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I recently purchased a '23 Z51 3LT convertible. At different times a ring - sometimes green, sometimes yellow - appears in the center of the tach display. I assume that this is a shift light function. Reading through the manual, I can't seem to find any information on this. Are the rings indeed the shift lights? At what RPM to they appear? Do they appear no matter what mode you are in (I typically drive in My Car mode with the transmission in manual mode) or only in certain modes? Does the RPM when they appear change depending on what mode you are in?
I have asked the shop foreman and the salesman at the dealership where I purchased the car and they seem clueless.
As noted in the manual, and in post 8 which was taken from the manual, shift lights appear in several display themes, not limited to the Sport Display Theme. There is a HUD display with shift lights. And if the digital form of tachometer is selected, the shift lights appear on the DIC. I found some examples. In Sport Mode, with the traditional round tachometer gauge, they show in the DIC as described in post 17 as rings. Attached is are images of the rings that will show in the Sport Mode DIC. Keep in mind that the car allows independent selection of the Driver Mode and the DIC display theme. So the first three images are showing a Sport Display Theme, but the symbol at the bottom indicates the driver mode is Track. You can see the green, yellow, and red rings.
The next image is a track mode display theme with the digital tachometer option selected. You can tell it is the Track Mode display theme because it shows 4 info tiles on the left - only available in the Track DIC theme. But for that example the Driver Mode is Tour based on the symbol at the bottom. Those empty parallelograms to the left and right of the digital RPM are where the lights will appear. And, the HUD display has an option that works the same way. The fourth image shows the HUD Track Display Mode option - those parallelograms are the shift light and will light (I originally said green red yellow for HUD - I do not know if they light in color, sorry. Someone else will need to tell us that) in colors, green, yellow, then red.
You're talking about the Performance Shifting Light. "If equipped, this light may display green when sport mode is activated and certain driving conditions are met."
You're talking about the Performance Shifting Light. "If equipped, this light may display green when sport mode is activated and certain driving conditions are met."
The Performance Shifting Light is different, it is a green indicator light that shows when the car has entered Performance Shift mode. The shift indicator rings show up when the DIC is set to Sport mode.
Where it is explained in the manual? I searched on shift lights (not to be confused with Performance Shift Light), tachometer, and yellow. I found no explanation of how colored lights indicate when to shift.
Shift Lights (again not Performance Shift Lights) appears 5 times in the 2024 manual. 1) displayed in Sport/Z Mode, 2) Traditional tachometer shows a linear gauge, and Numerical tachometer shows shift lights with numerical RPM. 3&4)under Tachometer:Shift lights will not appear until the engine is warm. In Track theme, the tachometer can be set to display a traditional tachometer, or a numerical tachometer with shift lights.5)Under HUD views in Track Mode:shift lights. But as far as I can tell, it never explains how they work.
Where it is explained in the manual? I searched on shift lights (not to be confused with Performance Shift Light), tachometer, and yellow. I found no explanation of how colored lights indicate when to shift.
Shift Lights (again not Performance Shift Lights) appears 5 times in the 2024 manual. 1) displayed in Sport/Z Mode, 2) Traditional tachometer shows a linear gauge, and Numerical tachometer shows shift lights with numerical RPM. 3&4)under Tachometer:Shift lights will not appear until the engine is warm. In Track theme, the tachometer can be set to display a traditional tachometer, or a numerical tachometer with shift lights.5)Under HUD views in Track Mode:shift lights. But as far as I can tell, it never explains how they work.
It's not a shift light. It's a performance transmission notification.
It's not a shift light. It's a performance transmission notification.
But the OP isn't asking about the Performance Transmission indicator light, he is asking about the green and yellow shift light rings around the tachometer when the DIC is set to Sport mode. Those don't seem to be explained in the owner's manual.
I think he is talking about the performance transmission light judging by a "circle in the center" which the performance indicator is (depending on display) and does light up green and yellow. But only the OP would know.
I recently purchased a '23 Z51 3LT convertible. At different times a ring - sometimes green, sometimes yellow - appears in the center of the tach display. I assume that this is a shift light function. Reading through the manual, I can't seem to find any information on this. Are the rings indeed the shift lights? At what RPM to they appear? Do they appear no matter what mode you are in (I typically drive in My Car mode with the transmission in manual mode) or only in certain modes? Does the RPM when they appear change depending on what mode you are in? I have asked the shop foreman and the salesman at the dealership where I purchased the car and they seem clueless.
Originally Posted by nhlgopens
It's not a shift light. It's a performance transmission notification.
Is he? He describes something that change colors and he titled the thread as "shift lights". There is a difference between the Performance Shift Light and the "shift lights". The Performance Transmission light to which you refer is not the same as the shift lights. Both are mentioned in the manual. The Performance Shift Light, aka the Performance Transmission Light comes on to indicate that the car has detect spirited driving and has modified the gear selection (it is also referred to as Driver Influenced Gear Selection). It happens in all modes, but that light, a little gear shaped ring does not appear in all modes. In the 2020, 2021, 2022 manuals that light is called a Performance Shift Light. The 2023 and 2024 manuals it refers to both a Performance Shift Light and a Performance Transmission Light but it appears to be the same light. In the 2021 it circle/gear is described as a performance shift light, in 2023 and 2024 its called Performance Transmission Light. But, it doesn't change color - and the OP described something that changes color. But, if that is what he was asking about then you are correct - its explained in the manual.
