Block heater, how is it used? - Chevy Colorado & GMC Canyon
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post #1 of 2 (permalink) Old 01-12-2017, 02:34 PM Thread Starter
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Join Date: Jun 2016
Location: Southern Michigan
Posts: 19
Block heater, how is it used?

2007 Colorado, LS, 2.9 engine.
I had my mechanic instal an "original equipment" Block Heater #12587380. It is the style that is held in with a clip (as opposed to threaded into a freeze plug orifice), and does not make contact with the coolant...I surmise it just heats the metal of the block.
My question is: How is it intended to be used...can it be plugged in overnight without any problems, or is it intended to be plugged in within an hour or two of an attempted start?
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post #2 of 2 (permalink) Old 01-12-2017, 02:43 PM
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Location: Edmonton, Alberta Canada
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You can have it plugged in overnight no problem,. To save a bit of electricity, I personally have mine on a timer to start about 3 hours before I leave for work in the Am.

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