrible but not the best/ up to par with Honda/Toyota

@horseshoe_nc 4 года назад

Thank you for posting this video. My sister's Cruze was giving the same code with the same engine. I will be test the resistance of that heater tonight. I've also found just the thermostat and gooseneck, with heater by Stant. In all actuality, it wouldn't surprise me if Stant makes the OE.

@JMassengill 7 лет назад

I really wanted to see what the inside of that thermostat looked like but I realize time would be a factor in doing that. Loved your video. Thanks for the video!

@snakeskinproductions7500 6 лет назад

The Dealer that I work for has sold a boatload (load being the operative word) of these, and I have run into this issue many times. Thankfully I am a common sense kind of tech so I also tested the way you did. Very glad I did or I may of started a side biz of selling perfectly good used ECM's. Thanks again Batman...lol. Salutations from down here in CT. The armpit of new England...

@jdtractorman7445 7 лет назад

So as I understand it this helps maintain steady coolant temperatures under different throttle positions? At first when I saw this I thought it actually controlled the opening/closing of the thermostat. It's all about CAFE numbers.

@steves5346 7 лет назад

this begs the question...what was gm thinking when they complicated a thermostat???

@Ilikeryche 3 года назад

It's all about emissions, and rediculous government regulations to keep the climate alarmists happy.

@moneymac2864 7 лет назад

I've said it before and I'll say it again...Eric O for president.

@estebanamador1990 4 года назад

Thank you man!!!! I was looking for the resistance of the heater. Great video and info, thanks again.

@dandolan3946 3 года назад

Good Video. I do want to say that they sell just the thermostat and its much simpler to change. One hose and 4 bolts.

@drakehiltermann9918 7 лет назад

good info to know before i go into the dealer and they try to sell me on a new ecm. thank you

@cgillyard 5 лет назад

LOL Mrs. O has that magic touch! @9:07

@omarmartinez715 Год назад

nice just from 15 to 3 ohms that's a big difference, I did notice that is the motor is making the same sound like mine, so I guess is normal the person who sold me my chevy sonic told me the same, but when I run the test it shows me the EVA system high purge flow which is suggesting to replaced the canister purge, even when i took it to firestone they told me the same, so i will try and see. Thanks for all that info

@scottfirman 7 лет назад

I really miss the old days.

@alexw288 7 лет назад

This will help me a lot since I'm a new tech. Thanks Eric

@ITS4390 5 лет назад

You just saved me a lot of trouble. I have a 12' Sonic 1.8L code P0599 going off. Checked ohms across heat element ...... 4.... Balls

@nickparker3188 4 года назад

Thanks for the video man. I would have followed the flow chart lol and made a mistake...

@roscoesomeone9764 7 лет назад

Interesting how the auto makers are using all the sensor inputs and onboard computers to make a car more efficient. Might as well, it's like getting a free tun up every time you drive and having an engineer as a co-pilot constantly adjusting things for more efficiency and less pollution as you drive along..... when it works like it should. Eric does great explaining things I didn't know existed. I doubt I ever get a newer car but if I do this is something I didn't know about. The world is getting crowded and little things like this help us all get through another day. I don't miss the good old days when you had to pump the gas pedal to get the car to start and keep pumping until the car finally warmed up or clearing a flooded engine. Kids nowdays don't know what they missed.

@Sandbag1300 7 лет назад

@ 0:07. Took the opportunity to send you a new green Jeep hat seemingly identical to the one you always wear. Should be there in a few weeks. Traveling over the big ocean. :-)

@BobbyW00 7 лет назад

Eric needs to do a Mail Call movie while eating his lunch behind the counter with Mrs. O..

@joshuascholar3220 2 года назад

Mine just threw the code and measures 1 ohms, so I know what I'm replacing. Thank you!

@rocknrod01 5 лет назад

Hey Mr O. I had a problem with my chevy sonic. It gave a po138 code it had to do with the thermostat. Thank you for your help. I knew what to look at thanks to this video.

@rhkips 7 лет назад

There's a bit of an issue with your interpretation of the flowchart, Eric! It states the initial testing between Terminal 2 and ground is with the ignition OFF. If the test light illuminates, test between Terminal 2 and Terminal 1. The ignition is still OFF at this point, so there would be no control; the test light would not light. No PCM replacement. ;) I hate factory flowcharts. They're often very convoluted, and it's easy to miss little details like that. It's so much easier to just understand circuit function and test the bloody thing properly! Also noteworthy, the Chevy Sonic is a Daewoo something-or-other, hence all the weird non-GM, Korean-made parts. :)

@rottmanthan 2 года назад

the parts are from where ever but those sonics are assembled in Orion Township, Michigan.

