Overheating after engine froze due to a weather freeze

2005 GMC SIERRA
120,000 MILES • 3.1L • V8 • AUTOMATIC
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AIDA RAMOS
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  • 1 POST
With a freeze my car's engine froze. i got it to thaw heated change water pump still heats up could it be the radiator? Overheating was caused by a weather freeze.
Dec 25, 2016 at 7:40 AM
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STEVE W.
  • ✓Experienced Mechanic
  • 15,381 POSTS
If it thawed out the problem is not likely to be the radiator, when those freeze they break and leak. Rent a pressure tester and see if the cooling system will hold pressure. If it holds pressure the issue could be a failed thermostat that is not opening.
If it fails to hold pressure it is something like a head gasket.
Dec 25, 2016 at 8:46 AM
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