But,since he said it changes color, and since he titled the thread "shift lights". I'm thinking he meant the shift lights. Shift Lights are a separately list feature also appears in every manual. And, although its mentioned, the way it works is never described.
Last edited by Andybump; Jun 11, 2024 at 07:38 PM.
I dug thru the (2021) manual and found mention on page 96. It mentions a "shift indicator" in Sport Mode. I've seen them when smashing the gas .. but only occasionally. A curved bar of green, which changes to yellow, (then to red? haven't seen that) as the engine winds up. .. I've not seen it unless I'm booting it. ... It startled me the first time.
I dug thru the (2021) manual and found mention on page 96. It mentions a "shift indicator" in Sport Mode. I've seen them when smashing the gas .. but only occasionally. A curved bar of green, which changes to yellow, (then to red? haven't seen that) as the engine winds up. .. I've not seen it unless I'm booting it. ... It startled me the first time.
Thats right! Folks have seen it, but its not explained in the manual. I also checked the getting to know your corvette booklet and the corvette performance pamphlet - its not described there either.
I recently purchased a '23 Z51 3LT convertible. At different times a ring - sometimes green, sometimes yellow - appears in the center of the tach display. I assume that this is a shift light function. Reading through the manual, I can't seem to find any information on this. Are the rings indeed the shift lights? At what RPM to they appear? Do they appear no matter what mode you are in (I typically drive in My Car mode with the transmission in manual mode) or only in certain modes? Does the RPM when they appear change depending on what mode you are in?
I have asked the shop foreman and the salesman at the dealership where I purchased the car and they seem clueless.
This thread is getting way off track. In sport mode, the tach display will show an outer green ring. As RPM's increase the inner yellow ring shows up. Near red line, the most inner red ring is displayed. Just a different fancy display of the tach. The easiest way to see it is to put the trans in manual mode, hold off the shift and let the RPM's rise. You'll see the other rings. OP, as you surmised, it is essentially a shift light function.
As noted in the manual, and in post 8 which was taken from the manual, shift lights appear in several display themes, not limited to the Sport Display Theme. There is a HUD display with shift lights. And if the digital form of tachometer is selected, the shift lights appear on the DIC. I found some examples. In Sport Mode, with the traditional round tachometer gauge, they show in the DIC as described in post 17 as rings. Attached is are images of the rings that will show in the Sport Mode DIC. Keep in mind that the car allows independent selection of the Driver Mode and the DIC display theme. So the first three images are showing a Sport Display Theme, but the symbol at the bottom indicates the driver mode is Track. You can see the green, yellow, and red rings.
The next image is a track mode display theme with the digital tachometer option selected. You can tell it is the Track Mode display theme because it shows 4 info tiles on the left - only available in the Track DIC theme. But for that example the Driver Mode is Tour based on the symbol at the bottom. Those empty parallelograms to the left and right of the digital RPM are where the lights will appear. And, the HUD display has an option that works the same way. The fourth image shows the HUD Track Display Mode option - those parallelograms are the shift light and will light (I originally said green red yellow for HUD - I do not know if they light in color, sorry. Someone else will need to tell us that) in colors, green, yellow, then red.
Last edited by Andybump; Jun 21, 2024 at 02:13 PM.
Reason: add the HUD example - they are in color
As noted in the manual, and in post 8 which was taken from the manual, shift lights appear in several display themes, not limited to the Sport Display Theme. There is a HUD display with shift lights. And if the digital form of tachometer is selected, the shift lights appear on the DIC. I found some examples. In Sport Mode, with the traditional round tachometer gauge, they show in the DIC as described in post 17 as rings. Attached is are images of the rings that will show in the Sport Mode DIC. Keep in mind that the car allows independent selection of the Driver Mode and the DIC display theme. So the first three images are showing a Sport Display Theme, but the symbol at the bottom indicates the driver mode is Track. You can see the green, yellow, and red rings.
The next image is a track mode display theme with the digital tachometer option selected. You can tell it is the Track Mode display theme because it shows 4 info tiles on the left - only available in the Track DIC theme. But for that example the Driver Mode is Tour based on the symbol at the bottom. Those empty parallelograms to the left and right of the digital RPM are where the lights will appear. And, the HUD display has an option that works the same way. The fourth image shows the HUD Track Display Mode option - those parallelograms are the shift light and will light (I originally said green red yellow for HUD - I do not know if they light in color, sorry. Someone else will need to tell us that)
So good! Thanks for the write-up and pics 👍👍
Additional question, I thought shift lights also appear in an outer ring when in non tach display mode specifically when using the MPH display. Yes/No?
shift lights