@mk3ferret 4 года назад

Thanks mate Saved me a few min which is priceless to me nowadays

@kaysnodgrass6759 6 лет назад

I have a 13 sonic I’m on my 7th thermostat in 2 yrs. every time the o ring is bad... any ideas??

@glenohara6563 7 лет назад

I bet that (low resistance) is due to coolant ingress, is it just me? Or has any one else noticed where there is rubber seals and coolant involved there will be leaks. Water pumps, o rings , etc.....

@guccimane9975 5 лет назад

Aftermarket plastic water inlets crack every time a clamp touches them.

@douggerber83 7 лет назад

the light went out because Mrs.O outshines everything..

@pv2xeek 7 лет назад

Congrats. You win the "Most cringe-worthy SMA comment" award.

@combatjm89 7 лет назад

Sometimes doing something different can be the definition of insanity... I think this $176 "smart" thermostat doodad qualifies!

@overboostn 7 лет назад

I'm pretty sure the Cruze is a Daewoo design that GM uses since they bought them out, hence the Korean parts.

@grantdubridge7995 6 месяцев назад

They say that 15 ohms is the standard for the coolant temperature sensor at cold engine temperatures. The question is, does the resistance change when it's hot.

@noelhernandez5829 7 лет назад

This DTC is common issue with this Sonic and Cruze vehicle with the 1.8l. If it has a plastic oulet where the thermostat lives its most likely the heater is bad. Theres a new design for this part and body of the part is aluminum. Its always good to diagnose first to make sure there no issue with wiring or ecm.

@ramdodgetruck1177 7 лет назад

Eric, you didn't say if the coolant was low when you removed it. (or I didn't hear it) Seems that not being in coolant could be a cause of failure.

@wilson713 7 лет назад

That part looks fairly similar to the water pump/thermostat/coolant temp sensor on Audi's 2.0 TFSI engine. Hopefully they're more reliable. I've put water pumps on the 2.0 TFSI at 5k miles.

@mechanicmike1236 7 лет назад

great video as always! Thanks for the all the time you spend making videos!!

@robielena9798 2 года назад

This is the only video I’ve seen that really explained this issue on a Chevy sonic. I have had this issue for over a year and a half. The mechanic I brought it to was recommended to me by a coworker. The guy is a hacker. Changed the water pump the thermostat and thermostat housing. After 1200$ the code still comes on he’s been trying to figure this out for a year and a half.

@flmeade 4 года назад

Can i just disconnect the heater control wire and live without it?

@AntonioClaudioMichael 2 года назад

Good diag with a simple test light Eric O definitely looks like a Bad Thermostat being 1.5 ohms too low on-resistance super high amp and Current @SouthMainAutoRepairLLC

@MotswalaSA 5 месяцев назад

Hi my chev spark always says thermostat heater circuit open,and engine light came on.Bought a new thermostat but after 8 months same problem came up again.Please advice

@haywardsautomotive6156 7 лет назад

Mitchell has the same flow chart and almost every time I read them I wonder how many people actually follow that crap. They really need to redesign their flow charts to loaded circuits, voltage drop testing, etc. What they really needed to add was if you have high voltage perform resistance checks and here are the ohm limits or what amperage or voltage you should have on the control side...all we need is good info especially for what we pay for every month. Anyways great video as usual and repair.

@Paul1958R 7 лет назад

So based on the comments from this video the engine is a: Opel/Vauxhaul from UK Chevy from Tonawanda NY Daihatsu from S. Korea LOL Well it is definately not from Tonawanda: media.gm.com/media/us/en/gm/company_info/facilities/powertrain/tonawanda.html This says it can come from Hungary, Brazil, Mexico, or China: en.wikipedia.org/wiki/GM_Family_1_engine#DCVCP Baseball, hotdogs, applepie...

@dylankinch2735 7 лет назад

whats up eric. great way to start a sunday. a little sma in the morning. have a good day buddy

@johnsamuelson3234 7 лет назад

Anyone out there in RU-vid land know of a excellent honest guy like Eric O and a shop like SMA in the South Jersey area particularly Atlantic county?

@mrsicivicdude 7 лет назад

Was that a "Room" reference? I did NAAATTTT!

@terrystoner4504 5 лет назад

Just replaced a bad HVAC fan resistor in my 05 Chevy pickup, old one from the factory was made in Slovenia, so yeah domestic.

@ronaldderooij1774 5 лет назад

So what? International trade is beneficial for both sides. And it shows that your country is capable of earning money without producing all the nitty gritty stuff and concentrate on knowledge based engineering (like complete cars). I think that is a healthy situation for the USA. Autarkism never in history brought wealth to anyone.

