remove and replace engine coolant temperature(ect)/chevy 2004 trailblazer
The thermostat is located below the alternator on the drivers side. The coolant sensor is right above the thermostat.
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AnswerThe thermostat comes in a housing that bolts directly to the motor, and is located on the driver's side of the motor, about 1/2 way from the top, & towards the front of the engine. To remove/replace it you need a socket wrench & a 3 to 6 inch extension. You will have to remove the alternator and serpentine belt to get to it. This is where the thermostat is located on the trailblazer for years 2002 to 2004.
It is located on the left side of the engine (6cyl) next to the thermostat, in order to replace both thermostat or sensor the alternator needs to be removed
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replace the starter
Remove The Altenator and where the top radiator hose is attached to the block take the two bolts out. The whole piece that the hose go's on is the thermostat auto zone is cheaper.
I had mine replaced and the cost of the thermostat and housing was $48.67 without the cost of labor.