GM can't solve that issue but you can at the voting booth.
CAGS configuration
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
CAGS configuration
Not sure if this has been addressed, but why can't the CAGS (1 to 4) in an M7 be user configurable like the performance exhaust (on/off)?
Most drivers hate the 1 to 4 forced shift
Most drivers hate the 1 to 4 forced shift
Tech Contributor
Joined: Mar 1999
Posts: 10,445
Likes: 4,403
From: Northern VA
"Ask Tadge" Producer
CAGS has to be left engaged with an error if disconnected or deactivated. Otherwise the car will get hit with a lower EPA mileage number. It's why if you disconnect it, you'll get a CEL. Obviously the work-around is the plug-in resistor, but GM will never (and can't ever) authorize that or any other work-around.
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
CAGS has to be left engaged with an error if disconnected or deactivated. Otherwise the car will get hit with a lower EPA mileage number. It's why if you disconnect it, you'll get a CEL. Obviously the work-around is the plug-in resistor, but GM will never (and can't ever) authorize that or any other work-around.
Tech Contributor
Joined: Mar 1999
Posts: 10,445
Likes: 4,403
From: Northern VA
"Ask Tadge" Producer
I've never heard of the bypass causing any problems whatsoever, assuming it's not installed into the reverse lock-out solenoid plug versus the CAGS one. Doing the former will, of course, prevent you from engaging reverse, and is a common first-timer's mistake. But easily corrected.
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
Touring mode - normal driving. The CAGS is annoying, but want to be sure that installing a CAGS bypass will not violate the warranty. If it does, than I will simply put up with it until the warranty period is over.
Tech Contributor
Joined: Mar 1999
Posts: 10,445
Likes: 4,403
From: Northern VA
"Ask Tadge" Producer
CAGS has existed on GM manuals since the very early 90s. It's not going anywhere. The best you can do is either deal with it by driving past its RPM range, or just buy the resistor.
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Racer
Joined: Apr 2008
Posts: 270
Likes: 8
From: Michigan
[/tongue-in-cheek]
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,122
Likes: 381
From: Southeastern PA
LOL - I can always try that! Seriously though, it's worse than annoying - perhaps dangerous - when driving in congested traffic and the CAGS won't allow a timely shift, and you are losing speed while the car behind gets too close.
Le Mans Master
Joined: Sep 2009
Posts: 6,937
Likes: 348
From: My interests are mobile
To the best of my understanding, in the limited explanation I was given by a couple of the Corvette engineers was, that the EPA mandated mpg test involves speeding up and slowing down, simulating rush hour on the 405 essentially. There is a screen in front the operator/tester of the car, and you must throttle to keep up with what the screen demands. It also commands you to shift, due to rpm. The issue is, they stated that the shift command parameters were developed a LONG time ago, when transmissions weren't 6spds and 7spds. So, GM engineers came up with the idea to shift to 4th instead of 2nd, since the usable torque of the motor could handle it, and thereby pass the test in terms of MPG requirements.
Basically, it's a system designed to do well on an outdated testing system mandated by the govt. The engineers don't want it there, any more than you or I do.
BTW...I see you're from Chalfont...interesting...lol. I worked Turtle Creek PD years ago...years ago...
Basically, it's a system designed to do well on an outdated testing system mandated by the govt. The engineers don't want it there, any more than you or I do.
BTW...I see you're from Chalfont...interesting...lol. I worked Turtle Creek PD years ago...years ago...
Intermediate
Joined: Dec 2014
Posts: 42
Likes: 1
From: Summerville SC
Instructor
Joined: May 2012
Posts: 177
Likes: 4
Ha! They probably didn't miss yours - it won't do a thing, depending on when you shift. Mine rarely activates. It's more likely when traffic is stop and slow. I can't recall the RPM when you'll see the message and feel the bypass when shifting, but I think it's around 2000 or 2200 RPM. As others have suggested, just carry 1st gear a little higher than normal and you'll most likely never have to mess with it. Have a great day!
Last edited by jmk; May 25, 2015 at 01:14 PM. Reason: Better word choice
3rd Gear
Joined: May 2015
Posts: 3
Likes: 0
Cags
CAGS can be a nuisance. Especially if you are uphill behind some slow poke and a short shift to second gets you buy him rather than getting the rpm up in first to allow second.
I had an aftermarket tuner put in the jumper and fixed the problem on my 07 Z06
I had an aftermarket tuner put in the jumper and fixed the problem on my 07 Z06
Race Director
Joined: Sep 2001
Posts: 16,507
Likes: 84
From: Southern Indiana
Easy fix w/ the resistor. Costs about $1 and takes about 2 min if you have your car on a lift or stands. Hopefully GM will leave it the way it is, in order to meet the silly EPA rules & avoid (or reduce) gas-guzzler tax.
