WTF Is That Noise...The Motor's Off And I'm Not Moving?? My 3 is Haunted...

[Desert Dan]

It may have something to do with the power brake system on the master cylinder?

It uses an electrical boost system. I haven't really looked into how it works.

[HUMTECH]

Best guess, just what desert dan said, the abs system runs self diagnostics which are quite audible(apparently) have not heard it myself. Also not sure if they will run in a key off situation. If i come across anything tomorrow i will pass it on to ya. I checked for service bulletins and pi's and found nothing. May want to check for any chassis dtc's.

[Viet Nam Vette]

Originally Posted by HUMTECH

Best guess, just what desert dan said, the abs system runs self diagnostics which are quite audible(apparently) have not heard it myself. Also not sure if they will run in a key off situation. If i come across anything tomorrow i will pass it on to ya. I checked for service bulletins and pi's and found nothing. May want to check for any chassis dtc's.

Thanks Dude...

It may well be some sort of diagnostics thingy. There is a module next to the MC where the sound is coming from. But it takes a while after the hood is up before ut starts clicking.

Pop your hood and wait a few min..it should start. Their are no codes shown either on the dash or on my after market "Scan Gauge" mounted on my steering column.

No big deal..just wondered WTF it's doing.... "I Robot"

[HUMTECH]

Well i dont have one but next time i do have one in the shop i will def check it out and see if it happens. May be normal or may be posessed