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The block heater is standard on most Trailblazers. The cord is attached under a flap against the battery.
The block heater cord is on the Engine Block Heater on the 2007 Chevy Optra.
To normally install a block heater you must remove an expanstion/ freeze plug in tighten in the block heater. The 6 cylinder 4.2L engine unfortunately does not appear to have any such plugs. The V8 engine should have a screw in style block heater installed in the left front of the engine block just below the cylinder head.
Do you mean where on a car is a block heater install or who do you take the car to to install?
Drain coolant from radiator and engine block Remove passenger's side rear freeze plug and replace with block heater kit
It's unfortunate that you posted your question on answers.com, likely the last place you'll find an actual answer ...
Remove and engine block expansion plug. Insert the block heater. Seal the block heater. Attached the wiring harness to the block heater.
where is the engin block heater on a 2007 Ion
That particular make and model of car does not have a block heater!
Install block heater in lower rad hose .
Begin by training the water from your 2003 engine block. Remove the wiring harness from the block heater. Remove the block heater retaining bolts. The block heater will come out. Reverse the process to install your new block heater.
drain coolant from radiator, remove one of the frost plugs in engine block, install block heater in place of frost plug, refill radiator with coolant.