1-4 shift
Melting Slicks
Joined: Apr 2001
Posts: 2,108
Likes: 755
From: Bridgewater NJ
I activated it twice when I was first learning the clutch and shift points -- in the first couple of days I owned it -- but after that I have not encountered it once in the month since then. So I personally don't think there is any reason to get a bypass kit.
To answer your question directly, I don't know the RPM, but anecdotally it is a condition that you might never encounter.
To answer your question directly, I don't know the RPM, but anecdotally it is a condition that you might never encounter.
Advanced
Joined: Oct 2013
Posts: 68
Likes: 0
I've noticed at slow speed and low rpm the dash says shift from to 4 for fuel savings. But if I wanted to I can still go from 1-2. I have noticed that the shifter starts to want to go to 4, but if I out a little hesitation in my shift motion I can go straight to 2nd.
In reality. I'm rarely shifting at such low speeds, only when I get into traffic and we are crawling at about 20 mph
In reality. I'm rarely shifting at such low speeds, only when I get into traffic and we are crawling at about 20 mph
Race Director
Joined: Aug 1999
Posts: 13,303
Likes: 2,510
From: Bluffton SC via Canton Oh
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
To save us and GM a guzzler tax Corvettes since the C5 have a 1 to 4 forced shift pattern on the manual cars. What happens is when you start out at a slower speed the transmission will not allow you to shift into 2nd or 3rd... you need to go into 4th. It takes advantage of the cars torque, gets you into a higher gear and in theory says MPG.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
Racer
Joined: Oct 2005
Posts: 276
Likes: 0
From: Marietta GA
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Racer
Joined: Oct 2005
Posts: 276
Likes: 0
From: Marietta GA
I've only seen the message in traffic a few times and even then just holding it in first for a few rpm more took me through it. In my view, spending money just to eliminate the CAGS on the C7 is a waste. JMHO
Rat
Safety Car
Joined: Apr 2007
Posts: 4,548
Likes: 609
From: Southeast, WI
To save us and GM a guzzler tax Corvettes since the C5 have a 1 to 4 forced shift pattern on the manual cars. What happens is when you start out at a slower speed the transmission will not allow you to shift into 2nd or 3rd... you need to go into 4th. It takes advantage of the cars torque, gets you into a higher gear and in theory says MPG.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
just drive your car correctly. You will not have the skip shift interfere.
Instructor
Joined: Nov 2013
Posts: 207
Likes: 7
From: Jacksonville FL
To save us and GM a guzzler tax Corvettes since the C5 have a 1 to 4 forced shift pattern on the manual cars. What happens is when you start out at a slower speed the transmission will not allow you to shift into 2nd or 3rd... you need to go into 4th. It takes advantage of the cars torque, gets you into a higher gear and in theory says MPG.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
There are work arounds to elimiate this forced shifting. Heck I even bought a $20 gizimo for my C5 and used it one week and pulled it off.
I find any 1-4 issue can be overcome with a little more aggresive driving. I don't care about MPG.
TO me if you are getting a 1-4 message in your dash you are not driving the car correctly and probably don't need a Corvette!!!
But each to their own.
Almost makes you (me) not want to refer to the trans as a "Manual" anymore when they are suggesting or mandating your shift pattern.
Oh well, more incentive to drive it like you stole it! :-)
Race Director
Joined: Aug 1999
Posts: 13,303
Likes: 2,510
From: Bluffton SC via Canton Oh
I went out to lunch today and had a little time to play with it. Actually the skip pattern comes on so infrequently that I was wondering if it was tied to driving mode, but it is not.
I'm not hitting it in stop light to stop light acceleration because I am grabbing 3rd.... 1st to 3rd before I hit enough RPMs to trip the 1 to 4 shift. The car has lot of torque so I guess I've created my own CAGS. In fact I am going 1-3-5.
I'm not hitting it in stop light to stop light acceleration because I am grabbing 3rd.... 1st to 3rd before I hit enough RPMs to trip the 1 to 4 shift. The car has lot of torque so I guess I've created my own CAGS. In fact I am going 1-3-5.
Racer
Joined: Feb 2005
Posts: 482
Likes: 0
From: Florida
Drive it like it is meant to be driven and it is a non-issue. The only time I ever get the skip shift issue is usually when I am not paying attention, not enough rpms when taking off from a stop and making a turn. The problem has really been insignificant.
Burning Brakes
Joined: Jun 2013
Posts: 867
Likes: 26
From: SW Ohio
This information is directly from the C6 Owners Manual and specific to that model, but I presume it isn't substantially changed for the C7, and also presume that the same info is available in the C7 OM.
The 1-4 Skip-Shift light comes on when:
- the engine coolant temp is higher than 169 deg F.
- the vehicle is going 15 to 19 MPH.
- the vehicle is at 21% throttle or less.
The 1-4 Skip-Shift light comes on when:
- the engine coolant temp is higher than 169 deg F.
- the vehicle is going 15 to 19 MPH.
- the vehicle is at 21% throttle or less.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
It's not necessary to drive "around" the 1 to 4 shift if you just disable it. I spent the cost of one dinner($20) buying the CAGS eliminator for my C6 Z06. Now, it NEVER interferes with my shifting.
Burning Brakes
Joined: Jun 2013
Posts: 867
Likes: 26
From: SW Ohio
Again…from the manual:1-4 Shift Light (Manual Transmission)
When this light comes on, the vehicle can only be shfted from 1 (first) to 4 (fourth). The shift must be completed into 4 (fourth) to turn off this feature. This helps the vehicle get the best fuel economy. After shifting to 4 (fourth), the vehicle can be downshifted to a lower gear.
Notice: Forcing the shift lever into any gear except 4 (fourth) when the 1 TO 4 SHIFT light comes on may damage the transmission. Shift only from 1 (first) to 4 (fourth) when the light comes on.
There isn't a ton of info on this 'feature' as GM refers to it, but in the most simple terms, when you're accelerating from a stop in first gear, time your 1-2 shift so that your speed is either below or above the designated range, or stick your foot in the throttle aggressively enough to not trip the <21% throttle input. In other words, use the LOUD pedal...
Last edited by icntdrv55; Nov 20, 2013 at 04:58 PM.
Racer
Joined: Sep 2013
Posts: 481
Likes: 3
From: Houston
i guess what i am trying to understand is if you are in traffic and in 1st gear at 10mph, then traffic starts to move a little faster, if you shift and it forces you into 4th, it seems like the car will studder because it needs more speed to be in 4th. I would think in traffic going from 1st to 2nd would be the logical choice. i just don't get the 1-4th benefits. Seems like you would have to immediately shift down to keep the car moving correctly. Would like somebody's input on what the car feels like in traffic going from 1st to 4th at low speeds and low rpms and why this is put in place. just clueless on it.