ECM fuse / s - reset CPU ????

[Darwin6.5]

I am having trouble with my cruise control switching itself off after a short period. Fisrt use for the day is fine but further applications are unpredictable.

I have some advice that if I take out the ECM fuse for 30 sec or so then replace it this will rest the CPU and maybe fix the problem.

Do I do this while the vehicle ignition is switched on/off?

Is the fuse next to the steering colum and if so what does it look like?

The vehicle is a 98 6.5TD Suburban.

Any idea's would be appreciated.

Cheers

[GMC Hauler]

Could your brake switch be operating intermittently? That will turn the cruise off. They have been known to go bad from time to time.

[BobND]

Also, a trailer wiring connector full of dirt, moisture, and corrosion can cause this.

[JohnC]

FSD problems can also cause the cruise to disconnect. If you can get a scan tool, look at solenoid closure time while it's acting up. If the time is erratic, the cruise will kick out.

[Darwin6.5]

That's food for thought, my gut feeling was that it may be something to do with the brake swith or similar. I will start there and work my way along.

I don't have a scan tool or access to one. Would this item be a generic GM tool or is it specifically for the 6.5?

Thanks for the starting point.