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1 to 4 shift

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Old Sep 4, 2008 | 07:14 AM
  #1  
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Default 1 to 4 shift

Can I disable this feature on a C4
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Old Sep 4, 2008 | 08:01 AM
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quote by DDSLT5:

All you have to do is reach under the car, and pull off the CAGS connector from the side of the tranny (it is conveniently placed OUTSIDE the tranny - almost as if GM thought there might be those who would disconnect this function!).



You can also buy a module to plug into said connector for about $25, and it can also be eliminated through a tune.

Last edited by StealthLT4; Sep 4, 2008 at 08:03 AM.
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Old Sep 4, 2008 | 08:15 AM
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Originally Posted by StealthLT4
quote by DDSLT5:

All you have to do is reach under the car, and pull off the CAGS connector from the side of the tranny (it is conveniently placed OUTSIDE the tranny - almost as if GM thought there might be those who would disconnect this function!).



You can also buy a module to plug into said connector for about $25, and it can also be eliminated through a tune.
That's great to know. What a rediculous thing to have light up on the dash. Maybe with a set of 4:10's you MIGHT do it once in a great while otherwise, it just plain silly.
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Old Sep 4, 2008 | 08:17 AM
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It's a gimmick by GM to avoid paying the gas guzzler tax, so it's kind of a necessary evil.
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Old Sep 4, 2008 | 08:53 AM
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Originally Posted by StealthLT4
It's a gimmick by GM to avoid paying the gas guzzler tax, so it's kind of a necessary evil.
Gas Guzzler? My '91 gets almost the same gas mileage as my '08 Honda Accord!
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Old Sep 4, 2008 | 08:56 AM
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You can also pull the fuse to the backup lights, if you don't want to jack the car up and crawl under it.

The best way is to buy a CAGS plug, available from several Corvette catalogs, to plug the disconnected ends at the trans. It's only about $20. This will also prevent an alarm message.


Larry
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not easily impressed....
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Old Sep 4, 2008 | 08:59 AM
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its not just a light, CAGS clicks a solenoid over to prevent shifting into 2nd.

If its a 96, you need to buy a CAGS eliminator, or you will get a CEL.

I have one on mine, and it works fine, light still comes on, but no noid forcing me to skip shift.

NOW! all that said. I skip shift all the damn time when I'm trying to get good mileage.

Averaging about 18.7 in the city
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Old Sep 4, 2008 | 09:53 AM
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Is this eliminator the same thing as stopping the overdrive in the 4+3 from being automatic and converting it to manual? Or is this just a way to eliminate the annoying upshift light on the dash?
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Old Sep 4, 2008 | 08:42 PM
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I have one on mine, and it works fine, light still comes on, but no noid forcing me to skip shift.

NOW! all that said. I skip shift all the damn time when I'm trying to get good mileage.

Averaging about 18.7 in the city [/QUOTE]

i do the same thing.
ave. 24.2 city, 40 highway,( thats with playing around)
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Old Sep 4, 2008 | 09:07 PM
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haha, mine only gets driven 2 or 3 days a week, and 1 of the days is spent beating on it pretty well haha.

I've never seen a C4 getting 40 tho, thats impressive
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Old Sep 4, 2008 | 10:25 PM
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Originally Posted by StealthLT4
quote by DDSLT5:

All you have to do is reach under the car, and pull off the CAGS connector from the side of the tranny (it is conveniently placed OUTSIDE the tranny - almost as if GM thought there might be those who would disconnect this function!).



You can also buy a module to plug into said connector for about $25, and it can also be eliminated through a tune.
I will be doing this soon to mine. Although disconnected, I believe the skip shift light still comes on in the dash.
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Old Sep 4, 2008 | 10:32 PM
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Yeah, light still comes on, but all six speeds are accessible. Think of it as a reminder that if you hadn't unplugged that plug, you wouldn't be able to use second or third right now...
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Old Sep 4, 2008 | 10:34 PM
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Originally Posted by Mekanic
haha, mine only gets driven 2 or 3 days a week, and 1 of the days is spent beating on it pretty well haha.

I've never seen a C4 getting 40 tho, thats impressive
I know some folks claim slightly over 30 but 40???
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Old Sep 5, 2008 | 06:20 AM
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I've had my 1992 LT1 a couple of months now and had the CAGS disabled a couple of weeks ago. Couldn't work out when I bought the car why I couldn't engage 2nd gear when in traffic. The mechanic I took it to fixed it in 5 minutes. I can't see how rapping it out in 1st gear so that you can get into 2nd gear can be an economy measure
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Old Sep 5, 2008 | 06:47 AM
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40 mpg??? Man...that's impressive! I have managed to see 99 mpg on the computer, coasting downhill at an idle.
Mike
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Old Sep 5, 2008 | 09:46 AM
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Default thanks to all for your answers

I made an appointment to fix the 1-4 shift.
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Old Sep 5, 2008 | 11:36 AM
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Appointment?.. dude - do it yourself and save some bucks.. simple thing to do.
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Old Sep 5, 2008 | 01:40 PM
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Originally Posted by mrmtnbk1
I made an appointment to fix the 1-4 shift.
Unplug the relay in the engine compartment. No need to get under the car.
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Old Sep 6, 2008 | 10:02 AM
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Default Silly? Well, that depends...

Originally Posted by mdlfcrss
That's great to know. What a rediculous thing to have light up on the dash. Maybe with a set of 4:10's you MIGHT do it once in a great while otherwise, it just plain silly.
GM did it, not b/c they want to put that "feature" there, I'm sure. GM has had to jump thru some hoops to keep every MY Corvette from ending up in the "gas guzzler" group, which would have result in significantly increasing the cost to them (and us too); stuff like 1 to 4 shift and the ridiculous rear gear ratios (e.g., a 3.45 rear gear behind an engine that limits at 7200). However, this particular annoyance has an easy "fix". Both of my C4s have had that little annoyance dealt with by previous owners, but if it hadn't been, it is easy enough to simply pull the plug (as mentioned before!).

For a frustrated mechanical engineering type (like me), automotive engineering is fascinating to observe to see how with each MY they meet the challenges of emissions, economy, etc, and still strive for performance. CAGS is just one of them.

CAGS...part of a ballet all of us - GM included - have to endure long enough to get a "pass" from the EPA...

P.

P.
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