1st to 4th skip shift

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Feb 13, 2007 | 10:24 PM

#21

LoneStarFRC

Team Owner

Joined: May 2001

Posts: 36,836

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From: Dear Karma, I have a list of people you missed.

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16

Quote:

Originally Posted by VetteBandit

Thanks for the info, Im glad I have the bypass - That seems like a bad idea on paper and in real life....what were they thinking?

-VetteBandit

Be glad they did.

It allowed the Vettes to pass certain EPA fuel mileage guidelines which ended up saving you and me a lot on the price of the car.

Feb 14, 2007 | 02:54 AM

#22

tstar

Le Mans Master

Joined: May 2006

Posts: 5,987

Likes: 18

From: DuBois PA

St. Jude Donor '11-'12-'13-'14-'15

Quote:

Originally Posted by LoneStarFRC

Yes it does lock them out and no, you can't ignore it. It will physically prevent you from shifting to either 2nd or 3rd.

I agree with DirteeDave. If you can shift normally into second or third when the light comes on, it means the CAGS system has been eliminated on your car using an easily obtainable plug in device (resistor).
On cars that can shift normally and have no light coming on, the CAGS system has been turned off in the ECM itself.

HTH,
Robert

Are you sure about the 3rd gear lock out? When I hit my CAGs in traffic I just shift into 3rd, it goes right in. Not an ideal situation but the engine has enough torque to putter through in traffic situations anyway...

Feb 14, 2007 | 10:15 AM

#23

87SAM

Safety Car

Joined: Jan 2001

Posts: 4,387

Likes: 691

From: Boise ID

Quote:

Originally Posted by tstar

What you say is true, also just the time it takes to try 3rd may have allowed it to shift into 2nd anyway. The conditionals for CAGs that everyone screams about are very narrow.

Engine coolant temperature is higher than 169°F,
Vehicles speeds are 15-19 mph and
Throttle percentage is 21 or less

When the above conditions are met, the computer will tell a solenoid mounted behind the shifter to activate and extend. When this solenoid is activated and extended, the shifter will not be able to go into second gear. This will force the driver to shift into 4th gear (but the driver can actually shift into any other gear as well).

Feb 14, 2007 | 11:24 AM

#24

B-ras

Melting Slicks

Joined: Dec 2004

Posts: 2,677

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From: I have to return some videotapes

Quote:

Originally Posted by VetteBandit

Thanks for the info, Im glad I have the bypass - That seems like a bad idea on paper and in real life....what were they thinking?

-VetteBandit

I think you must have it. But if you want to be sure, the next time you're under the car look high up on the driver's side (IIRC) of the tranny. You should see a resistor plugged in between the solenoid and wiring harness.

As for why they did it, I heard that they gained two mpg city, which is a big deal for GM's CAFE numbers.

Feb 14, 2007 | 11:51 AM

#25

bennettrp

Pro

Joined: Sep 2005

Posts: 538

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From: Geneva, IL Bring back the Chief!

St. Jude Donor '06-'07-'08-'09-'10,'13-'14,'19-'20-'21-'22

Quote:

Originally Posted by abraswell

OK, how about a left turn lane when you're the third car in line after a red light. You pull away slowly behind the traffic and move to drop it into second midway through the turn. But no! The computer puts it in fourth for you, so the car is lugging about 500rpm. Yes, you can fake the solenoid by going into the fourth gear gate then grabbing second, or you could have just tached it out a bit more in first.

The point is that there are lots of these situations in daily driving, and I don't want to have to re-learn my techniques or "work around" the electronic nanny. I accomplished this with a $20 part (which can actually be replicated for just a few $). I assure you I am no granny driver. If I wanted a computer to pick gears for me I'd have bought an auto.

I finally tuned mine out with HPTuners. A buddy used the bypass and he likes that.

Feb 14, 2007 | 12:15 PM

#26

VetteDrmr

Le Mans Master

Joined: Dec 2000

Posts: 9,909

Likes: 1,858

From: Hot Springs AR

Quote:

Originally Posted by VetteBandit

Thanks for the info, Im glad I have the bypass - That seems like a bad idea on paper and in real life....what were they thinking?

-VetteBandit

Honestly, GM was a genius when they came up with CAGS. It allowed them to avoid the Fed's gas guzzler tax, and was (IMO, intentionally) designed very simply and accessible, and is therefore very easy to get around.

Takes a 2200 ohm resistor and some electrical tape (to cover up the solenoid connector). Or a CAGS eliminator, which is much prettier.

Have a good one,
Mike

Feb 14, 2007 | 05:20 PM

#27

LoneStarFRC

Team Owner

Joined: May 2001

Posts: 36,836

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From: Dear Karma, I have a list of people you missed.

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16

Quote:

Originally Posted by 87SAM

Thanks for posting.

Many members not aware of all the conditions affecting CAGS.
Also, CAGS only activates once per start stop cycle. In other words, if you accelerate very slowly til the light comes on and keep slowly accelerating until it goes out, then decelerate again to within the range that it would normally activate, it won't "re-activate" again. Unless you make another stop.

Feb 14, 2007 | 08:20 PM

#28

Z06-Gator

Instructor

Joined: Jan 2006

Posts: 204

Likes: 2

From: Flagler Beach Florida

Quote:

Originally Posted by Frankie2blue

It's a five minute fix. Throw the Cags bypass in and forget it. I had my car about an hour when i did mine. Then drive it however you feel like driving it.

It's your car, you should be able to drive it however you want without this annoyance. For $19 it is well worth the fix to install the skip shift eliminator. GM having this feature saved us all much more than $19 when we purchased our rides but again very it's easy to take care of. Enjoy your new car!