searched the posts and couldn't find this. my coworker's 99 rodeo has a loud buzzing noise coming from the abs(?) unit on the pass side fender under the hood. it's some kind of distributing unit with a bunch (6-8) of steel lines coming out of it.the engine was off and it was still vibrating and buzzing. it's kind of hot too. abs light has been on and off for a few months but this is the first time he's had this prob. anyone care to venture a la-z-boy diagnosis?

97Rodeo Rancho9ks/Aisins/3.2L SOHC/M1 only
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Proper Prior Planning Prevents P*ss-Poor Performance--Maj. R.T.Spooner USMC(Ret.)