1 to 4 shift ????
Pro
Joined: Jul 2003
Posts: 536
Likes: 0
From: Beavercreek Ohio
Unless someone has installed something called a CAGS bypass, the 1st to 4th system is always active. It essentially forces you to shift from 1st to 4th in an effort to save gas and thereby avoids the gas guzzler tax. Most see this as an annoyance and either just "drive through it" by getting the engine rpm's up, or deactivate the system by putting in the "Computer Assited Gear Selection" (CAGS) bypass device.
Safety Car
Joined: Feb 2004
Posts: 4,208
Likes: 2
From: Rochester MN
CI 5-6-7-8 Veteran
St. Jude Donor '04-'05-'06-'07
NCM Ambassador
if you are seeing the light, but are still able to shift from 1st to 2nd when it is lit, then you already have a CAGs eliminator installed. You do not want to reactivate this feature - it is a pain.
Burning Brakes
Joined: Feb 2006
Posts: 785
Likes: 1
From: Middletown PA
Originally Posted by gtsvette
i saw a little light in my fathers 99 corvette. what is the 1 to 4 shift ? and how do u activate?
Race Director
Joined: May 2006
Posts: 11,865
Likes: 67
From: 1000 Vin Scully Ave, L.A California
i dont have a cags, and its a little hard sometimes to shift into 2nd, but i do it anyway... i thought something was wrong with my tranny when i shifted from first to second and ended up in fourth
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Safety Car
Joined: Feb 2004
Posts: 4,208
Likes: 2
From: Rochester MN
CI 5-6-7-8 Veteran
St. Jude Donor '04-'05-'06-'07
NCM Ambassador
A CAGs eliminator is fairly cheap, and it is real easy to install - I know it is easy enough to shift around the CAGs, but why would you when a simple fix is available?
Melting Slicks
Joined: Dec 2004
Posts: 3,049
Likes: 0
From: The second childhood is the best one of all.
Originally Posted by gtsvette
i saw a little light in my fathers 99 corvette. what is the 1 to 4 shift ? and how do u activate?
Race Director
Joined: Nov 2004
Posts: 11,062
Likes: 1,271
From: Central Ma
Originally Posted by Alegre323
i dont have a cags, and its a little hard sometimes to shift into 2nd, but i do it anyway... i thought something was wrong with my tranny when i shifted from first to second and ended up in fourth
Last edited by steve8; Jun 20, 2006 at 05:59 PM.
Advanced
Joined: Jun 2006
Posts: 66
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From: Joplin Missouri
Pro
Joined: Jan 2005
Posts: 569
Likes: 2
From: Corona CA
Originally Posted by cb5300
When I had my '01 and '04 tuned, I had the 1 to 4 shift turned off in the computer...easy enough, didn't have to unplug/buy anything extra. Everything has worked great since.
This is the first time I've heard that it can be turned off in the computer. Can any tuner do this?
From another Mag Red II
Drifting
Joined: Nov 2005
Posts: 1,393
Likes: 0
St. Jude Donor '08-'09
Originally Posted by steve8
Cags eliminator is a very worthwhile and cheap fix. Some people will disagree and say just go over 19 mph and you're all set, but there are plenty of low speed applications where it comes in handy. I believe you can cause damage by forcing it into second if it wants to go into fourth. Get the cags eliminator.
The 1 to 4 is a major pain that seems to activate when you least expect or need it
Team Owner
Joined: Aug 2002
Posts: 35,617
Likes: 166
Tech Contributor
Cruise-In 11 Veteran
NCM Ambassador
St. Jude Donor '05-'06-'07-'10
The 1 to 4 shift exists to help GM meet their CAFE requirements.
When this light comes on,
you can only shift from
FIRST (1) to FOURTH (4)
instead of FIRST (1) to
SECOND (2). You must
complete the shift into
FOURTH (4) to deactivate
this feature. This helps
you get the best possible
fuel economy. After shifting
to FOURTH (4), you may downshift to a
lower gear if you prefer.
This light will come on when:
0 The engine coolant temperature is higher than
0 You are going 15 to 19 mph (24 to 31 km/h) and
You are at 21 percent throttle or less.
When this light comes on,
you can only shift from
FIRST (1) to FOURTH (4)
instead of FIRST (1) to
SECOND (2). You must
complete the shift into
FOURTH (4) to deactivate
this feature. This helps
you get the best possible
fuel economy. After shifting
to FOURTH (4), you may downshift to a
lower gear if you prefer.
This light will come on when:
0 The engine coolant temperature is higher than
0 You are going 15 to 19 mph (24 to 31 km/h) and
You are at 21 percent throttle or less.
