2000 Grand Am SE

Printed From: the12volt.com
Forum Name: Cruise Controls
Forum Discription: Cruise Control Settings, Tach Signal, VSS PPM(Vehicle Speed Signal Pulses Per Mile), Vacuum, Brake, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=4477
Printed Date: May 14, 2024 at 6:19 AM

Topic: 2000 Grand Am SE

Posted By: abright52
Subject: 2000 Grand Am SE
Date Posted: October 15, 2002 at 12:17 AM

Does anyone know what color the Cruise Control wires are on a 2000 Grand Am and where they can be best accessed? I am having trouble with the cruise and I want to bypass the switch to see if that is the problem.

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Replies:

Posted By: PLAYER69
Date Posted: October 27, 2002 at 3:21 PM

What type of problems?

Posted By: abright52
Date Posted: October 27, 2002 at 5:10 PM

Well, it doesn't work. The lights will light up (as in to turn the cruise on), but when you try to set a speed, it will not work. So, I wanted to try to see if the switch is the problem. I have already tried another module, that is not the problem.

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Posted By: PLAYER69
Date Posted: October 27, 2002 at 5:37 PM

I will look it up and get back to you. Grey, grey/black, blue, and I can't remember the fourth color. This might be wrong as this is just off the top of my head.

Posted By: abright52
Date Posted: October 27, 2002 at 6:03 PM

Where is the best place to find these wires and which controls what?

Thanks

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Posted By: PLAYER69
Date Posted: October 28, 2002 at 11:21 AM

Here it goes. The system is pretty simple. If you want email me at player69dss@hotmail.com with your fax # and I can send you the schematic for it.

At the stepper motor under the hood (module that pulls on throttle) these are the colors and how to test them.

Grey - On - When the cruise is in on position and key is on should be +12v
Dk Blue - set - When you push set button this should flash +12v
Gry/Blk - resume - when you hold resume this should be +12v
ppl - Brake - when you push the brake this should be +12v
Black - Ground -
Brown - Ignition - when key is on this should be 12v
lt blue/blk - dash light - when cruise is set this should be +12v (not necessary for cruise to function.
GREEN / WHITE - vss - check for ac current

If all these test good, take the Dark green wire, cut it and hook the stepper motor side to ground. This is a cruise disable wire. If the PCM detects any reason that the cruise should be disabled, it will not supply ground to this wire and the cruise will not engage. I have seen the pcm malfuntion and cause the cruise not to work. The solution was to tie this to ground or replace pcm. The customer chose the cheap route and we just bypassed this. To date no problems with it.

I still think it sounds like a bad stepper motor so if it was a used one you tried, see if you can get your hands on a new one. It is very common for the gears to strip inside. Unfortunatly the stepper motors are quite expensive to replace.

Let me know if you have any troubles, I have quite a bit of experience with cruise controls.

Posted By: abright52
Date Posted: October 28, 2002 at 2:24 PM

I didn't try a different stepper motor, just the cruise module on the passenger side of the engine compartment. I will give that a try and see if that helps.

Thanks!

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Posted By: PLAYER69
Date Posted: October 28, 2002 at 4:40 PM

There is no seperate cruise module. It is built into the stepper motor. Did the piece you change hook up to the throttle?