[Mr. Wyndham]

The steering rack may have been the wiring issue...rare, but there. Perhaps something was jostled while installing the new parts?

As far as overheating, did you have the automatic transmission fluid level checked before going out on track? This could lead to temperature issues.

That all said - your story about the needle moving erratically when you accelerate is very strange...this might not be an overheating issue at all, but electrical?

[Reidar94]

Originally Posted by Mr. Wyndham

The steering rack may have been the wiring issue...rare, but there. Perhaps something was jostled while installing the new parts?

As far as overheating, did you have the automatic transmission fluid level checked before going out on track? This could lead to temperature issues.

That all said - your story about the needle moving erratically when you accelerate is very strange...this might not be an overheating issue at all, but electrical?

The front bumper was safely removed and the parts were installed on the bumper away from the car and safely put back on without any wires getting caught, so that is not the issue. The transmission fluid had been checked at service not long before the track day but it could have been an issue for the A10 overheating, sure. But that doesnt explain the rest of the issues.

Perhaps I just got lucky and drew the short straw and got a lemon? :/
Will see if I can get the exact code from the service advisor and perhaps anyone here can shed some light on it.

[Can'tHave2MuchHP]

I'm betting on some sort of electrical or sensor issue. If all is mechanically sound, then I highly doubt you could over heat a stock ZL1 on the track. Have a dealer or experienced mechanic check it over and look at the sensors/wiring. Codes? Data-logging?

[camaro5]

Either the rack power plug is not fully seated or the steering torque sensor is intermittently defective.

Check power plug, if fully seated - replace steering torque sensor.

Many instances of these failures.


Hot trans - check fluid level.

.

[HDRDTD]

Originally Posted by Reidar94

I have only installed the ZL1 1LE aero package which should improve aero for cooling, seeing as the ZL1 1LE is built for attacking times at the track. So I highly doubt thats the issue.

I agree, that's why I said the idea was far-fetched.

With everything that was overheating, it seemed that one thing that 'might ' be in common was air flow (lack of it?) though all those coolers.

[HDRDTD]

OK, do we know for sure that those parts (steering rack, etc) were REALLY overheating? Any chance that there's an electrical issue somewhere that's just making the cars systems THINK those items are overheating?

Is this issue repeatable? if so, perhaps use a temperature gun to measure the temps to verify that they are really getting that hot? just to verify/confirm that it's not just some sort of electrical issue?

The Gen5's were very sensitive about ground connections. Sometimes even moving a ground wire from one location to another to make room for something like the CAI, would result in weird misc electrical issues.

[SLO]

You had the a/c going while on a track?

[Fraxum]

Originally Posted by Reidar94

Hi,

Two days ago(6/04/2018) I was driving my 2018 A10 ZL1 with the 1LE aero package for better airflow etc (the car is 4 months old and barely 4000km on the odo) on the track and I got some nice error messages. The scariest was when I was approaching a corner at 240kmh and whilst braking I get an error message on the center display on the instrument cluster saying "Service - Power steering, drive with care" and when taking the corner at 120kph the power steering went out completely and it was like trying to turn a 2ton boulder on a skateboard, this was extremely scary as the car was super hard to turn and control and I was close to hitting a wall!

On top of the power steering overheating, I also got a message saying something like "turning off AC due to engine overheating", the transmission was also running really hot (on or very very close to the red mark), the sessions was not very long 10-20min with breaks in-between.

No modifications has been made to the car other than the 1LE aero package (grille, wing, dive planes etc) and new race spec brake fluid and some "better" engine oil provided by service center.
I did some research and apparently I am not the only one with this issue and the issues seem to be copy&pasted from the Corvette C7s pretty much.

The day after(7/04/2018) all this happened I took the car straight to my service center (driven super carefully) and it didn't take long before they called me back saying they found an error code saying something along the lines of "Power steering and rack overheated" she wouldn't go into much detail over the phone and she also informed me that they had not begun testing the engine overheat and transmission running hot as the PS was their nr1 priority.

Today(8/04/2018) I received a call from the service center saying that they dont know how to fix this issue and that his been escalated to GM NA (I live in UAE) and awaiting a reply from them. In the mean time they obviously have to keep my car there and I am trying to get a loaner car of equal value (but I dont want a camaro or corvette at this point).


