Not sure which forum this should be in, but the cruise control module is from a 93 LT1, and a 98 LS1 doesn't send a signal to the cruise control module, so I guess this place is right? If not, please move it to the right place...

I'm trying to install cruise control in my 1997 Camaro (it has a 98 LS1 in it). I know that the 98 PCM does not send a signal to the Cruise Control Module (CCM), so I can't use a CCM from any of the V6 Camaros. I picked up a CCM from a 93 LT1 in a junkyard.

Problem is, it's not working... I've checked the wiring at the plug that goes into the CCM and it seems to be getting the appropriate signals (CRUISE ON, ACCEL, etc...) at the appropriate time. The way that I wired it up is listed below if there are any questions about it.

A 12V when Cruise Slider switch is set to ON
B 12V when "SET COAST" is depressed
C 12V when RESUME/ACCEL slider switch is used
D Normally 12V from brake switch (0V when brake is depressed)
E Ground

F 12V when ignition is in RUN position.
---I spliced into the A/C Cruise fuse in the under hood electrical center
G Normally 0V from brake input (12V when brake is depressed)
---I spliced into the StopLamp circuit, between the StopLamp switch and the brake lights.
H "Cruise Inhibit from PCM" Was not used
J "Cruise engaged status to PCM" Was not used
K VSS signal from the PCM to Gauge Cluster
---I spliced into the circuit containing the VSS after it branches off from the gauge cluster.



I read that the VSS signal from the PCM is supposed to be a high of 4-5V, and a low of near ground. I jacked the rear of the car up to test the voltage, and around 50-60mph I get a high of about 5.35V; could this be an issue?? Thank you in advance for any help/suggestions

 

It seems you know more about this than I do, so this is just an idea. Is your car an auto or manual? I know the 98's are alittle different, but when I swapped over to a 6 speed I had to add a pin for the clutch sensor at the pcm. I tried using just the brake sensor wire for both pedals and the cruise wouldnt work. That was all it took for me.

 

Thanks Chevyssoccer. I did something similar to that to wire up the brake switches.

Today I found the 2 problems with it: 1) the electromagnet inside the cruise control was extremely corroded on the contacts 2) The cruise control cable covering was corroded and had cracked off, exposing the rubber covering and allowing the cable to get "kinked."
I cleaned up the electromagnet and put some more rubber hose over the cable to straighten it out, and now it works!!

Thanks help man.