Hi all,

This is very weird. A strange noise occurs intermittently. It sort of sounds like a pulley slipping on a steel shaft briefly followed by a brief rattling noise and may or may not blow out fuse number 14 (A/C Pressure switch, backup lamp and daytime running lights, redundant speed control heated pcv, ABS, Reverse park aid, EC Mirror), then the brake light and the ABS light is displayed and the cruise control quits working. It does not ALWAYS blow out the fuse as I discovered yesterday. The first time it happened (about three months ago) I was doing 75 when it happened and was unable to figure out what it was. Yesterday it happened and I new it was fuse number 14. I replaced the fuse and it happened again within 3 minutes. It may be when I turn the wheel to the left. The first time it happened I was changing lanes, yesterday when it happened I was on a ramp turning to the left. In the driveway it happened as a backed up and turned the wheel to the left. I cannot identify where the noise comes from. After the noise and the blown fuse the truck runs just fine and I can continue to drive.

Help me Obe Wan Kanobe, you're my only hope.

 

Wow, really wish I could help but ive never heard of anything likt that. But atleast its blowing a fuse so you essentially have a cel. Figure out everything the fuse runs and trace it to the mechanical parts and it might give you your answer

 

I would observe the operation of the AC compressor clutch/AC system operation.

 

Sounds like an issue with the A/C compressor. Is the A/C on or off when this happens?

 

It happened in both modes.

 

Make sure when testing in the off position you aren't using the defrost.