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"
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the S.M.A. "A-Store" and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using "Patreon" to help support us. The videos take real time to create and pull us away from real work that pays our bills. CLICK HERE: https://www.patreon.com/user?u=5031451
THANKS A MILLION!!
--Eric O.
WANT AN "SMA" STICKER OF YOUR OWN!?!
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
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.
Interested in stuff seen in the videos or the tools and toys Eric O. likes and uses? Check out the S.M.A. "A-Store" and help support the channel! : http://astore.amazon.com/httpswwwy0837-20
If an SMA Video has helped you out please consider giving using "Patreon" to help support us. The videos take real time to create and pull us away from real work that pays our bills. CLICK HERE: https://www.patreon.com/user?u=5031451
THANKS A MILLION!!
--Eric O.
WANT AN "SMA" STICKER OF YOUR OWN!?!
Simply send and E-mail to SMAstickers @outlook.com including: your shipping address and e-mail address in the text, I in turn will send you a paypal invoice for $5 each USA or $6 each international. Let me know how many you want and as soon as the paypal invoice is paid I will ship them out ASAP! Thanks for your support of our channel!!
--Eric & Vanessa O.
Feel like sending some swag to SMA because you love the videos but don't know where to send it?
Just ship it here:
South Main Auto Repair
47 S. Main St
PO Box 471
Avoca, NY 14809
Disclaimer:
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.
Just to let you know, I owned a Chevy Trax that had the same problem in Canada cost me 600.00 to fix got rid of gms junk
The part you need is $12.95, but it comes welded to a part that is $183.16. 🤣
Mine just threw the code and measures 1 ohms, so I know what I'm replacing. Thank you!
I already made my first sonic same trouble code
For those looking for a recent comment. Just dealt with this, the seal inside the front thermostat housing (which also holds the thermostat itself) fails, allowing coolant into the void where the 30a heater circuit terminals reside, creating the short. The newest revision of the entire thermostat housing has been cast in aluminum for the 1.8l addressing most of the past issues on these older sonics; makes it way easier to replace just the thermostat housing. Another touch point for the sonic's is the engine coolant temperature sensor which is on the back of the engine coolant housing (the big heart thing lol) Daewoo was somewhat smart on these things. When mine went, the evap purge and intake air sensors went wonky as well.
This is the only video I’ve seen that really explained this issue on a Chevy sonic. I have had this issue for over a year and a half. The mechanic I brought it to was recommended to me by a coworker. The guy is a hacker. Changed the water pump the thermostat and thermostat housing. After 1200$ the code still comes on he’s been trying to figure this out for a year and a half.
the parts are from where ever but those sonics are assembled in Orion Township, Michigan.
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
From peru 👍🏽👍🏽👍🏽
Great video, I was thinking of changing mine due to code P0599 (heater control circuit high) but after watching your video I’m wondering if I could fix that by simply replacing the heating element since it comes off by removing that retainer clip. The housing itself is intact and not leaking coolant, so why should I change the whole assembly. Correct me if I’m wrong. Do you think I can fix my code by replacing the heating element?
looks like im jamming a test light in mine to pass inspection! THANKS
great video
If you are going to shut the camera off every time you change your part I don’t think I want to watch your shows goodbye.
Those sonics are the worst things in the world….
I have the same code on my 2014 Chevy Cruze manual .how do I fix that please help
Can I safely drive the car till I get my son to fix it?
Good video though Thanks
Let’s see if mine works if not we’ll get a gm lmao
I paid $24 for mine lmao 😂
I gotta do my thermostat I got the whole unit now gotta put it on
Finally built a better mouse trap
So if its all one part then if you get a p0599 its replace that thermostat assembly or god forbid the ecm?
Good Video. I do want to say that they sell just the thermostat and its much simpler to change. One hose and 4 bolts.
Hello!
I change thermostat, two days later change connector of heater system … Then Code 89 is one more time!
Somebody knows how reset It?
When a $10 thermostat just won't do….
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.
You know your stuff good video…..
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.
Great analysis Eric. Excellent job identifying the ECM was functioning normally. You saved the customer big bucks
I usually tell how old the particular episode is by the condition of the bill on your cap is. The more tattered the bill more recent the video.
GM: Lets take a simple $10 wax pellet thermostat and turn it into a $200 plastic heart monstrosity.
But sir, why?!
Because we are GM. We're like your crazy ex-girlfriend. Take a simple thing, and make it unnecessarily complex! 😂😂
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.
Loved my Vantage Pro Mine finally died and snapon wouldn't do anything….
Dad worked for Fisher Body 56.4 years. /i worked for them as a temp. We both always asked WTF were the engineers thinking.
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.
The Sonic is made in Korea.
Can i just disconnect the heater control wire and live without it?
خیلی خوب بود وجالب
Omg ok we get it..its shorted get on w it goooooowwwd
i have a 2012 sonic with the 1.4, it keeps going through thermostats.
my shop put in 3 thermostats in a year. and now having insufficient heat to the cab, and I am guessing its the thermostat again.. jw if u have any ideas why this would be happening?
Thanks for the video man. I would have followed the flow chart lol and made a mistake…
Thank you man!!!! I was looking for the resistance of the heater. Great video and info, thanks again.
Thanks mate
Saved me a few min which is priceless to me nowadays
I replaced the thermostat and the housing and the check engine light came back on with the same code (even after disconnecting the + side of the battery to clear the code.) I never see it leaking coolant but its always running low. Any thoughts on what it could be?
Could a short in the thermostat cause other electrical issues? I have this code along with problems starting the vehicle, battery, alternator, starter all check good.
I already replaced the whole thermostat and sensor on a Chevy sonic 2012 1.4 Turbo. However the code P0599 is still coming ON and OFF intermittently. Can anybody help? What else could be causing this code? I would really appreciate if somebody could help out. Thank you
What was the part that he replaced called?
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
I have the same code on my chevy sonic 2012 1.4 Turbo. I replaced the thermostat and housing and the code is still coming on and off. Any ideas please??
What diagnostic tablet you using and how much for one? LInk…