Hey guys,

I just picked up a 2013 Grand Sport at the NCM. What a great experience. I love the car, but am still annoyed by some of the typical C6 defaults, and was wondering if there was a way to set them. I think all of them are controlled by the BCM, but I could be wrong.

A few of the things I would like to change are:

Default state of AC recirculate button to ON
Default state of traction control to COMPETITION MODE
Default state of DLR / Head Lights to OFF
Disable automatic door locks when vehicle is moving / has moved.
Disable chime for seatbelt not buckled. (its extremely annoying when backing out of my long driveway)
Disable destination entry lockout for NAV when vehicle is moving. Annoying on a road trip when the passenger could be programming it for a lunch destination.

Are any of those possible?

Thanks guys! I've been lurking for a few years of owning my '08, but now with the '13, I finally decided to join up.

Jason S.

 

The first item, the 'A/C recirc' always turns ON on my 2012 man. And I'd like it OFF. On means recirc is activated, with the amber LED lighted. I switch A/C off before getting to my destination to avoid the dreaded moldy smell, and every time I turn it on again (on next trip), the stupid recirc automatically turns on, even though I don't use the 'auto' button (just manually). But I'm used to that.

I'd really like the DRL off, seatbelt chime off, and nav lockout changed as well. AH is fine full on for me, since 'competitive mode' lights up the T/C off warning, and it's annoying as hell to me. And the 'auto lock' feature, which for some absurd reason is not programmable, doesn't really bother me since nothing actually moves (it's all electronic). I'm pretty sure it's not possible to do most of that, but I subscribed just in case .

 

Yeah, I was afraid that this stuff wouldn't be programmable. Is the BCM that much harder to hack than the PCM? There are quite a few tools to program the PCM, and apparently none for the BCM....

Thanks,
Jason

 

Well I'm no expert but that's never kept me from offering up information . I always sleep at Holiday Inn Express,,,,,,
Traction control mode doesn't change on its own. Set it on Comp Mode and it will be your default.
A/C Recirc isn't really a default. It comes on automatically because the temp difference between outside and your inside setting is above a preset threshold ( don't remember what it is).
DRLs are required by law and not programmable, but you can pull a fuse if you wish.
Seat belts are the law so the chime is not going to be programmable either,, anti lawsuit protection I'm sure.
I was pretty sure the door locks were programmable but haven't really checked it. Your choice obviously but I can't think of one reason to not lock the doors when moving.

Hope this was helpful ( or at least not too annoying).

 

At least for me, the traction control resets to "ON" every time I start the car. Anyone else want to chime in with what theirs does? Is this setting controlled by the key fob, or the seat/mirror preset?

Ah, that would might explain why mine kept shutting off the recirc. Thanks for the insight. Still doesn't help me change it. Maybe the temp is programmable.

I'm quite sure that on cars, DLR are not required by law (at least in the US). Only on motorcycles... Which is one of the reasons that I don't like the DLR on in my vehicles. I think that it takes away from motorcyclist safety when half the 4 wheeled vehicles have DLR on...

As for the seat belt chime, are you sure that's a law? I know that the dash LED is required, but my '02 Duramax doesn't chime....

The only programmable door lock info that I've been able to find has to do with the key fob when the car is off / parked. Nothing that I've seen lets you turn off the locks when the vehicle is moving.

I can think of a few reasons I'd like the doors to remain unlocked. Letting someone out of the car at their house / car is annoying and confusing for anyone not used to the damn things. Further you don't even hear them lock so, passengers are usually very confused.

The more important reason, is that I DO NOT want to have them locked in case of an accident. If I'm unconscious and there is a fire, how is a good Samaritan supposed to get me out of the car?

Thanks for the thoughts,
Jason

 

The EBCM (not BCM) resets with each ignition cycle so TC and AH will be in their full on mode. This has been normal operation for at least 15 years. As for TC being on it isn't that big of a deal as you can liberally spin the tires with it on.

Not sure what the big whoop to do about the AC starting in one mode Vs a different one is about. If you have the after blow feature activated you don't have to worry about the moisture in the AC system causing a build up of mold so you don't have to worry whether the system is on/off or in recirculate or not. Even recirculate isn't that much of a deal since they can't recirculate as large a percentage of air as they did before 1971. It is dangerous from a Carbon Monoxide stand point so for the last 40 years they have to provide a fairly large percentage of fresh air from the outside even in recirculate mode.

