Installing Cruise Control w/DBW
Thanks!
Larry
Heres the vette diagram...

Long story short, it appears that the LS2 cruise is done over the CAN network.
Here is a thread sdiscussing it...
https://ls1tech.com/forums/conversio...-ggto-ls2.html
Mark
https://ls1tech.com/forums/conversio...-ggto-ls2.html

The SSR has the wiring go straight to the PCM, instead of having it go through the CAN network... Now weather it will work without the SSR tune, who knows, but maybe one of the tuners could make a custom tune if that is the case... Anyway there is the wiring diagram with the inputs you would need.
It looks like for the inputs to the PCM for the on/set/accel swtich, you just provide one constant 12v connection for on, then apply momentary 12v when you want set or accel.
Mark
Just needs 12V+ with brakes on & off (2 wires, I get the switch from the donor s10 brake pedal) speedometer wire, on/off switch on dash & a single momentary switch to engage the cruise. I don't use the resume/accel feature. Push the button & she goes into cruise, hold the button & it will coast until you release.
there are several ways they hook into the throttle body, you may have to slightly modify the bracket. I have one on an ls6 intake & the other is on a truck intake.
Below is parenthesis is my simplified Appalachian American way I did it.
Pin. Use
A ........ Cruise "ON/OFF" input from switch (on/off switch on dash 12V+)
B ........ Set/Coast input from switch (momentary switch on dash 12V+)
C ........ Resume/Accel input from switch (didn't use)
D ........ Normally Hot 12v from brake/clutch switch (12V+ with brake off)
E ........ Ground (grounded to chassis)
F ........ Hot in run 12v (from battery)
G ........ Normally 0v brake input (12V+ with brake on)
H ........ Cruise inhibit signal pcm control (using older s10 modules I did not need this)
J ......... Cruise engaged status to pcm (not needed on older s10 modules)
K ........ VSS from pcm/feed to cluster (tapped into wire from pcm to speedo)
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Below is parenthesis is my simplified Appalachian American way I did it.
Pin. Use
A ........ Cruise "ON/OFF" input from switch (on/off switch on dash 12V+)
B ........ Set/Coast input from switch (momentary switch on dash 12V+)
C ........ Resume/Accel input from switch (didn't use)
D ........ Normally Hot 12v from brake/clutch switch (12V+ with brake off)
E ........ Ground (grounded to chassis)
F ........ Hot in run 12v (from battery)
G ........ Normally 0v brake input (12V+ with brake on)
H ........ Cruise inhibit signal pcm control (using older s10 modules I did not need this)
J ......... Cruise engaged status to pcm (not needed on older s10 modules)
K ........ VSS from pcm/feed to cluster (tapped into wire from pcm to speedo)
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Dave
http://67-72chevytrucks.com/vboard/s...d.php?t=324015
DBW cruise info;
http://67-72chevytrucks.com/vboard/s...d.php?t=300335
Last edited by usc2001gc; Feb 7, 2011 at 08:47 PM. Reason: additional info.
C1 43- Clutch Position, Normally Open
C1 46- Brake Switch, Normally Closed
C1 32- Brake Switch, Normally Open
C1 17- Cruise Control On Switch Signal, Normally Closed (when cc switch is ON)
C1 27- CC Set/Coast Switch Signal, Normally Open
C1 33- CC Accel/Resume Switch Signal, Normally Open
Everything is receiving 12 Volts
here is a quote from a popular EFI site.
•Used Gen IV ECMs (E40, E38, and E67) can be pulled from non-V8 vehicles, but require a base GM calibration for the vehicle/engine type you are working with. A "full flash" with EFILive, HP Tuners, etc. will not replace all calibration segments. In other words, you can pull a used E38 from a 2008 V6 Impala, perform a full flash with a 2008 Corvette calibration, and electronic throttle will not work.
This is why I was told to use the Trailblazer computer. With this computer it should be as easy as paul says it is a matter of finding the proper cruise lever and adding the proper 12v to the pins in the computer.







