So I realized today that if I am in nuetral and rev it up past 3000 RPM the speedometer needle begans to climp as well up to like 10 MPH!!! Anyone have any idea? Perhaps I need a new Vehicle Speed Sensor? Any help would be great! Thanks in advance!!!

 

Please I have been told that all GM's and chevy's do this is that true???

 

Mine did it when I had a ground problem if that helps. Mine doesn't do it anymore, well hell, right now it wont start without the heads on...

 

i have been checking other vehicles at a chevy lot and they all do it...that's why I am so perplexed, car in nuetral rev it up there and the speedo creeps to 5 mph

 

I couldnt tell you then. Mine did it in park and in neutral. After I fixed the ground problem it doesn't do it in either. I remember my parents had a 2002 Monte Carlo SS and it did it, but it also wouldn't rev over 3k or something like that in park or in neutral. That has to be the slowest SS on record, but the damn thing rode nice.

On a side note, I checked out your photos about the heads and cam swap, NICE car. I might be asking you some questions here shortly. I have my heads off now and I'm going to take everything else off to get the cam out friday.

 

Thanks for the compliment on the car. What was the ground problem? I would love to see if that fixes it!

 

It was for my toggle switch for my nitrous. I used one of those splice connectors and somehow it wasn't working correctly. So i took it off and soldered it in and no more problems. One day I went to start my car and it did nothing. I was pissed. So the next day I popped the hood and was looking around and jiggled the toggle switch wire and the battery made a clicking noise. I turned the key and started right up. Wierd **** what a ground can do.

 

I don't have much wired in other then the line lockers and shift light and I checked both of those they are just fine in terms of ground wire. I am tempted to ground out the VSS and see what happens...anyone else got any ideas?

 

you've got a bad ground somewhere, my old winter beater did that I never fixed it though as I got rid of it the following spring

 

any clues the only thing like I said are the line lockers and the shift light? where would you ground those out currently they are grounded out in my center console near where the air bag sensors mounts to.

 

anyone know where the VSS is located? which plug on the tranny?

 

please help to the post above question is it this one?

 

Yes^^^

 

thank you so when I unplugged this there was no interference meaning tach revved up fine and the speedo didn't climb any ideas???

 

anyone???????

 

How's your charging system? Mine did some funny **** when the speedo moved with just revving it. If your not having any problems then I wouldn't worry about it. Has it just started recently, have you just now noticed, or do you recall revving in nuetral and it not moving?

 

nope the entire time I have owned it speedo has revved up and like I said every truck, cuv and sedan at my dealership does the same thing

 

Mine does it too. My 05 Colorado did it and so does our 04 trailblazer. I doubt all of them have bad grounds.

 

yeah every chevy I have checked so far does other then 1, so 1 out of like 12.

 

I wouldn't worry about it then. I guess I have one out of the 12 then.