1989 GMC S15 REPLACING RADIATOR DRAIN COCK

  • Tiny
  • Dakingpin
  • 1989 GMC S15

Engine Cooling problem
1989 GMC S15 6 cyl Two Wheel Drive Automatic 200000 miles

The plastic drain petcock broke off while flushing the radiator. How do you remove the rest of the old drain petcock so I can install the new one.

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Tuesday, June 24th, 2008 AT 6:05 PM

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  • Tiny
  • merlin2021
  • Expert
  • 17,589 posts

If you have to, remove the radiator, and unscrew the remainder of the old one, then install the new one.

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Tuesday, June 24th, 2008 AT 6:10 PM
  • Tiny
  • KHLow2008
  • Expert
  • 41,997 posts

Hi Dakingpin,

The wing nut is made of plastic so use a sharp pointed object to stick into the edge and slowly try to unscrew it off, provided space is available, if not you have to remove the radiator first.

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Friday, June 27th, 2008 AT 8:03 AM

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