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1989 GMC S15 Replacing radiator drain cock

Tiny
DAKINGPIN
  • MEMBER
  • 1989 GMC S15
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 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.
Tuesday, June 24th, 2008 AT 6:05 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 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
  • MECHANIC
  • 41,814 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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