underneath the alternator,
location for 2003 chevy trailblazer coolant temperature sensor
seriously? it tells you what temperature you engine coolant/antifreeze is. that is how your gauge on the dash knows what your temperature is at.
REMOVE ALTERNATOR FROM DRIVERS SIDE OF ENGINE BLOCK.
The 2003 Trailblazer speed sensor is mounted on the transmission. It is on the passenger side of the output end.
The coolant temp sensor on a 2003 Chevy S10 V6 is located on the front of the intake manifold. To replace simply unscrew the old sensor and screw on the new one.
There are two. One on the exhaust manifold and one just after the Cat. www.trailvoy.com Trailblazer enthusiasts website!
The coolant temp sensor will be located very close to the thermostst housing.
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