There is a way to temporarily modify the speed sensor signal input to the Nav system so you can fool it into thinking the car is standing still. Do a search on the forum.

As for the door locks being locked when the car is moving. Although defeatable on some GM cars in the past it isn't that way any more. On cars like my 08 Malibu the locks are designed as part of the car's crush zones and help with reducing impact forces experienced by the occupants when the car is an accident. Also, you really don't want the ones on the Corvette unlocked while the car is moving due to the nature of the latch system. If the doors were unlocked all it takes is a bump of the internal switch for the door to open. Think about a passenger who is sleeping and leaning against the door who accidentally bumps the switch while the car is turning left. Bang the door opens and the only thing keeping them from falling out of the car is the seat belt. Probably wouldn't do much for the door either as it swung out hard on its hinges. Defeating the door lock is a huge personal safety issue.

Bill

 

I do love how when you ask, "can it be done", the inevitable question is "why on earth would you want to do that".

Sorry, but every time I get in the car I feel like I have to push 10 buttons to get the car set the way I want. AND many of those "features" used to either not exist or were persistent in their prior state (the HVAC settings for example).

As for the doors, a simple bump isn't enough to open the door. Try it.

Thanks for the info on the nav. That will come in very handy for the next road trip.

Now if I could just get the rest of the stuff to stay the way I'd like it

Thanks,
Jason

 

Jason, I'm with ya...I'd much prefer an old school ignition key, manual door handles, & ZERO electronic nannies. The Superformance GT40 is definitely more my style.

 

I'll do ya one better...I'd like to get rid of that damn ABS...and the stupid clutch dumb-driver switch...and the air bag that won't allow me to change to a custom steering wheel...geez, there's a whole list.

 

You can set all the personal stuff like AC temp and HVAC modes, radio stations, mirror positions, HUD modes etc and PRESS MEM 1 or MEM2 and hold it. All that stuff will set and go to memory. Each time you unlock the car or press MEMORY 1 or 2 it will revert to what you progremmed last!

 

The HVAC recirc doesn't stay set.... It does in my 2002 Duramax.... Sigh....

 

Make sure that your not trying to tell it to do something that it thinks is illogical. EXAMPLE You can not turn the HVAC AC compressor OFF if you have defrost selected.

 

Nope. Regular vents. AC on.... I HATE that it does the "thinking" for you now. But no, I do not have defrost selected....

GM products have been turning off recirc for years if you select defrost, but that happens immediately. Not when you turn the car off and back on. How does the car know if the moisture is worse inside or outside the car?

For example, you drive into a summer thunderstorm in the desert. I'm damn sure the air INSIDE the car is dryer in that case than the 100% humidity air outside the car. But, the car knows better, and turns the recirc off...

Again, thanks for the thought.

Jason "a hellava lot smarter than my car" S.

 

I don't think there's Memory 1/2 in the 1LT trim... & the HVAC settings are always the same as I left them after it was last driven..

 

Have tried it and it opened. Parked car, leaned against the door, touched the button and the door opened. That is what could happen if are driving with the door lock defeated.

Bill

 

If car is unlocked and fob not present, doors open, leaning against them or not . I leave mine unlocked all the time (in the garage), as in not programmed to auto-lock. Obviously lock it when going somewhere, by pressing the door lock button, so I don't have to whip out the remote. Just wish the 'meep' was a little louder .

 

Huh, I tried it again yesterday, twice. The door does partially open, but only to the first stage. The second stage still keeps the door firmly closed. If you keep pressing the button and pushing on the door, then yeah, I can see how it would open....

Thanks,
Jason

 

So it sounds the the resounding answer is no, you can't reprogram the BCM at all or in any meaningful way. Has anyone looked at this? I know that some guys were doing some work on the BCM for the Pontiac GTO or G8....

Thanks,
Jason

 

The BCM holds all the C5 RPO info. There are things that you can program in and out depending on year.

2001+ can turn Tire Pressure Monitor on or off. All can program Real time dampening.

To interface and program the BCM, you have to use the GM Tech 2.

BC

 

Yeah, I've seen what is accessible with a Tech2 and I'm looking to go well beyond that, similar to EFI Live for the PCM, but for the BCM.....