SSpeckerwood
New member
Post some pics of it please
Add Cruise Control?
- Thread starter buckeyefans
- Start date
The aftermarket system is plug and play.The aftermarket module is wired into the GMLAN serial data network at the DLC under drivers knee bolster panel.The two inputs to the module are the cruise switch and the accelerator pedal sensor. It is either communicating with the ECM and/or BCM.Either way the module is communicating on the GMLAN network to control the cruise.
If the factory wired the Sonic for cruise to be added later...there is a small seven pin connector where the factory switch mounts.Only 4 pins are used (1-3-6-7) out of the seven cavities.I have not had time to inspect mine.I have access to other Sonics' with cruise.If the connector is there I will try a switch.I will post my findings soon.
If the factory wired the Sonic for cruise to be added later...there is a small seven pin connector where the factory switch mounts.Only 4 pins are used (1-3-6-7) out of the seven cavities.I have not had time to inspect mine.I have access to other Sonics' with cruise.If the connector is there I will try a switch.I will post my findings soon.
Last edited:
SSpeckerwood
New member
Right on. Thank you much
I verified today there is NOT a connector for the cruise switch....but I did go one step further and found the BCM circuits required for switch operation are present on the backside (supply to switch) of the Air bag clockspring/coil connector.The only circuits present on the front of the clockspring are the 2 for the horn.The really good news is I also verifed there is supply voltage present on the cruise switch circuit at the back of the clockspring from the BCM. Also there is a cruise indicator lamp in the cluster as well.I did some research on the parts...all the necessary parts including cruise switch harness are available.I am going to swap the necessary parts from a Sonic w/ cruise and post my findings....it will probably take a few days.
Last edited:
SSpeckerwood
New member
Right on. Thanks
laborsmith
New member
SonicA4, that was more than one extra step, but your results are definitely worth the effort.
Laborsmith
Laborsmith
The experiment with the Sonic cruise parts did NOT work.Although the BCM hardware supplies the 12 volt reference for the switch....the cruise control operating software is not in the BCM. I have a dealer contact that spoke with the GM.....the cruise add on is currently not supported and the operating software is not available at this time.The only supported add on is the fog lamp kit.
The GM parts catalog only shows 1 BCM part number for all Sonics.A new module comes blank and has to be programmed with operating software that is VIN specific.Also....new networking technology does not allow for module swapping with other vehicles.
It appears the aftermarket system takes place of the BCM and communicates directly with the ECM through the GMLAN.
It looks like the aftermarket cruise is the only option for now.
The GM parts catalog only shows 1 BCM part number for all Sonics.A new module comes blank and has to be programmed with operating software that is VIN specific.Also....new networking technology does not allow for module swapping with other vehicles.
It appears the aftermarket system takes place of the BCM and communicates directly with the ECM through the GMLAN.
It looks like the aftermarket cruise is the only option for now.
SSpeckerwood
New member
sonicboom08
New member
IT would be nice if it was possible to install cruise control. I didn't realize how much I miss it on long trips. Is it even possible to install it ?
SSpeckerwood
New member
Anything is possible, just figuring out the how is the hard part.
(sspeckerwood, 2012)
Two words from a Buckeye fan here.... Muck Fichigan...
Now on to our regularly scheduled programme... I'd order the LTZ wheel just for the leather. Is it possible that that would work instead of just ordering the thumb buttons?
it could be very easy to install cruise control i'm a tech at gm and was looking at the schematics and it would very easy just a question of is it prewired or are you going to have to run the wires through the sir coil to the bcm sometimes the put the connectos their just in case but i havent had many sonic air bags off to check i own a sonic ls i talked to the parts man and he said their is only one bcm for all the sonic trims so if gm will let you program it, it would be very easy buy the switch and bezel remove the airbag and trim cover and install may have to wire to bcm or may not but it is very possible to do it oe style
SSpeckerwood
New member
welcome. i've tried it. if you can find a way to do it at a resonable cost, please post it.
CoHPhasor
Active member
been doing some research you would have to replace the clock spring there are 2 of them a 6 circut and a 14 circut spring and thats about 75 + the 30 or 40 in switches and then just runing the lighting circuts and control circuts so its possible but probaly run about 200 dollars in parts and programing if needed
SSpeckerwood
New member
Huh?
I think what he is trying to say is that the car is pre-wired for cruise, the wires go up to the clockspring in the steering wheel. You will need to buy a different clockspring with the correct number of connectors which should run you about $75. Then you have to buy the switches for another $30-$40...Then the cost of reflashing the BCM....
