Can anyone tell me where the VSS (speed sensor) wire is located inside the HHR? (hopefully it's somewhere near the dash)

Maybe wire color and pin number, etc....

Thanks in advance.

 

Not located in the dash, but under hood going into the ECM harness. Why are you looking for the VSS wires, if you are thinking about the old snip the wires to disable the speed limiter trick, it won't work. I'd be very hesitant to do anything with them as you can set yourself up for some issues with the ECM.

 

I need to send a signal to the overhead console. It has several other functions, and the wiring harness needs a VSS feed and a serial bus feed. The serial one I have covered....but need a VSS.

 

Terminals 18 & 19 on the connector going into the ECM by the looks of the wiring diagram, you're looking for the yellow and purple wires. The yellow wire is the VSS high signal, the purple wire is the VSS low signal wire. Sorry if my earlier reply seemed snarky, I'm just concerned when folks start tearing into the wiring. Please accept my apology, this head cold is doing me in.

 

No problem. I didn't even take it that way. I took it that you were trying to keep me from doing something that you already KNEW was going to cause problems.

Can I ask....what is the difference between the "High" and "low" signal?

If it is too complicated to connect to my console, I may just skip that part and only use the Comp/Temp features.

 

Basically the high/low signals from the VSS are necessitated by the way an integrated circuit functions. In order to be stable in operation an I/C needs its inputs locked and not left floating without values. The two signals from the VSS are used one at a time but the signal not being used is still supplied with a value above null in order to keep the circuit electrically balanced. The ECM looks for both the high/low signals as part of the input needed to monitor vehicle speed and uses that data to control fuel flow, etc. These signals are also fed to the BCM in order to generate the date used to drive the instrument cluster. Sorry you asked huh?