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1991 GMC C3500 Transmission cooling lines

Tiny
LBETHARDS
  • MEMBER
  • 1991 GMC C3500
  • V8
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I need to replace the radiator, but cannot budge the threaded cooling line connectors going into the radiator. Can I cut out a section of the steel tubing and use rubber tubing and clamps after replacing the radiator? Or are those lines under high pressure?
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Tuesday, June 24th, 2008 AT 10:10 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
There is a wrench called "flare nut" go and get it and then slap it hard with the palm of your hand. Mechanics do it everyday! If a new radiator is going in, don't be afraid to carefully heat the nut. Quickly!
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Tuesday, June 24th, 2008 AT 5:55 PM

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