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Showing results for tags 'ok cold'.
Well I"ve read quite a few post about power steering problems and fixes. As a former gm mechanic I'm a little frustrated to say the least. I've never been test and guess and hate to start now. Plus at my age don't really want to perform either repair. Pump or Gear. So lets start. The steering has been a little strange since new (2004 GMC sierra crew 5.3L gas) noisy grumpy at times when turning, but not a power steering whine. All of the sudden power steering starts whining and groaning like crazy and almost no power steering , kind of comes and goes between real bad and no assist at all. Works better at high rpm, but still very noisy and fluid is aerated/bubbles. Let set and start cold, no noise and steering works for a few seconds then gets air, goes noisy and back to where I started. Flushed the system and if anything worse now. Pumped fluid out like crazy when I flushed it. Could I have a bad cooler or air getting into system? No Leaks. I was going to hook up my old ps tester, but can't find adapters for the thing to metric. Any suggestions would be greatly appreciated.