Overheating

2004 CHEVROLET TRAILBLAZER
110,000 MILES • 4.2L • V6 • 4WD • AUTOMATIC
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TRAILBLAZER4WD
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  • 1 POST
I recently replaced my water pump and thermostat and now I’m exceeding over 210* F. Any suggestions what’s causing this?
Feb 22, 2019 at 9:22 PM
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SCGRANTURISMO
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 4,897 POSTS
Hello,

This could be a problem with an air pocket. Air pockets will keep the coolant from circulating, creating hot spots. I have included directions for coolant filling in the diagrams below. Get back to us with what you find out.

Thanks,
Alex
2CarPros
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Feb 22, 2019 at 9:44 PM
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