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Radiator petcock on 2003 Trailblazer


markhodges8
03-10-2010, 08:11 AM
Is there a petcock or drain on the radiator of a 2003 Trailblazer? If so, where is it located at? Also, is there an air bleed hose or valve to purge the air after refilling the radiator with coolant?
MT-2500
03-10-2010, 03:24 PM
Is there a petcock or drain on the radiator of a 2003 Trailblazer? If so, where is it located at? Also, is there an air bleed hose or valve to purge the air after refilling the radiator with coolant?

Drain petcocks are a pain and may leak or break if used.

I always drain at hoses and if air locked system pull heater hose or hose on upper part of intake and bleed air.
maxwedge
03-11-2010, 09:34 AM
Petcock is at the lower lt corner of the rad, you must get under neath to access.

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