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Where is the radiator cap on a 2003 chevy blazer?

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  • Cars & Trucks Master
  • 9,845 Answers

It's on the radiator itself.

Posted on Mar 29, 2015

  • Karla Cordova
    Karla Cordova Mar 30, 2015

    I realize that the radiator cap is on the radiator . . . I guess my question should have been "Where is the radiator? "

  • Lawrence Oravetz Mar 30, 2015

    Behind the grille in front of the cooling fan. There are 2 large diameter hoses going to the engine that connect to the top and bottom of it.

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gypsycat00
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SOURCE: Where is the radiator drain on a 2003 Chevy blazer

There is a draincock on the bottom of your radiator (probably hidden by the splash gaurd). You can either take the splash guard from the vehicle to drain the radiator, or disconnect the lower radiator hose. Both methods will allow you to drain the radiator.

Posted on Jul 03, 2009

  • 3640 Answers

SOURCE: Antifreeze is leaking from around my radiator cap

more than likely it is a bad radiator cap. the pressure seal is leaking on cap.

Posted on Nov 05, 2010

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A diagram of the flushing of a radiator and block of a chevrolet blazer LS 2000


Theres no such thing as a diagram, here are the draining instructions, hope this helps...
  • 1-Place a large drain pan beneath the radiator drain plug. The drain plug is located on the passenger side at the very bottom of the radiator on the engine side.

  • 2-Make sure the engine is cool. Open the hood of the truck and remove the radiator cap.
  • 3-Loosen the drain plug. On the 2000 Blazer, the drain plug is a wing-nut type of plug. Twist it with your fingers until the coolant begins to drain.

  • *To flush the block, once you have drained the radiator, run the engine for a bit untill the temp gauge goes up to normal, then the coolant will have been evacuated from the block. DO NOT leave the engine on, once it reaches normal temp, (this will happen quick) turn off right away, otherwise you'll be forking out a few hundred $$$ to fix the worped heads.
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