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
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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
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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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