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2004 chevy trailblazer_ls_ext
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Discussion Starter · #1 ·
On a 2004 Trailblazer, which transmission line into the radiator do you disconnect for a fluid flush. Is it the line on the right (passenger) side or the left (driver side). Additionally, what size hose will I need for the flush, 3/8 or 1/2 inch inner diameter?
 

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2004 chevy trailblazer_ls
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Passenger side, 3/8 hose. Put the hose in a bucket, start it, run till it gurgles.
 
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