Is there anyone else on this forum with similar issues or know how I can get in touch with people from GM NA to get this sorted because here in UAE the GM reps arent very helpful and dont really grasp the danger in having the PS to completely stop working whilst driving.


Thanks,

Alex

It may not be relevant but my 5th gen ZL1 M6 did exactly the same thing with the warning chimes.

I took it into the dealer and after several tries cornering the car they recreated the problem. Long story short after 1 1/2 months of GM and the dealer trying to fix it and 2 1/2 more months of waiting GM traded me even up + cash back to me for a '16 SS. They reimbursed the full value of my ZL1 purchase and I even got them to give me a discount on the SS. By the end of it my ZL1 was so taken apart I did not even want it back.

[kwav8r]

Based upon the info provided by the OP, I'm inclined to think that TSB #17457 may be part of the problem...

https://www.camaro6.com/forums/showthread.php?t=527188

[17CamaroZL1]

Originally Posted by kwav8r

Based upon the info provided by the OP, I'm inclined to think that TSB #17457 may be part of the problem...

https://www.camaro6.com/forums/showthread.php?t=527188

I agree. I'd say that's exactly the issue here.

[BMWM.D.]

Originally Posted by 17CamaroZL1

I agree. I'd say that's exactly the issue here.

Yep...sounds very likely.

[Reidar94]

Hey all, sorry for the long inactivity.
Long story short; after the first time it happened they changed the steering rack and said everything was fine. Took it to track and it happened again, brought the car back to service centre, they said it was fine and no codes were logged and that they had already changed the steering rack once and couldnt do it again. So after a lot of complaining and yelling (unfortunately) they agreed to datalog the car on track.

They did, and everything overheated (NO SAFETY message came up on the IC, so we had to manually switch between the temps and monitor) in the car after only 5-7min (coolant was on redline 125C, oil was on redline 160C and transmission got extremely hot as well and was shifting extremely poorly, it was throwing gears way too late and really hard and the downshifts were late and hard as well so the car felt like it was bouncing.

So we had 4x20min sessions scheduled, the first session we drove approx 10 min (7min+cooldown lap) and then we said next session the steering will overheat and shut off. After letting the car cool for 30-40min we took it out for session 2 and after 10 min the power steering failed and of course the temps were off the charts too.

so all in all we drove 1x20 out of 4 pretty much.
GM are of course saying the car is working according to design, but when crappy cars from the 90s/early 2000' and Porsches run circles around this "ZL1 track car", it makes you wonder how "track ready" it really is.

[LiqTenExp]

As an opposite experience:

I ran 4 25 min sessions up at Lime Rock during last Summer and came back into the pits each time with no indication anything got even close to overheating. Like oil/water temps no higher than I'd see on the street/traffic, M6 car. Gotta be something wacky with your car.

[full*throttle*therapy]

Originally Posted by Reidar94

Hey all, sorry for the long inactivity.
Long story short; after the first time it happened they changed the steering rack and said everything was fine. Took it to track and it happened again, brought the car back to service centre, they said it was fine and no codes were logged and that they had already changed the steering rack once and couldnt do it again. So after a lot of complaining and yelling (unfortunately) they agreed to datalog the car on track.

They did, and everything overheated (NO SAFETY message came up on the IC, so we had to manually switch between the temps and monitor) in the car after only 5-7min (coolant was on redline 125C, oil was on redline 160C and transmission got extremely hot as well and was shifting extremely poorly, it was throwing gears way too late and really hard and the downshifts were late and hard as well so the car felt like it was bouncing.

So we had 4x20min sessions scheduled, the first session we drove approx 10 min (7min+cooldown lap) and then we said next session the steering will overheat and shut off. After letting the car cool for 30-40min we took it out for session 2 and after 10 min the power steering failed and of course the temps were off the charts too.

so all in all we drove 1x20 out of 4 pretty much.
GM are of course saying the car is working according to design, but when crappy cars from the 90s/early 2000' and Porsches run circles around this "ZL1 track car", it makes you wonder how "track ready" it really is.

Is your vehicle equipped with PDR?

You stated: So after a lot of complaining and yelling (unfortunately) they agreed to datalog the car on track. What tool was used to data log?

Please provide a link to these datalogs for your sessions so we can look at them and learn from them, and perhaps assist you with the situation.

Also, there was TSB referenced earlier that has been found to be the cause of random electrical gremlins, you said you would have them look into that, what were findings of that effort?