@rrmech11 7 лет назад

Great job of explaining as usual Eric O

@theoldwizard998 7 лет назад

Over $100 for a whole assembly because a $5 heater failed. Probably saved a couple of bucks by not having a screw in part.

@JPilot2 7 лет назад

G'day, Eric O! Love to hear an update, on how your wonderful 2004 Honda Civic Coupe' 1.7 17DA2, is progressing along!! Thank you very much! Cheers! :-)

@billyg7281 7 лет назад

Off topic, but what type of lift do you use? Could you do a video teaching us about them? Never used one, looking to get one, and want to be educated. Thanks!

@mehrdads1063 4 года назад

When I put the thermostat in hot water and measure the sensor resistance, there is not different with room temperature!! Its still around the 15.2!! Do you think the sensor has still problem? I recently replaced thermostat housing. I dont have any error code , only my low and medium fan speed when temperature reach to 225 f, doesn't work and my car overheats. When I disconnect the sensor, fan works high speed.

@lucianosoldi6519 6 лет назад

Good video...its unbelievable that the procedure never told you to change the thermostat first...uhh!

@clarenceswope6706 Месяц назад

Did you have to put epoxy on the gasket or not

@TheRealSh1zz4m 3 года назад

looks like im jamming a test light in mine to pass inspection! THANKS

@TheToadkicker 7 лет назад

I have the Verus Pro also. Out of all the other scanners you use which one would you recommend to cover the stuff the Verus does not do. We also have an old Autel that seems to do pretty good

@tunazfishing4754 5 лет назад

will the car fail emissions for this with the MIL light on

@JulioGonzalez-db3mc 4 года назад

What was the part that he replaced called?

@fernandgeenevan8773 7 лет назад

I did hope that you had come up with one of your unbelievable car shop hacks, yesterday! ;-)

@UpStuff 7 лет назад

For poop and laughter, what would the ECM cost for someone to find out that the ECM wasn't even bad on that hot rod? Keep the vids coming brother!

@murariufamily 7 лет назад

www.amazon.com/ACDelco-12642927-Original-Equipment-Assembly/dp/B007Q1476O Amazon says about 100 bucks. but then you have to have the right tools to tell the car you didnt steal it...so a bunch of labor probably...and the part I looked up is probably used...or stolen LOL here is the same part on GM partsdirect....www.gmpartsdirect.com/oe-gm/12642927 I have ordered from them before but it takes weeks to get your parts delivered.

@Eastahtata 7 лет назад

Holy cow that is the cheapest oem ECU I've ever seen.

@murariufamily 7 лет назад

I know right? I couldnt believe it either..but thats what it lists...maybe they change a lot of them?

@FukU2222 5 лет назад

It's the modern Chevy cavalier. These things are produced in the millions.

@HUBBABUBBADOOPYDOOP 7 лет назад

*@**26:06* We said the same thing about heated O2 sensors, remember?

@BubbaButt7 3 года назад

So if its all one part then if you get a p0599 its replace that thermostat assembly or god forbid the ecm?

@robertbrockwell9568 7 лет назад

We replace loads of these here in the U.K. On Vauxhalls one more problem that doesn't need to exist

@kyhomegarage3430 7 лет назад

Great job as always. Your diagnostic approach is top notch. Thank you.

@phatcowboy76 7 лет назад

It seems to me the instructions only tell you to replace the K20 ECM when an upstream test reveals there is an internal short to ground inside the ECM or there is no voltage coming from the ECM. There is a spot where the instructions say "test or replace the E41 engine coolant thermostat heater". This is the section where the fault has not been determined to be in the K20 ECM or the wiring in between the K20 and the E41 but downstream somewhere. In the thermostat pigtail or connector or the heater inside the thermostat. I could be wrong but that is how it seems to me.

@uggadugga8070 7 лет назад

That part is $78 at Amazon. I would've waited a couple of days assuming there were no driveability issues... my .02

@heyitschinoable 7 лет назад

KC inMN not always the best, plus what if it got damaged or had issues then y

@heyitschinoable 7 лет назад

Then you gotta wait longer to replace etc even with prime membership it would still be a hassle

@heyitschinoable 7 лет назад

Then you gotta wait longer to replace etc even with prime membership it would still be a hassle

@uggadugga8070 7 лет назад

I guess it's just the "cheapskate" in me coming out! LOL.....

@heyitschinoable 7 лет назад

KC inMN lol its all good

@nicke2307 7 лет назад

my guess is the way the ecm detects the condition is by using bias voltage

@nicke2307 7 лет назад

that would explain why the test light should not light

@weaponheadz4970 7 лет назад

hi eric. ive just replaced the same part on a uk spec Vauxhall Vectra sri. I only got the metal part with the thermostat and sensor from dealer £60. the plastic part was sold seperatly or bundled with discount.